{"id":2447,"date":"2023-02-07T09:05:02","date_gmt":"2023-02-07T02:05:02","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=2447"},"modified":"2023-11-24T15:02:46","modified_gmt":"2023-11-24T08:02:46","slug":"vietnam-journal-of-forest-science-number-3-2016-2","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2023\/02\/vietnam-journal-of-forest-science-number-3-2016-2\/","title":{"rendered":"Vietnam Journal of Forest Science Number 6-2022"},"content":{"rendered":"

\"\"<\/a><\/p>\n

<\/a><\/a><\/a>T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 <\/strong>6<\/strong> – <\/strong>20<\/strong>2<\/strong>2<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
1.<\/td>\nNghi\u00ean c\u1ee9u ch\u1ecdn l\u1ecdc d\u00f2ng
\nv\u00f4 t\u00ednh Keo l\u00e1 tr\u00e0m sinh tr\u01b0\u1edfng nhanh cho v\u00f9ng
\n\u0110\u00f4ng Nam B\u1ed9<\/td>\n		Selection of fast growing Acacia auriculiformis<\/em> for planting in the Southeast Vietnam<\/td>\nNguy\u1ec5n \u0110\u1ee9c Ki\u00ean
\nNg\u00f4 V\u0103n Ch\u00ednh
\nD\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n<\/em><\/td>\n		5<\/td>\n<\/tr>\n
2.<\/td>\nNghi\u00ean c\u1ee9u \u0111a d\u1ea1ng di
\ntruy\u1ec1n c\u00e1c bi\u1ebfn ch\u1ee7ng
\nTh\u00f4ng caribe \u0111\u01b0\u1ee3c tr\u1ed3ng
\nt\u1ea1i Vi\u1ec7t Nam b\u1eb1ng
\nch\u1ec9 th\u1ecb ISSR<\/td>\n		Evaluation of the genetic diversity and population structure of Pinus caribaea<\/em> in Vietnam<\/td>\nTr\u1ea7n \u0110\u1ee9c V\u01b0\u1ee3ng
\nNguy\u1ec5n \u0110\u1ee9c Ki\u00ean
\nNguy\u1ec5n Th\u1ecb Huy\u1ec1n
\nH\u00e0 Th\u1ecb Huy\u1ec1n Ng\u1ecdc
\nL\u00ea Th\u1ecb Th\u1ee7y
\nNguy\u1ec5n Th\u1ecb Vi\u1ec7t H\u00e0
\nTr\u1ea7n Th\u1ecb Thu H\u00e0
\nL\u00ea S\u01a1n<\/em><\/td>\n		13<\/td>\n<\/tr>\n
3.<\/td>\nNghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng
\nc\u00e2y S\u01a1n tra (Docynia
\nindica<\/em> Wall.) b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p t\u1ea1i v\u00f9ng T\u00e2y B\u1eafc<\/td>\n		Study on propagation of Docynia indica<\/em> Wall. by grafting in Northwest region<\/td>\nH\u00e0 V\u0103n Ti\u1ec7p
\nL\u00ea Anh Thanh
\nNguy\u1ec5n V\u0103n H\u00f9ng
\nNguy\u1ec5n H\u01b0\u01a1ng Ly
\nHo\u00e0ng Di\u1ec7p Linh
\nPh\u1ea1m \u0110\u1ee9c S\u01a1n
\nL\u00f2 Th\u1ecb Ki\u1ec1u
\n\u0110inh C\u00f4ng Tr\u00ecnh<\/em><\/td>\n		23<\/td>\n<\/tr>\n
4.<\/td>\nNghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng c\u00e2y M\u1eadt nh\u00e2n (Eurycoma longifolia <\/em>Jack) b\u1eb1ng gi\u00e2m hom<\/td>\nStudying techniques for breeding Eurycoma longifolia <\/em>Jack by cuttings<\/td>\nTr\u1ea7n Th\u1ecb Th\u00fay H\u1eb1ng
\nPh\u1ea1m Ti\u1ebfn B\u1eb1ng
\nV\u00f5 \u0110\u1ea1i H\u1ea3i<\/em><\/td>\n		32<\/td>\n<\/tr>\n
5.<\/td>\nNghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng
\nTr\u00e0m l\u00e1 d\u00e0i (Melaleuca leucadendra<\/em> L.) b\u1eb1ng
\nph\u01b0\u01a1ng ph\u00e1p nu\u00f4i c\u1ea5y m\u00f4
\nt\u1ebf b\u00e0o<\/td>\n		In vitro<\/em> micropropagation for Melaleuca leucadendra<\/em> L.<\/td>\nPh\u1ea1m Th\u1ecb M\u1eadn
\nV\u0169 \u0110\u00ecnh H\u01b0\u1edfng
\nNguy\u1ec5n Xu\u00e2n H\u1ea3i
\nKi\u1ec1u M\u1ea1nh H\u00e0
\nTr\u01b0\u01a1ng Th\u1ecb Th\u00f9y Trang
\nNguy\u1ec5n Th\u1ecb Linh
\nV\u0169 Th\u1ecb Thu Thanh
\nNinh V\u0103n Tu\u1ea5n<\/em><\/td>\n		41<\/td>\n<\/tr>\n
6.<\/td>\nNghi\u00ean c\u1ee9u ch\u1ecdn gi\u1ed1ng
\nb\u1ea1ch \u0111\u00e0n lai m\u1edbi sinh
\ntr\u01b0\u1edfng nhanh ph\u1ee5c v\u1ee5
\ntr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn t\u1ea1i
\nThu\u1eadn Ch\u00e2u, S\u01a1n La<\/td>\n		Selection of fast growing eucalyptus hybrid clones for timber plantation in Thuan Chau, Son La<\/td>\nL\u00e3 Tr\u01b0\u1eddng Giang
\nNg\u00f4 V\u0103n Ch\u00ednh
\nNguy\u1ec5n \u0110\u1ee9c Ki\u00ean
\nNguy\u1ec5n H\u1eefu S\u1ef9
\nC\u1ea5n Th\u1ecb Lan
\nD\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n
\n\u0110\u1ed7 Thanh T\u00f9ng
\n\u0110\u1ed7 H\u1eefu S\u01a1n<\/em><\/td>\n		51<\/td>\n<\/tr>\n
7.<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m t\u00e1i sinh lo\u00e0i rau S\u1eafng (Melientha suavis<\/em>)
\nt\u1ea1i C\u00f9 Lao Ch\u00e0m,
\nth\u00e0nh ph\u1ed1 H\u1ed9i An,
\nt\u1ec9nh Qu\u1ea3ng Nam<\/td>\n		Regeneration characteristics of Melientha suavis<\/em> in
\nCu Lao Cham, Hoi An city, Quang Nam province<\/td>\n		Tr\u1ea7n Minh \u0110\u1ee9c
\nTr\u1ea7n Nam Th\u1eafng
\nV\u0103n Th\u1ecb Y\u1ebfn
\nNguy\u1ec5n Ph\u01b0\u01a1ng V\u0103n
\nPh\u1ea1m Th\u00e0nh
\n\u0110inh Di\u1ec5n
\nPh\u1ea1m C\u00f4ng Sanh<\/em><\/td>\n		60<\/td>\n<\/tr>\n
8.<\/td>\nNghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i, v\u1eadt h\u1eadu v\u00e0 h\u1ea1t gi\u1ed1ng
\nBa la m\u00edt (Artocarpus
\nchama<\/em> Buchanan-Hamilton)
\nt\u1ea1i L\u00e0o Cai v\u00e0 Y\u00ean B\u00e1i<\/td>\n		Study on morphological, phenology and seed characteristics of Artocarpus chama<\/em> Buchanan-Hamilton in Yen Bai and Lao Cai provinces<\/td>\nV\u0169 V\u0103n \u0110\u1ecbnh
\nNguy\u1ec5n Qu\u1ed1c Th\u1ed1ng
\nNguy\u1ec5n Th\u1ecb Loan<\/em><\/td>\n		74<\/td>\n<\/tr>\n
9.<\/td>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a ph\u01b0\u01a1ng
\nth\u1ee9c tr\u1ed3ng v\u00e0 t\u1ec9a c\u00e0nh \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a S\u1ed3i ph\u1ea3ng
\nt\u1ea1i L\u00e0o Cai<\/td>\n		Effects of planting practises and pruning on the growth of Castanopsis cerebrina<\/em> species in Lao Cai<\/td>\nPh\u1ea1m V\u0103n Vi\u1ec7n
\nCao V\u0103n L\u1ea1ng
\nHo\u00e0ng V\u0103n Th\u1eafng
\nL\u00ea Th\u1ecb B\u00edch Th\u1ea3o
\nH\u00e0 Huy Nh\u1eadt
\nHo\u00e0ng V\u0103n Th\u00e0nh
\nD\u01b0\u01a1ng Quang Trung<\/em><\/td>\n		82<\/td>\n<\/tr>\n
10.<\/td>\nK\u1ebft qu\u1ea3 tuy\u1ec3n ch\u1ecdn c\u00e2y m\u1eb9 v\u00e0 tr\u1ed3ng th\u1eed nghi\u1ec7m n\u0103m
\nlo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba t\u1ea1i V\u01b0\u1eddn Qu\u1ed1c gia Ba V\u00ec c\u00f3 ti\u1ec1m
\nn\u0103ng tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn<\/td>\n		Results of selection of original ortets and experimental planting of 5 prospective indigenous species for sawlog development in Ba Vi National Park<\/td>\nTr\u1ea7n Minh Tu\u1ea5n
\n\u0110\u1ed7 H\u1eefu Huy
\nChu Ng\u1ecdc Qu\u00e2n
\nPh\u00f9ng Anh T\u00e0i
\nPh\u1ea1m \u0110\u00ecnh S\u00e2m
\nH\u1ed3 Trung L\u01b0\u01a1ng
\nNguy\u1ec5n H\u1eefu Th\u1ecbnh
\nD\u01b0\u01a1ng Quang Trung
\nHo\u00e0ng Thanh S\u01a1n<\/em><\/td>\n		90<\/td>\n<\/tr>\n
11.<\/td>\n\u1ee8ng d\u1ee5ng c\u00f4ng ngh\u1ec7 GIS
\nv\u00e0 FAHP trong quy ho\u1ea1ch ph\u00e1t tri\u1ec3n r\u1eebng tr\u1ed3ng Hu\u1ef7nh (Tarrietia javanica<\/em> Blume) t\u1ea1i t\u1ec9nh Qu\u1ea3ng Tr\u1ecb<\/td>\n		Application of GIS technology and FAHP method in development planning of Tarrietia javanica<\/em> Blume plantation in Quang Tri province<\/td>\nV\u0169 \u0110\u1ee9c B\u00ecnh
\nNguy\u1ec5n V\u0103n L\u1ee3i
\nPh\u1ea1m Xu\u00e2n \u0110\u1ec9nh
\nNguy\u1ec5n Th\u1ecb Th\u1ea3o Trang
\nNguy\u1ec5n Th\u1ecb Thanh Nga
\nNguy\u1ec5n H\u1ea3i Th\u00e0nh
\nL\u00ea C\u00f4ng \u0110\u1ecbnh<\/em><\/td>\n		100<\/td>\n<\/tr>\n
12.<\/td>\nThu h\u1ed3i lignin b\u1eb1ng axit sunphuric t\u1eeb nh\u00e0 m\u00e1y b\u1ed9t gi\u1ea5y sunphat v\u00e0 s\u1eed d\u1ee5ng
\nt\u1ed5ng h\u1ee3p keo Lignin –
\nPhenol – Formadyhyde<\/td>\n		Recovery lignin by aciad sulfile form kraft pulp mill and use for Lignin –
\nPhenol- Formadyhyde adhensive synthesis<\/td>\n		Ho\u00e0ng V\u0103n Phong
\nB\u00f9i Duy Ng\u1ecdc
\n\u0110o\u00e0n Th\u1ecb B\u00edch Ng\u1ecdc
\nHo\u00e0ng Th\u1ecb T\u00e1m
\nPhan Huy Ho\u00e0ng<\/em><\/td>\n		111<\/td>\n<\/tr>\n
13.<\/td>\nNghi\u00ean c\u1ee9u t\u00ednh ch\u1ea5t c\u01a1,
\nv\u1eadt l\u00fd v\u00e0 kh\u1ea3 n\u0103ng gia c\u00f4ng g\u1ed7 D\u1ebb cau (Quercus
\nplatycalyx<\/em> Hickel &
\nA.Camus) ph\u1ee5c v\u1ee5
\nch\u1ebf bi\u1ebfn<\/td>\n		Study on the physical and mechanical properties and machinability of Quercus platycalyx Hickel & A. Camus<\/em> used for wood products processing<\/td>\nNguy\u1ec5n Th\u1ecb Tr\u1ecbnh
\nNguy\u1ec5n V\u0103n Th\u1ecd
\nNguy\u1ec5n B\u1ea3o Ng\u1ecdc
\nNguy\u1ec5n Tr\u1ecdng Ngh\u0129a<\/em><\/td>\n		122<\/td>\n<\/tr>\n
14.<\/td>\nM\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u t\u1ea1o
\n\u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 nh\u1eadn bi\u1ebft g\u1ed7
\nB\u1eb1ng l\u0103ng (Lagerstroemia calyculata<\/em> Kurz) v\u00e0 g\u1ed7 S\u1ebfn m\u1ee7 (Shorea roxburgii<\/em>
\nG.Don)<\/td>\n		Some special characteristics and special chemical compositions to identify Lagerstroemia calyculata<\/em> Kurz and Shorea roxburgii<\/em> G.Don<\/td>\nV\u0169 Th\u1ecb H\u1ed3ng Th\u1eafm
\nL\u01b0u Qu\u1ed1c Th\u00e0nh
\nV\u0169 Th\u1ecb Ngoan
\nB\u00f9i H\u1eefu Th\u01b0\u1edfng<\/em><\/td>\n		130<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

<\/a>NGHI\u00caN C\u1ee8U CH\u1eccN L\u1eccC D\u00d2NG V\u00d4 T\u00cdNH KEO L\u00c1 TR\u00c0M
\nSINH TR\u01af\u1edeNG NHANH CHO V\u00d9NG \u0110\u00d4NG NAM B\u1ed8<\/p>\n

<\/a>Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean, Ng\u00f4 V\u0103n Ch\u00ednh, D\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 sinh h\u1ecdc L\u00e2m nghi\u1ec7p<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u nh\u1eb1m ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c c\u00e1c gi\u1ed1ng Keo l\u00e1 tr\u00e0m c\u00f3 sinh tr\u01b0\u1edfng nhanh, h\u00ecnh d\u1ea1ng th\u00e2n \u0111\u1eb9p ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn \u1edf v\u00f9ng \u0110\u00f4ng Nam B\u1ed9. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh tr\u00ean kh\u1ea3o nghi\u1ec7m g\u1ed3m 35 d\u00f2ng v\u00f4 t\u00ednh, 30 d\u00f2ng m\u1edbi ch\u1ecdn l\u1ecdc v\u00e0 5 d\u00f2ng \u0111\u1ed1i ch\u1ee9ng t\u1ea1i B\u00e0u B\u00e0ng, B\u00ecnh D\u01b0\u01a1ng. K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 \u1edf giai \u0111o\u1ea1n 36 th\u00e1ng tu\u1ed5i cho th\u1ea5y c\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t gi\u1eefa c\u00e1c d\u00f2ng v\u00f4 t\u00ednh v\u1ec1 t\u1ea5t c\u1ea3 c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y. C\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng c\u00f3 h\u1ec7 s\u1ed1 di truy\u1ec1n theo ngh\u0129a r\u1ed9ng (H2<\/sup> = 0,24 – 0,26) v\u00e0 h\u1ec7 s\u1ed1 bi\u1ebfn \u0111\u1ed9ng di truy\u1ec1n (CVG<\/sub> = 5,5 – 18,2%) cao h\u01a1n so v\u1edbi c\u00e1c ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y (H2<\/sup> = 0,12 – 0,15; CVG<\/sub> = 3,5 – 4,3). T\u01b0\u01a1ng quan ki\u1ec3u gen gi\u1eefa c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y l\u00e0 th\u1ea5p v\u00e0 kh\u00f4ng c\u00f3 \u00fd ngh\u0129a (Rg = 0,06 – 0,14). T\u0103ng thu di truy\u1ec1n l\u00fd thuy\u1ebft v\u1ec1 c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng \u0111\u1ea1t 7,1 – 24,7%. C\u0103n c\u1ee9 v\u00e0o k\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 \u0111\u00e3 ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c 3 d\u00f2ng LT35, LT70 v\u00e0 LT74 \u0111\u1ea1t n\u0103ng su\u1ea5t t\u1eeb 26,6 \u0111\u1ebfn 27,1 m3<\/sup>\/ha\/n\u0103m v\u00e0 v\u01b0\u1ee3t 37,2% so v\u1edbi trung b\u00ecnh kh\u1ea3o nghi\u1ec7m \u0111\u1ed3ng th\u1eddi c\u00f3 th\u00e2n th\u1eb3ng, c\u00e0nh nh\u00e1nh nh\u1ecf ph\u00f9 h\u1ee3p tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> D\u00f2ng v\u00f4 t\u00ednh, h\u1ec7 s\u1ed1 di truy\u1ec1n theo ngh\u0129a r\u1ed9ng, Keo l\u00e1 tr\u00e0m, sinh tr\u01b0\u1edfng, t\u0103ng thu di truy\u1ec1n<\/td>\n<\/tr>\n

\n

<\/a>Selection of fast growing Acacia auriculiformis<\/em> for planting in the Southeast Vietnam<\/strong><\/p>\n

The objective of the study was to select Acacia auriculiformis<\/em> clones of fast growing and good stem form for timber production in the Southeast. The study was implemented in a clonal trial at Bau Bang district, Binh Duong province. The trial include 30 newly selected clones and 5 approved clones used as controls. Result of evaluation at 36 months old showed significant difference between clones in all growth and stem quality traits. Growth traits had higher broad-sense heritability (H2<\/sup> = 0.24 – 0.26) and coefficient of genetic variation (CVG<\/sub> = 5.5 – 18.2%) compared to those values of stem qualities (H2<\/sup> = 0.12 – 0.15; CVG<\/sub> = 3.5 – 4.3). Genotypic correlation between growth and stem quality traits were low and non-significant (Rg = 0.06 – 0.14). Predicted genetic gain of growth traits ranged between 7.1 and 24.7%. Based on evaluation results, 3 clones LT35, LT70 and LT74 with mean annual increment ranged from 26.6 to 27.1 m3<\/sup>\/ha\/year which is 37.2% higher than trial mean and also have good stem straightness and branch size for timber production.<\/p>\n

Keywords:<\/em><\/strong> Acacia auriculiformi<\/em>s, broad-sense heritability, clone, genetic gain, growth<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U \u0110A D\u1ea0NG DI TRUY\u1ec0N C\u00c1C BI\u1ebeN CH\u1ee6NG
\nTH\u00d4NG CARIBE \u0110\u01af\u1ee2C TR\u1ed2NG T\u1ea0I VI\u1ec6T NAM B\u1eb0NG CH\u1ec8 TH\u1eca ISSR<\/p>\n

<\/a>Tr\u1ea7n \u0110\u1ee9c V\u01b0\u1ee3ng1<\/sup>, Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean1<\/sup>, Nguy\u1ec5n Th\u1ecb Huy\u1ec1n1<\/sup>, H\u00e0 Th\u1ecb Huy\u1ec1n Ng\u1ecdc1<\/sup>,
\nL\u00ea Th\u1ecb Th\u1ee7y1<\/sup>, Nguy\u1ec5n Th\u1ecb Vi\u1ec7t H\u00e01<\/sup>, Tr\u1ea7n Th\u1ecb Thu H\u00e01<\/sup>, L\u00ea S\u01a1n1<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 Sinh h\u1ecdc L\u00e2m nghi\u1ec7p,
\nVi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Th\u00f4ng caribe (Pinus caribaea <\/em>Morelet) \u0111\u01b0\u1ee3c chia th\u00e0nh 3 bi\u1ebfn ch\u1ee7ng l\u00e0 hondurensis, bahamensis<\/em> v\u00e0 caribaea<\/em> d\u1ef1a v\u00e0o v\u1ecb tr\u00ed ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean c\u1ee7a lo\u00e0i \u1edf c\u00e1c v\u00f9ng \u0111\u1ecba l\u00fd kh\u00e1c nhau. \u0110\u00e1nh gi\u00e1 t\u00ednh \u0111a d\u1ea1ng di truy\u1ec1n c\u1ee7a c\u00e1c bi\u1ebfn ch\u1ee7ng b\u1eb1ng vi\u1ec7c s\u1eed d\u1ee5ng 5 ch\u1ec9 th\u1ecb ISSR ph\u00e2n t\u00edch 93 m\u1eabu nghi\u00ean c\u1ee9u, k\u1ebft qu\u1ea3 c\u00f3 58 ph\u00e2n \u0111o\u1ea1n DNA \u0111\u01b0\u1ee3c nh\u00e2n b\u1ea3n v\u1edbi ph\u00e2n \u0111o\u1ea1n \u0111a h\u00ecnh chi\u1ebfm 92,16%, h\u1ec7 s\u1ed1 \u0111a d\u1ea1ng di truy\u1ec1n trung b\u00ecnh h <\/em>= 0,329; h\u1ec7 s\u1ed1 Shannon trung b\u00ecnh I<\/em> = 0,491 v\u00e0 t\u1ef7 l\u1ec7 ph\u00e2n \u0111o\u1ea1n \u0111a h\u00ecnh trung b\u00ecnh PPB<\/em> = 92,16%. Trong \u0111\u00f3, \u0111a d\u1ea1ng di truy\u1ec1n cao nh\u1ea5t thu\u1ed9c v\u1ec1 bi\u1ebfn ch\u1ee7ng hondurensis<\/em> (I<\/em> = 0,542; h<\/em> = 0,364 v\u00e0 PPB<\/em> = 100%) v\u00e0 th\u1ea5p nh\u1ea5t l\u00e0 bi\u1ebfn ch\u1ee7ng bahamensis <\/em>(I<\/em> = 0,453;
\nh<\/em> = 0,308 v\u00e0 PPB<\/em> = 79,41%). Ch\u1ec9 s\u1ed1 sai kh\u00e1c di truy\u1ec1n GST<\/sub><\/em> ch\u1ec9 \u0111\u1ea1t 0,0932, ch\u1ee9ng t\u1ecf m\u1ee9c \u0111\u1ed9 sai kh\u00e1c v\u1ec1 m\u1eb7t di truy\u1ec1n gi\u1eefa c\u00e1c bi\u1ebfn ch\u1ee7ng l\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p ch\u1ec9 chi\u1ebfm 9,32% (< 10%). Gi\u00e1 tr\u1ecb ch\u1ec9 s\u1ed1 trao \u0111\u1ed5i gen (Nm)<\/em> gi\u1eefa c\u00e1c bi\u1ebfn ch\u1ee7ng \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n \u0111\u1ea1t 4,867 cho th\u1ea5y t\u1ea7n s\u1ed1 trao \u0111\u1ed5i gen gi\u1eefa c\u00e1c bi\u1ebfn ch\u1ee7ng l\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i cao. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch v\u1ec1 m\u1ee9c \u0111\u1ed9 thay \u0111\u1ed5i ph\u00e2n t\u1eed gi\u1eefa 3 bi\u1ebfn ch\u1ee7ng Th\u00f4ng caribe cho th\u1ea5y, m\u1ee9c \u0111\u1ed9 thay \u0111\u1ed5i ph\u00e2n t\u1eed gi\u1eefa 3 bi\u1ebfn ch\u1ee7ng l\u00e0 th\u1ea5p ch\u1ec9 \u0111\u1ea1t 9% v\u00e0 gi\u1eefa c\u00e1c gia \u0111\u00ecnh trong c\u00f9ng m\u1ed9t bi\u1ebfn ch\u1ee7ng l\u00e0 cao (\u0111\u1ea1t 91%) v\u1edbi gi\u00e1 tr\u1ecb p < 0,001. Kho\u1ea3ng c\u00e1ch di truy\u1ec1n dao \u0111\u1ed9ng t\u1eeb 0,034 \u0111\u1ebfn 0,113 v\u00e0 m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed3ng dao \u0111\u1ed9ng t\u1eeb 0,894 (84,9%) \u0111\u1ebfn 0,967 (96,7%). \u0110\u1ed1i v\u1edbi 3 bi\u1ebfn ch\u1ee7ng \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u, bi\u1ebfn ch\u1ee7ng hondorensis <\/em>v\u00e0 bahanensis<\/em> c\u00f3 m\u1ed1i quan h\u1ec7 di truy\u1ec1n g\u1ea7n g\u0169i v\u1edbi nhau h\u01a1n so v\u1edbi bi\u1ebfn ch\u1ee7ng caribaea.<\/em><\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Bi\u1ebfn ch\u1ee7ng, c\u1ea5u tr\u00fac qu\u1ea7n th\u1ec3, \u0111a d\u1ea1ng di truy\u1ec1n, Th\u00f4ng caribe<\/td>\n<\/tr>\n

\n

<\/a>Evaluation of the genetic diversity and population structure of Pinus caribaea <\/em>in Vietnam<\/strong><\/p>\n

Pinus caribaea <\/em>Morelet is divided into 3 variants hondurensis, bahamensis<\/em> and caribaea<\/em> based on the species magnetic distribution in different geographic regions. The results showed that 58 DNA segments were accounted with polymorphic segments accounting for 92.16%, mean genetic diversity coefficient h <\/em>= 0.329; mean Shannon coefficient I<\/em> = 0.491, and average polymorphic fraction ratio PPB<\/em> = 92.16%. The highest genetic diversity belongs to the var. hondurensis<\/em> (I<\/em> = 0.542; h<\/em> = 0.364 and PPB<\/em> = 100%) and the lowest is the var. bahamensis <\/em>(I<\/em> = 0.453; h<\/em> = 0.308 and PPB<\/em> = 79.41%). The GST<\/sub><\/em> genetic differentiation index is only 0.0932, proving that the level of genetic difference between variants is relatively low at only 9.32% (< 10%). The calculated gene exchange index (Nm)<\/em> value of 4.8670 indicates that the frequency of gene exchange between variants is relatively high. Analysis of the level of molecular change between 3 variants, the species showed that the level of molecular change between 3 strains was low at only 9% and between families within the same strain was high (reaching 91%) with a p-value of < 0.001. The genetic distance ranged from 0.034 to 0.113 and the degree of similarity ranged from 0.894 (84.9%) to 0.967 (96.7%). In the genetic relationship at species level, the var. hondorensis <\/em>and var. bahanensis<\/em> have a closer genetic relationship with each other than the var. caribaea.<\/em><\/p>\n

Keywords:<\/em><\/strong> Genetic diversity, Pinus caribaea<\/em>, population structure, variants<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U NH\u00c2N GI\u1ed0NG C\u00c2Y S\u01a0N TRA (Docynia indica <\/em>Wall.) B\u1eb0NG PH\u01af\u01a0NG PH\u00c1P GH\u00c9P T\u1ea0I V\u00d9NG T\u00c2Y B\u1eaeC<\/p>\n

<\/a>H\u00e0 V\u0103n Ti\u1ec7p, L\u00ea Anh Thanh, Nguy\u1ec5n V\u0103n H\u00f9ng, Nguy\u1ec5n H\u01b0\u01a1ng Ly, Ho\u00e0ng Di\u1ec7p Linh, Ph\u1ea1m \u0110\u1ee9c S\u01a1n, L\u00f2 Th\u1ecb Ki\u1ec1u, \u0110inh C\u00f4ng Tr\u00ecnh<\/p>\n

Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p T\u00e2y B\u1eafc, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c tri\u1ec3n khai nh\u1eb1m b\u1ed5 sung c\u00e1c th\u00ed nghi\u1ec7m v\u1ec1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a ki\u1ec3u gh\u00e9p, th\u1eddi \u0111i\u1ec3m gh\u00e9p, chi\u1ec1u d\u00e0i c\u00e0nh gh\u00e9p \u0111\u1ebfn t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y gh\u00e9p S\u01a1n tra. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng, sau 6 th\u00e1ng gh\u00e9p, t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a c\u00e2y gh\u00e9p t\u1ea1i th\u1eddi v\u1ee5 gh\u00e9p th\u00e1ng 12 v\u1edbi ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p c\u00e0nh, ki\u1ec3u gh\u00e9p n\u1ed1i cho t\u1ef7 l\u1ec7 s\u1ed1ng cao nh\u1ea5t \u0111\u1ea1t 92,7% v\u00e0 sinh tr\u01b0\u1edfng chi\u1ec1u cao ch\u1ed3i gh\u00e9p cao nh\u1ea5t \u0111\u1ea1t trung b\u00ecnh 68,1 cm. Chi\u1ec1u d\u00e0i c\u00e0nh gh\u00e9p 6 – 8 cm, t\u1ef7 l\u1ec7 s\u1ed1ng c\u00e0nh gh\u00e9p \u0111\u1ea1t cao nh\u1ea5t 93,3%, ch\u1ed3i gh\u00e9p \u0111\u1ea1t chi\u1ec1u cao trung b\u00ecnh 67,5 cm. Sau khi gh\u00e9p, c\u00e0nh gh\u00e9p ra ch\u1ed3i gh\u00e9p s\u1edbm nh\u1ea5t sau 13 ng\u00e0y gh\u00e9p v\u00e0 mu\u1ed9n nh\u1ea5t sau 20 ng\u00e0y gh\u00e9p. Tr\u00ean c\u01a1 s\u1edf k\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m k\u1ebft h\u1ee3p v\u1edbi c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u kh\u00e1c m\u00e0 Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p T\u00e2y B\u1eafc \u0111\u00e3 tri\u1ec3n khai tr\u01b0\u1edbc \u0111\u00f3 \u0111\u1ec3 x\u00e2y d\u1ef1ng quy tr\u00ecnh k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng S\u01a1n tra b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p, quy tr\u00ecnh k\u1ef9 thu\u1eadt \u0111\u00e3 \u0111\u01b0\u1ee3c B\u1ed9 N\u00f4ng nghi\u1ec7p v\u00e0 Ph\u00e1t tri\u1ec3n n\u00f4ng th\u00f4n c\u00f4ng nh\u1eadn l\u00e0 ti\u1ebfn b\u1ed9 k\u1ef9 thu\u1eadt.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u00e0nh gh\u00e9p, ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p, th\u1eddi \u0111i\u1ec3m gh\u00e9p, S\u01a1n tra<\/td>\n<\/tr>\n

\n

<\/a>Study on propagation of Docynia indica<\/em> by grafting in Northwest region<\/strong><\/p>\n

This study was conducted to research on effects of grafting period and grafting types as well as the length of grafted branches on survival rate and growth of Docynia indica<\/em>\u2019s grafted seedlings. The results revealed that after 6 months grafted, the survival rate of grafted seedlings was highest, reached 92.7% with total height growing of scions was 68.1 cm in December with splice graft, and the length of grafted branches was 6 – 8 cm with highest survival rate 93.3% and total height growing of scions was 67.5 cm. After 13 days grafted, the buds start appeared on the grafted branches and till 20 days grafted. Based on results of this research and additionally previous research conducted by Forest Science Central of Northwest Vietnam, an innovative technical propagation of Docynia indica<\/em> by grafting was compiled and certified by Mistry of Agriculture and Rural Development of Vietnam.<\/p>\n

Keywords:<\/em><\/strong> Docynia indica<\/em>, Grafted branch, grafting types, grafted period<\/p>\n

 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U K\u1ef8 THU\u1eacT NH\u00c2N GI\u1ed0NG
\nC\u00c2Y M\u1eacT NH\u00c2N (Eurycoma longifolia<\/em> Jack) B\u1eb0NG GI\u00c2M HOM<\/p>\n

<\/a>Tr\u1ea7n Th\u1ecb Th\u00fay H\u1eb1ng1<\/sup>, Ph\u1ea1m Ti\u1ebfn B\u1eb1ng1<\/sup>, V\u00f5 \u0110\u1ea1i H\u1ea3i2<\/sup><\/p>\n

1<\/sup> Trung t\u00e2m L\u00e2m nghi\u1ec7p Nhi\u1ec7t \u0111\u1edbi
\n2<\/sup> Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

M\u1eadt nh\u00e2n (Eurycoma longifolia<\/em> Jack) l\u00e0 lo\u00e0i c\u00e2y d\u01b0\u1ee3c li\u1ec7u qu\u00fd, c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao, ph\u00e2n b\u1ed1 r\u1ed9ng \u1edf Vi\u1ec7t Nam. Lo\u00e0i c\u00e2y n\u00e0y \u0111ang b\u1ecb khai th\u00e1c m\u1ea1nh trong t\u1ef1 nhi\u00ean d\u1eabn \u0111\u1ebfn di\u1ec7n t\u00edch v\u00e0 tr\u1eef l\u01b0\u1ee3ng b\u1ecb suy gi\u1ea3m m\u1ea1nh. M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u l\u00e0 nh\u1eb1m ho\u00e0n thi\u1ec7n k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng M\u1eadt nh\u00e2n b\u1eb1ng gi\u00e2m hom \u0111\u1ec3 cung c\u1ea5p ngu\u1ed3n c\u00e2y gi\u1ed1ng c\u00f3 ngu\u1ed3n g\u1ed1c xu\u1ea5t x\u1ee9 r\u00f5 r\u00e0ng, ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t. Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i V\u01b0\u1eddn \u01b0\u01a1m Trung t\u00e2m L\u00e2m nghi\u1ec7p Nhi\u1ec7t \u0111\u1edbi, th\u00e0nh ph\u1ed1 Pleiku, t\u1ec9nh Gia Lai. K\u1ebft qu\u1ea3 cho th\u1ea5y, ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng NAA 500 ppm, nhi\u1ec7t \u0111\u1ed9 nh\u00e0 gi\u00e2m hom \u0111\u1ea1t 30o<\/sup>C v\u00e0 m\u1ed7i l\u1ea7n t\u01b0\u1edbi phun 6 gi\u00e2y, lo\u1ea1i hom ngay s\u00e1t hom ng\u1ecdn v\u00e0 th\u1eddi v\u1ee5 gi\u00e2m hom tr\u01b0\u1edbc m\u00f9a m\u01b0a (th\u00e1ng 3) cho k\u1ebft qu\u1ea3 c\u00e1c ch\u1ec9 ti\u00eau t\u1ef7 l\u1ec7 hom ra r\u1ec5, s\u1ed1 ch\u1ed3i\/hom, chi\u1ec1u cao ch\u1ed3i, s\u1ed1 r\u1ec5\/hom v\u00e0 chi\u1ec1u d\u00e0i r\u1ec5 \u0111\u1ec1u \u0111\u1ea1t cao nh\u1ea5t v\u00e0 c\u00f3 s\u1ef1 sai kh\u00e1c c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c c\u00f2n l\u1ea1i. \u1ede giai \u0111o\u1ea1n 90 ng\u00e0y, t\u1ef7 l\u1ec7 s\u1ed1ng b\u00ecnh qu\u00e2n \u0111\u1ea1t tr\u00ean 80%, t\u1ef7 l\u1ec7 hom ra r\u1ec5 tr\u00ean 78%; trung b\u00ecnh c\u00f3 t\u1eeb 2 – 5 ch\u1ed3i\/hom, v\u1edbi chi\u1ec1u cao ch\u1ed3i 8,2 – 10,4 cm; trung b\u00ecnh c\u00f3 4 – 6 r\u1ec5\/hom, v\u1edbi chi\u1ec1u d\u00e0i r\u1ec5 9,9 – 16,5 cm.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> M\u1eadt nh\u00e2n, ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng, lo\u1ea1i hom, th\u1eddi v\u1ee5 gi\u00e2m hom<\/td>\n<\/tr>\n

\n

<\/a>Studying techniques for breeding Eurycoma longifolia<\/em> Jack by cuttings<\/strong><\/p>\n

Eurycoma longifolia<\/em> jack is a valuable medicinal plant with a great economic value, widely distributed in Vietnam. In the wild, this species is heavily exploited, which has caused the area and reserves to drastically shrink. A clear source of high-quality seedlings will be available by perfecting the cuttings-based propagation method for Eurycoma longifolia<\/em>. The experiment was carried out at the Tropical Forest Research Centre (TFRC), Pleiku city, Gia Lai province. The findings indicated that wooden stem cuttings, the growth regulator NAA 500 ppm, the cutting house temperature reaching 30o<\/sup>C, and each time the spray was applied for 6 seconds, the below cuttings were immediately upper the cuttings, as well as the cutting season prior to the rainy season (March) the findings revealed that the percentage of cuttings that the percentage that took root, the number of shoots per stem cutting, the height of the shoots, the number of roots per stem cutting, and the length of the roots all reached the highest and had statistically significant differences with the other formulas. At 90 days, the average survival rate was over 80%, and more than 78% of the cuttings had taken root. On average, there are 2 to 5 shoots per stem cutting, with a shoot height of 8.2 to 10.4 cm, and 4 – 6 roots per stem cutting, with a root length of 9.9 to 16.5 cm. This article focuses on research on techniques for breeding by stem cuttings in order to preserve and develop the gene source of the Eurycoma longifolia<\/em> plant, which serves as a source of raw materials for the manufacture of medicines.<\/p>\n

Keywords:<\/em><\/strong> Eurycoma longifolia<\/em>, growth regulator, types of stem cutting, cutting season<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U NH\u00c2N GI\u1ed0NG TR\u00c0M L\u00c1 D\u00c0I (Melaleuca leucadendra<\/em> L.) B\u1eb0NG PH\u01af\u01a0NG PH\u00c1P NU\u00d4I C\u1ea4Y M\u00d4 T\u1ebe B\u00c0O<\/p>\n

<\/a>Ph\u1ea1m Th\u1ecb M\u1eadn, V\u0169 \u0110\u00ecnh H\u01b0\u1edfng, Nguy\u1ec5n Xu\u00e2n H\u1ea3i, Ki\u1ec1u M\u1ea1nh H\u00e0,
\nTr\u01b0\u01a1ng Th\u1ecb Th\u00f9y Trang, Nguy\u1ec5n Th\u1ecb Linh, V\u0169 Th\u1ecb Thu Thanh, Ninh V\u0103n Tu\u1ea5n<\/p>\n

Trung t\u00e2m \u1ee8ng d\u1ee5ng Khoa h\u1ecdc K\u1ef9 thu\u1eadt L\u00e2m nghi\u1ec7p Nam B\u1ed9<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Tr\u00e0m l\u00e1 d\u00e0i \u0111\u00e3 \u0111\u01b0\u1ee3c nh\u1eadp n\u1ed9i t\u1eeb Australia v\u00e0o n\u01b0\u1edbc ta n\u0103m 1993 v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng ph\u1ed5 bi\u1ebfn \u1edf v\u00f9ng \u0110\u1ed3ng b\u1eb1ng s\u00f4ng C\u1eedu Long. Tuy nhi\u00ean, nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng b\u1ecb gi\u1ea3m s\u00fat do ngu\u1ed3n gi\u1ed1ng b\u1ecb tho\u00e1i h\u00f3a. Vi nh\u00e2n gi\u1ed1ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p h\u1eefu hi\u1ec7u \u0111\u1ec3 t\u1ea1o m\u1ed9t l\u01b0\u1ee3ng l\u1edbn c\u00e2y con \u0111\u1ed3ng \u0111\u1ec1u v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng ph\u1ee5c v\u1ee5 cho vi\u1ec7c ch\u1ecdn gi\u1ed1ng, tr\u1ed3ng r\u1eebng v\u00e0 b\u1ea3o t\u1ed3n ngu\u1ed3n gen. B\u00e0i b\u00e1o n\u00e0y gi\u1edbi thi\u1ec7u k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p nu\u00f4i c\u1ea5y m\u00f4 t\u1ebf b\u00e0o cho lo\u00e0i Tr\u00e0m l\u00e1 d\u00e0i. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y: Kh\u1eed tr\u00f9ng m\u1eabu trong 10 ph\u00fat b\u1eb1ng dung d\u1ecbch Javel n\u1ed3ng \u0111\u1ed9 1,5% cho hi\u1ec7u qu\u1ea3 t\u1ed1t nh\u1ea5t v\u1edbi t\u1ef7 l\u1ec7 m\u1eabu s\u1ea1ch \u0111\u1ea1t 64,8%, t\u1ef7 l\u1ec7 m\u1eabu b\u1eadt ch\u1ed3i cao nh\u1ea5t (46,7%). S\u1ed1 l\u01b0\u1ee3ng ch\u1ed3i h\u1eefu hi\u1ec7u cao nh\u1ea5t trong m\u00f4i tr\u01b0\u1eddng MS + 1,0 mg\/l BAP + 0,1 mg\/l NAA v\u1edbi trung b\u00ecnh 20,4 ch\u1ed3i\/c\u1ee5m. M\u00f4i tr\u01b0\u1eddng 1\/2 MS + 2,0 mg\/l IBA cho t\u1ef7 l\u1ec7 ra r\u1ec5 100%. K\u1ebft qu\u1ea3 n\u00e0y l\u00e0 c\u01a1 s\u1edf khoa h\u1ecdc trong l\u01b0u gi\u1eef, nh\u00e2n gi\u1ed1ng v\u00e0 b\u1ea3o t\u1ed3n ngu\u1ed3n gen c\u00e2y Tr\u00e0m l\u00e1 d\u00e0i.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Tr\u00e0m l\u00e1 d\u00e0i, in vitro<\/em>, nh\u00e2n ch\u1ed3i<\/td>\n<\/tr>\n

\n

<\/a>In vitro<\/em> micropropagation for Melaleuca leucadendra<\/em> L.<\/strong><\/p>\n

Melaleuca leucadendra<\/em> L. species was imported from Australia since 1993 and widely planted in the Mekong delta. However, recent years, productivity of M. leucadendra<\/em> L. plantations decreased due to breed degeneration. In vitro<\/em> micropropagation is an effective method to produce large number of planting meterial with high quality for tree breeding, afforestation and plant gen conservation. This paper presents the research results of micropropagation for M. leucadendra<\/em> L. species. The results showed that samples were disinfected for 10 minutes with a 1.5% Javel solution can give 64.8% cleaned samples and the percentage of budding samples was the hishest (46.7%). The highest number of effetive buds in treatment (MS + 1.0 mg\/l BAP + 0.1 mg\/l NAA solution) had 20.4 buds per cluster. Treatment (1\/2 MS + 2.0 mg\/l IBA) created 100% rooting rate. This result is scientific fundament for storing, propagating and gene conserving of the Melaleuca leucadendra<\/em> L. species.<\/p>\n

Keywords:<\/em><\/strong> Melaleuca leucadendra, in vitro<\/em>, mutli-shoot<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U CH\u1eccN GI\u1ed0NG B\u1ea0CH \u0110\u00c0N LAI M\u1edaI
\nSINH TR\u01af\u1edeNG NHANH PH\u1ee4C V\u1ee4 TR\u1ed2NG R\u1eeaNG G\u1ed6 L\u1edaN
\nT\u1ea0I THU\u1eacN CH\u00c2U, S\u01a0N LA<\/p>\n

<\/a>L\u00e3 Tr\u01b0\u1eddng Giang, Ng\u00f4 V\u0103n Ch\u00ednh, Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean, Nguy\u1ec5n H\u1eefu S\u1ef9,
\nC\u1ea5n Th\u1ecb Lan, D\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n, \u0110\u1ed7 Thanh T\u00f9ng, \u0110\u1ed7 H\u1eefu S\u01a1n<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 sinh h\u1ecdc L\u00e2m nghi\u1ec7p<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u nh\u1eb1m \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y v\u00e0 ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c c\u00e1c d\u00f2ng b\u1ea1ch \u0111\u00e0n lai m\u1edbi c\u00f3 tri\u1ec3n v\u1ecdng ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn \u1edf v\u00f9ng T\u00e2y B\u1eafc B\u1ed9. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh tr\u00ean kh\u1ea3o nghi\u1ec7m d\u00f2ng v\u00f4 t\u00ednh b\u1ea1ch \u0111\u00e0n lai g\u1ed3m 40 d\u00f2ng, tr\u1ed3ng n\u0103m 2019 t\u1ea1i Thu\u1eadn Ch\u00e2u, S\u01a1n La. K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 \u1edf giai \u0111o\u1ea1n 36 th\u00e1ng tu\u1ed5i cho th\u1ea5y c\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t v\u1ec1 c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y v\u00e0 t\u1ef7 l\u1ec7 s\u1ed1ng gi\u1eefa c\u00e1c d\u00f2ng v\u00f4 t\u00ednh. Nh\u00f3m c\u00e1c d\u00f2ng sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t trong kh\u1ea3o nghi\u1ec7m l\u00e0 UP164, UP434, UP438, UP190, UP223, UP425, UP433, UP435, UP236 v\u00e0 UP432 v\u1edbi th\u1ec3 t\u00edch th\u00e2n c\u00e2y trung b\u00ecnh \u0111\u1ea1t 67,5 dm3<\/sup>\/c\u00e2y, v\u01b0\u1ee3t 43,9% so v\u1edbi trung b\u00ecnh chung c\u1ee7a kh\u1ea3o nghi\u1ec7m, v\u01b0\u1ee3t 115,6% so v\u1edbi gi\u1ed1ng \u0111\u1ed1i ch\u1ee9ng U6. D\u1ef1a v\u00e0o n\u0103ng su\u1ea5t \u0111\u00e3 ch\u1ecdn ra \u0111\u01b0\u1ee3c 10 d\u00f2ng b\u1ea1ch \u0111\u00e0n lai bao g\u1ed3m UP434, UP438, UP164, UP223, UP425, UP190, UP97, UP236, UP435 v\u00e0 UP433 c\u00f3 n\u0103ng su\u1ea5t trung b\u00ecnh l\u00e0 30,0 m3<\/sup>\/ha\/n\u0103m v\u01b0\u1ee3t 44,9% so v\u1edbi trung b\u00ecnh to\u00e0n th\u00ed nghi\u1ec7m. C\u00e1c d\u00f2ng n\u00e0y \u0111\u1ed3ng th\u1eddi c\u00f3 th\u00e2n th\u1eb3ng, c\u00e0nh nh\u00e1nh nh\u1ecf v\u1edbi ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y t\u1ed5ng h\u1ee3p t\u01b0\u01a1ng \u0111\u1ed1i cao, t\u1eeb 3,7 \u0111\u1ebfn 4,0 \u0111i\u1ec3m. \u0110\u00e2y l\u00e0 nh\u1eefng d\u00f2ng r\u1ea5t c\u00f3 tri\u1ec3n v\u1ecdng \u0111\u1ec3 c\u00f4ng nh\u1eadn gi\u1ed1ng m\u1edbi ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn t\u1ea1i v\u00f9ng T\u00e2y B\u1eafc B\u1ed9.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea1ch \u0111\u00e0n lai, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y, d\u00f2ng v\u00f4 t\u00ednh, sinh tr\u01b0\u1edfng<\/td>\n<\/tr>\n

\n

<\/a>Selection of fast growing eucalyptus hybrid clones for timber plantation in Thuan Chau, Son La<\/strong><\/p>\n

The purpose of the project was to evaluate the growth and stem quality of the newly selected Eucalyptus hybrid clones for timber plantation in the North Western area. The study was conducted at the Eucalyptus hybrid clonal trial, containing 40 clones, planted in Thuan Chau, Son La province in 2019. The results at the age of 36 months showed that there were significant differences in the growth, stem quality and survival rates between clones. The group of best growing strains in the trial were UP164, UP434, UP438, UP190, UP223, UP425, UP433, UP435, UP236 and UP432 with an average stem volume of 67.5 dm3<\/sup>\/plant, exceeding 43.9% compared with the overall average of the trial, 115.6% higher than the control variety U6. Based on the selected yield, 10 hybrid Eucalyptus lines including UP434, UP438, UP164, UP223, UP425, UP190, UP97, UP236, UP435 and UP433 had an average yield of 30.0 m3<\/sup>\/ha\/year, exceeding 44.9% compared to the average of the whole experiment. These lines also have straight stems and small branches with relatively high stem quality, ranging from 3.7 to 4.0 points. These are also the prospective clones for recognition as new varieties for timber plantation in the North Western area.<\/p>\n

Keywords:<\/em><\/strong> Eucapytus hybrid, growth traits, clone, stem quality<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u1eb6C \u0110I\u1ec2M T\u00c1I SINH LO\u00c0I RAU S\u1eaeNG (Melientha suavis<\/em>)
\nT\u1ea0I C\u00d9 LAO CH\u00c0M, TH\u00c0NH PH\u1ed0 H\u1ed8I AN, T\u1ec8NH QU\u1ea2NG NAM<\/p>\n

<\/a>Tr\u1ea7n Minh \u0110\u1ee9c1<\/sup>, Tr\u1ea7n Nam Th\u1eafng1<\/sup>, V\u0103n Th\u1ecb Y\u1ebfn1<\/sup>, Nguy\u1ec5n Ph\u01b0\u01a1ng V\u0103n2<\/sup>,
\nPh\u1ea1m Th\u00e0nh3<\/sup>, \u0110inh Di\u1ec5n4<\/sup>, Ph\u1ea1m C\u00f4ng Sanh5<\/sup><\/p>\n

1<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m, \u0110\u1ea1i H\u1ecdc Hu\u1ebf
\n2<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Qu\u1ea3ng B\u00ecnh
\n3<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc S\u01b0 ph\u1ea1m, \u0110\u1ea1i h\u1ecdc Hu\u1ebf
\n4<\/sup> Khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean Phong \u0110i\u1ec1n
\n5<\/sup> Ban Qu\u1ea3n l\u00fd Khu b\u1ea3o t\u1ed3n bi\u1ec3n C\u00f9 Lao Ch\u00e0m<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Lo\u00e0i Rau s\u1eafng (Melientha suavis<\/em>) ph\u00e2n b\u1ed1 \u1edf C\u00f9 Lao Ch\u00e0m c\u00f3 t\u1ed1c \u0111\u1ed9 sinh tr\u01b0\u1edfng ch\u1eadm, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf th\u1eddi k\u1ef3 c\u00e2y t\u00e1i sinh. C\u00f3 th\u1ec3 nh\u1eadn bi\u1ebft c\u00e1c giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e2y t\u00e1i sinh c\u1ee7a lo\u00e0i b\u1eb1ng c\u00e1c d\u1ea5u hi\u1ec7u h\u00ecnh th\u00e1i v\u00e0 ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng. \u1ede giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a th\u1eddi k\u1ef3 t\u00e1i sinh (giai \u0111o\u1ea1n c\u00e2y m\u1ea7m v\u00e0 c\u00e2y m\u1ea1) r\u1ec5 c\u00e2y ngo\u00e0i ch\u1ee9c n\u0103ng \u0111\u1ed3ng h\u00f3a m\u00f4i tr\u01b0\u1eddng c\u00f2n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng l\u00e0 d\u1ef1 tr\u1eef ch\u1ea5t dinh d\u01b0\u1ee1ng v\u00e0 \u0111\u1ea3m b\u1ea3o s\u1ef1 sinh t\u1ed3n c\u1ee7a c\u00e2y. Th\u00e2n c\u00e2y trong giai \u0111o\u1ea1n c\u00e2y con ch\u01b0a c\u00f3 tri\u1ec3n v\u1ecdng th\u01b0\u1eddng xuy\u00ean \u0111\u1ed5i ng\u1ecdn \u0111\u1ec3 th\u00edch \u1ee9ng v\u1edbi \u0111i\u1ec1u ki\u1ec7n b\u1ea5t l\u1ee3i c\u1ee7a m\u00f4i tr\u01b0\u1eddng. C\u00f3 s\u1ef1 bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh v\u1ec1 m\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh \u1edf giai \u0111o\u1ea1n chuy\u1ec3n ti\u1ebfp t\u1eeb c\u00e2y m\u1ea7m v\u00e0 c\u00e2y m\u1ea1 (c\u1ea5p chi\u1ec1u cao c\u00e2y d\u01b0\u1edbi 20 cm) sang c\u1ea5p chi\u1ec1u cao th\u1ee9 nh\u1ea5t (20 – 40 cm) c\u1ee7a giai \u0111o\u1ea1n c\u00e2y con ch\u01b0a c\u00f3 tri\u1ec3n v\u1ecdng v\u1edbi t\u1ef7 l\u1ec7 gi\u1ea3m t\u1edbi 7,84 l\u1ea7n; \u1edf c\u00e1c c\u1ea5p chi\u1ec1u cao ti\u1ebfp theo s\u1ef1 gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng c\u00e1 th\u1ec3 gi\u1eefa hai c\u1ea5p k\u1ebf ti\u1ebfp \u1ed5n \u0111\u1ecbnh trong kho\u1ea3ng 1,66 – 1,74 l\u1ea7n. Nguy\u00ean nh\u00e2n bi\u1ebfn \u0111\u1ed9ng s\u1ed1 l\u01b0\u1ee3ng ch\u1ee7 y\u1ebfu do t\u00ecnh tr\u1ea1ng m\u00f4i tr\u01b0\u1eddng kh\u00f4 h\u1ea1n v\u00e0 thi\u1ebfu \u00e1nh s\u00e1ng. Ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y t\u00e1i sinh v\u00e0 t\u1ef7 l\u1ec7 nh\u00f3m c\u00e2y t\u00e1i sinh ch\u1ed3i t\u0103ng d\u1ea7n theo \u0111\u1ed9 tu\u1ed5i. T\u1eeb giai \u0111o\u1ea1n c\u00e2y t\u00e1i sinh ch\u01b0a c\u00f3 tri\u1ec3n v\u1ecdng sang giai \u0111o\u1ea1n c\u00e2y t\u00e1i sinh c\u00f3 tri\u1ec3n v\u1ecdng t\u1ef7 l\u1ec7 c\u00e2y \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t (A) v\u00e0 k\u00e9m (C) t\u01b0\u01a1ng \u1ee9ng gi\u1eefa hai giai \u0111o\u1ea1n l\u00e0 60,20% v\u00e0 15,92% so v\u1edbi 65,49% v\u00e0 5,31%; t\u1ef7 l\u1ec7 c\u00e2y c\u00f3 ngu\u1ed3n g\u1ed1c ch\u1ed3i t\u01b0\u01a1ng \u1ee9ng l\u00e0 0,39% v\u00e0 30,09%. C\u00e2y t\u00e1i sinh c\u00f3 ph\u00e2n b\u1ed1 c\u1ee5m; t\u1ea7n su\u1ea5t b\u1eaft g\u1eb7p trong c\u00e1c \u00f4 m\u1eabu v\u00e0 m\u1eadt \u0111\u1ed9 c\u00e1 th\u1ec3 b\u00ecnh qu\u00e2n \u0111\u1ec1u \u1edf m\u1ee9c cao (50% v\u00e0 1.266 c\u00e2y\/ha). M\u1ee9c \u0111\u1ed9 ph\u1ee5 thu\u1ed9c v\u1ec1 ph\u00e2n b\u1ed1 c\u1ee7a c\u00e2y t\u00e1i sinh v\u1edbi c\u00e2y tr\u01b0\u1edfng th\u00e0nh c\u1ee7a lo\u00e0i x\u1ea5p x\u1ec9 90%.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Rau s\u1eafng, \u0111\u1eb7c \u0111i\u1ec3m t\u00e1i sinh, C\u00f9 Lao Ch\u00e0m, Khu D\u1ef1 tr\u1eef Th\u1ebf gi\u1edbi<\/td>\n<\/tr>\n

\n

<\/a>Regeneration characteristics of Melientha suavis<\/em> in Cu Lao Cham, Hoi An city, Quang Nam province<\/strong><\/p>\n

The growth rate of Melientha suavis<\/em> Pierre in Cu Lao Cham is slow, particularly in the period of regeneration. It\u2019s possible to define the development stages of regeneration by morphological and growth characteristics. In the early stage of regeneration (sprouting seedlings and seedlings), the root is not only the function of environment assimilation but also plays an important role in nutrient accumulation and ensuring the survival of the plant. Stems in the stage of seedlings often change the top to adapt to the unfavorable conditions of the environment. There is a strong variation in the density of seedlings in the transition period from sprouting seedlings and seedlings (H < 20 cm) to the first height class (H = 20 – 40 cm) of the unpromising offspring stage with a reduction rate of 7.84 times. In the next height classes, the decrease in the number of individuals in the next two classes is unchanged by 1.66 – 1.74 times. The main reason for changing seedling numbers is due to the drought and lack of light. The quality of regeneration and the percentage of regeneration by shoots increased gradually with the age. From the stage of unpromising offspring to promising offspring proportion of high (A) and low (C) seedling quality are 60.20% and 15.92% so compared to 65.49% v\u00e0 5.31%, respectively. The percentage of seedlings from buds is 0.39% and 30.09%. The seedlings have a clump distribution. The frequency of these seedlings in the plots and the average individual density was high (50% and 1,266 individuals\/ha). The level of distributional dependence of the regeneration on the mature trees of this species is around 90%.<\/p>\n

Keywords:<\/em><\/strong> Melientha suavis<\/em>, regeneration characteristics, Cu Lao Cham, Biosphere Reserves<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U \u0110\u1eb6C \u0110I\u1ec2M H\u00ccNH TH\u00c1I, V\u1eacT H\u1eacU <\/strong>
\nV\u00c0 H\u1ea0T GI\u1ed0NG BA LA M\u00cdT (Artocarpus chama <\/em>Buchanan-Hamilton) <\/strong>
\nT\u1ea0I L\u00c0O CAI V\u00c0 Y\u00caN B\u00c1I<\/strong><\/p>\n

<\/a>V\u0169 V\u0103n \u0110\u1ecbnh, Nguy\u1ec5n Qu\u1ed1c Th\u1ed1ng, Nguy\u1ec5n Th\u1ecb Loan<\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u B\u1ea3o v\u1ec7 r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Ba la m\u00edt (Artocarpus chama <\/em>Buchanan-Hamilton)<\/em> thu\u1ed9c h\u1ecd D\u00e2u t\u1eb1m (Moraceae), l\u00e0 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba \u0111a t\u00e1c d\u1ee5ng c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao, sinh tr\u01b0\u1edfng nhanh. G\u1ed7 Ba la m\u00edt n\u1eb7ng, c\u1ee9ng, b\u1ec1n, c\u00f3 \u0111\u1eb7c t\u00ednh c\u01a1 l\u00fd t\u1ed1t, \u00edt b\u1ecb m\u1ed1i m\u1ecdt, g\u1ed7 d\u00f9ng \u0111\u1ec3 \u0111\u00f3ng \u0111\u1ed3 n\u1ed9i th\u1ea5t cao c\u1ea5p, \u0111\u1ed3 gia d\u1ee5ng. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i, v\u1eadt h\u1eadu v\u00e0 h\u1ea1t gi\u1ed1ng Ba la m\u00edt t\u1ea1i L\u00e0o Cai v\u00e0 Y\u00ean B\u00e1i cho th\u1ea5y: Ba la m\u00edt l\u00e0 c\u00e2y g\u1ed7 l\u1edbn, trong \u0111i\u1ec1u ki\u1ec7n t\u1ef1 nhi\u00ean c\u00e2y c\u00f3 th\u1ec3 cao t\u1eeb 15 – 30 m, \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c \u0111\u1ea1t 40 – 50 cm (th\u1eadm ch\u00ed c\u00f3 nh\u1eefng c\u00e2y \u0111\u01b0\u1eddng k\u00ednh l\u00ean \u0111\u1ebfn h\u01a1n 1 m), th\u00e2n c\u00e2y h\u00ecnh tr\u1ee5, th\u1eb3ng, chi\u1ec1u cao d\u01b0\u1edbi c\u00e0nh l\u1edbn; Ba la m\u00edt l\u00e0 c\u00e2y r\u1ee5ng l\u00e1 kh\u00f4ng ho\u00e0n to\u00e0n, qu\u00e1 tr\u00ecnh r\u1ee5ng l\u00e1 th\u01b0\u1eddng k\u00e9o d\u00e0i t\u1eeb 46 \u0111\u1ebfn 50 ng\u00e0y; Pha ch\u1ed3i v\u00e0 l\u00e1 non k\u00e9o d\u00e0i t\u1eeb th\u00e1ng 2 – th\u00e1ng 4 h\u00e0ng n\u0103m; Giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n t\u1eeb khi ra hoa \u0111\u1ebfn khi qu\u1ea3 ch\u00edn th\u01b0\u1eddng k\u00e9o d\u00e0i t\u1eeb th\u00e1ng 4 \u0111\u1ebfn th\u00e1ng 8, qu\u1ea3 th\u01b0\u1eddng ch\u00edn r\u1ed9 t\u1eeb 15\/7 – 15\/8, h\u1ea1t c\u00f3 k\u00edch th\u01b0\u1edbc chi\u1ec1u r\u1ed9ng t\u1eeb 0,2 – 0,6 cm, d\u00e0i t\u1eeb 0,6 – 1,1 cm, h\u1ea1t khi kh\u00f4 c\u00f3 m\u00e0u x\u00e1m b\u1ea1c. Kh\u1ed1i l\u01b0\u1ee3ng h\u1ea1t dao \u0111\u1ed9ng t\u1eeb 582,3 – 622,7 g\/1.000 h\u1ea1t, t\u1ef7 l\u1ec7 h\u1ea1t ch\u1eafc \u0111\u1ea1t t\u1eeb 84,3 – 86,5%, h\u1ea1t \u0111\u1ea1t t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m cao nh\u1ea5t (86,3%) tr\u00ean gi\u00e1 th\u1ec3 c\u00e1t \u0111en.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ba la m\u00edt, \u0111\u1eb7c \u0111i\u1ec3m v\u1eadt h\u1eadu, h\u1ea1t<\/td>\n<\/tr>\n

\n

<\/a>Study on morphological, phenology and seed characteristics of Artocarpus chama <\/em>Buchanan-Hamilton in Yen Bai and Lao Cai provinces<\/strong><\/p>\n

Artocarpus chama <\/em>Buchanan-Hamilton belongs to the Moraceae family, is a multi-purpose indigenous tree with high economic value and fast growth. The wood is heavy, hard, durable, has good physical and mechanical properties, is not subject to termites, wood used to make high-class furniture and household appliances. The results of research on the morphological, phenology and seed characteristics show that: This is a large tree, it can reach to 15 – 30 m high and 40 – 50 cm diameter at breast height (there are even trees up to more than 1 m) in natural conditions; the trunk is cylindrical, straight, height under branches is large; This is an incomplete deciduous tree, the deciduous process usually lasts from 46 to 50 days; The phase of buds and young leaves lasts from February to April every year; Development stage from flowering to fruit ripening usually lasts from April to August, the maximum amount of ripe fruit is usually from about mid-July to mid- August, the\u00a0width\u00a0of\u00a0the\u00a0seeds\u00a0is 0.2 – 0.6 cm, the\u00a0length\u00a0of\u00a0the\u00a0seeds\u00a0is 0.6 – 1.1 cm, seeds when dried are silver-gray. The seed volume ranges from 582.3 – 622.7 g\/1,000 seeds, the percentage of firm seeds is from 84.3 – 86.5% and seed has the highest germination rate (86.3%) on the substrate of black sand.<\/p>\n

Keywords:<\/em><\/strong> Artocarpus chama <\/em>Buchanan-Hamilton, phenology, seed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u1ea2NH H\u01af\u1edeNG C\u1ee6A PH\u01af\u01a0NG TH\u1ee8C TR\u1ed2NG V\u00c0 T\u1ec8A C\u00c0NH
\n\u0110\u1ebeN SINH TR\u01af\u1edeNG C\u1ee6A S\u1ed2I PH\u1ea2NG T\u1ea0I L\u00c0O CAI<\/p>\n

<\/a>Ph\u1ea1m V\u0103n Vi\u1ec7n1<\/sup>, Cao V\u0103n L\u1ea1ng1<\/sup>, Ho\u00e0ng V\u0103n Th\u1eafng1<\/sup>, L\u00ea Th\u1ecb B\u00edch Th\u1ea3o1<\/sup>,
\nH\u00e0 Huy Nh\u1eadt2<\/sup>, Ho\u00e0ng V\u0103n Th\u00e0nh3<\/sup>, D\u01b0\u01a1ng Quang Trung3<\/sup><\/p>\n

[1]<\/strong>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 sinh h\u1ecdc L\u00e2m nghi\u1ec7p
\n3Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

C\u00e1c th\u00ed nghi\u1ec7m nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng v\u00e0 t\u1ec9a c\u00e0nh \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a S\u1ed3i ph\u1ea3ng t\u1ea1i B\u1ea3o Th\u1eafng, L\u00e0o Cai \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed theo kh\u1ed1i \u0111\u1ea7y \u0111\u1ee7 ng\u1eabu nhi\u00ean l\u1eb7p l\u1ea1i 3 l\u1ea7n. K\u1ebft qu\u1ea3 theo d\u00f5i sau 2 n\u0103m cho th\u1ea5y, ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng v\u00e0 k\u1ef9 thu\u1eadt t\u1ec9a c\u00e0nh \u0111\u00e3 c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y S\u1ed3i ph\u1ea3ng. V\u1ec1 ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng r\u1eebng S\u1ed3i ph\u1ea3ng h\u1ed7n giao v\u1edbi B\u1ed3 \u0111\u1ec1 cho t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 sinh tr\u01b0\u1edfng c\u1ee7a S\u1ed3i ph\u1ea3ng \u0111\u1ea1t t\u1ed1t h\u01a1n so v\u1edbi c\u00e1c ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng h\u1ed7n giao v\u1edbi Keo tai t\u01b0\u1ee3ng v\u00e0 tr\u1ed3ng thu\u1ea7n lo\u00e0i. Sau 2 n\u0103m tr\u1ed3ng S\u1ed3i ph\u1ea3ng tr\u1ed3ng h\u1ed7n giao v\u1edbi B\u1ed3 \u0111\u1ec1 cho t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t 88,6%, \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c trung b\u00ecnh l\u00e0 5,2 cm v\u00e0 chi\u1ec1u cao trung b\u00ecnh l\u00e0 4,3 m. V\u1ec1 t\u1ec9a c\u00e0nh, k\u1ef9 thu\u1eadt t\u1ec9a to\u00e0n b\u1ed9 s\u1ed1 c\u00e0nh tr\u00ean 1\/3 \u0111o\u1ea1n th\u00e2n ph\u00eda d\u01b0\u1edbi v\u00e0 k\u1ebft h\u1ee3p t\u1ec9a c\u00e0nh so le ph\u00eda tr\u00ean \u0111\u1ebfn 2\/3 th\u00e2n c\u00e2y cho sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n S\u1ed3i ph\u1ea3ng t\u1ed1t h\u01a1n so v\u1edbi c\u00e1c k\u1ef9 thu\u1eadt t\u1ec9a kh\u00e1c. Th\u1eddi gian t\u1ec9a b\u1eaft \u0111\u1ea7u sau khi tr\u1ed3ng 6 th\u00e1ng v\u00e0 m\u1ed7i n\u0103m t\u1ec9a 2 l\u1ea7n, m\u1ed7i l\u1ea7n c\u00e1ch nhau 5 – 6 th\u00e1ng. Sau t\u1ec9a c\u00e0nh S\u1ed3i ph\u1ea3ng cho sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh \u0111\u1ea1t 4,7 cm v\u00e0 chi\u1ec1u cao trung b\u00ecnh l\u00e0 4,2 m. Th\u00ed nghi\u1ec7m sau 2 n\u0103m t\u1ea1i B\u1ea3o Th\u1eafng, L\u00e0o Cai cho th\u1ea5y S\u1ed3i ph\u1ea3ng sinh tr\u01b0\u1edfng t\u1ed1t v\u00e0 r\u1ea5t c\u00f3 tri\u1ec3n v\u1ecdng \u0111\u1ec3 cung c\u1ea5p g\u1ed7 l\u1edbn trong t\u01b0\u01a1ng lai.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng, t\u1ec9a c\u00e0nh, S\u1ed3i ph\u1ea3ng, L\u00e0o Cai<\/td>\n<\/tr>\n

\n

<\/a>Effects of planting practises and pruning on the growth of Castanopsis cerebrina<\/em> species in Lao Cai<\/strong><\/p>\n

Experiments to study the effect of planting practises and pruning methods on the growth of Castanopsis cerebrina<\/em> in Bao Thang, Lao Cai were arranged in a randomized complete block with 3 repetitions. The results of monitoring after 2 years showed that, the planting practises and pruning technique influenced on the growth and quality of C. cerebrina<\/em>. Regarding the mixed planting practises of C. cerebrina<\/em> with Styrax tonkinensis<\/em>, the survival and growth rate of C. cerebrina<\/em> is better than the mixed planting practises with Acacia mangium<\/em> and pure plantation. After 2 years of planting mixed C. cerebrina<\/em> with Styrax tonkinensis<\/em>, the survival rate of C. cerebrina<\/em> was 88.6%, the average diameter at breast height was 5.2 cm and the average height was 4.3 m. Regarding pruning, the technique of pruning the entire number of branches on the lower 1\/3 of the stem and the combination of staggered pruning up to 2\/3 of the stem for growth and quality of C. cerebrina<\/em> is better than other pruning techniques. Pruning time begins 6 months after planting and prunes twice a year, each time 5 – 6 months apart. Pruning by this method after 2 years of age gives an average diameter of C. cerebrina<\/em> of 4.7 cm and an average height of 4.2 m. After 2 years of planting C. cerebrina<\/em> in the two experiments mentioned above in Bao Thang, Lao Cai province, it shows that the C. cerebrina<\/em> species grows well and is very promising to provide timber in the future.<\/p>\n

Keywords:<\/em><\/strong> Pruning, planting practises, Castanopsis cerebrina<\/em>, Lao Cai<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>K\u1ebeT QU\u1ea2 TUY\u1ec2N CH\u1eccN C\u00c2Y M\u1eb8 V\u00c0 TR\u1ed2NG TH\u1eec NGHI\u1ec6M
\nN\u0102M LO\u00c0I C\u00c2Y<\/u> B\u1ea2N \u0110\u1ecaA T\u1ea0I V\u01af\u1edcN QU\u1ed0C GIA BA V\u00cc
\nC\u00d3 TI\u1ec0M N\u0102NG TR\u1ed2NG R\u1eeaNG G\u1ed6 L\u1edaN<\/u><\/p>\n

<\/a>Tr\u1ea7n Minh Tu\u1ea5n1<\/sup>, \u0110\u1ed7 H\u1eefu Huy1<\/sup>, Chu Ng\u1ecdc Qu\u00e2n1<\/sup>,
\nPh\u00f9ng Anh T\u00e0i1<\/sup>, Ph\u1ea1m \u0110\u00ecnh S\u00e2m2<\/sup>, H\u1ed3 Trung L\u01b0\u01a1ng2<\/sup>,
\nNguy\u1ec5n H\u1eefu Th\u1ecbnh2<\/sup>, D\u01b0\u01a1ng Quang Trung2<\/sup>, Ho\u00e0ng Thanh S\u01a1n2<\/sup><\/p>\n

1 <\/sup>V\u01b0\u01a1\u0300n Qu\u00f4\u0301c gia Ba Vi\u0300
\n2 <\/sup>Vi\u00ea\u0323n Nghi\u00ean c\u01b0\u0301u L\u00e2m sinh<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 tuy\u00ea\u0309n ch\u1ecdn c\u00e2y m\u1eb9 cho 5 lo\u00e0i c\u00e2y (M\u1ee1 h\u1ea3i nam, D\u1ebb \u0111\u1ea5u n\u1ee9t, Tr\u01b0\u01a1ng v\u00e2n, S\u1ed3i \u0111\u1ea5u to, V\u00e0ng tr\u1eafng anderson) va\u0300 \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 10 c\u00e2y m\u1eb9 t\u1eeb 27 c\u00e2y d\u1ef1 tuy\u1ec3n. Sau 12 th\u00e1ng tr\u1ed3ng th\u1eed nghi\u1ec7m 5 lo\u00e0i c\u00e2y n\u00e0y trong c\u00e1c th\u00ed nghi\u1ec7m cho t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t tr\u00ean 85%. K\u1ebft qu\u1ea3 so s\u00e1nh sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao theo ti\u00eau chu\u1ea9n Duncan cho th\u1ea5y trong 5 lo\u00e0i th\u00ec M\u1ee1 h\u1ea3i nam c\u00f3 sinh tr\u01b0\u1edfng l\u1edbn nh\u1ea5t, ti\u1ebfp theo l\u00e0 Tr\u01b0\u01a1ng v\u00e2n v\u00e0 V\u00e0ng tr\u1eafng anderson. Sau 12 th\u00e1ng trong th\u00ed nghi\u1ec7m ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng M\u1ee1 h\u1ea3i nam c\u00f3 D00<\/sub> = 1,19 cm; Hvn<\/sub> = 1,06 m; Tr\u01b0\u01a1ng v\u00e2n c\u00f3 D00<\/sub> = 0,84 cm; Hvn<\/sub> = 0,94 m; V\u00e0ng tr\u1eafng anderson c\u00f3 D00<\/sub> = 0,75 cm; Hvn<\/sub> = 0,83 m. Trong th\u00ed nghi\u1ec7m b\u00f3n ph\u00e2n M\u1ee1 h\u1ea3i nam c\u00f3 D00<\/sub> = 0,88 cm; Hvn<\/sub> = 0,94 m; Tr\u01b0\u01a1ng v\u00e2n c\u00f3 D00<\/sub> = 0,72 cm; Hvn<\/sub> = 0,85 m; V\u00e0ng tr\u1eafng anderson c\u00f3 D00<\/sub> = 0,61 cm; Hvn<\/sub> = 0,83m. T\u1ea1i th\u00ed nghi\u1ec7m ti\u00eau chu\u1ea9n c\u00e2y con sau 18 th\u00e1ng sinh tr\u01b0\u1edfng c\u1ee7a M\u1ee1 h\u1ea3i nam \u0111\u1ea1t D00<\/sub> = 1,32 cm; Hvn<\/sub> = 1,20 m; Tr\u01b0\u01a1ng v\u00e2n c\u00f3 D00<\/sub> = 0,90 cm; Hvn<\/sub> = 1,08 m v\u00e0 V\u00e0ng tr\u1eafng anderson \u0111\u1ea1t D00<\/sub> = 0,82 cm; Hvn<\/sub> = 0,88 m. \u0110\u00e2y l\u00e0 3 lo\u00e0i c\u00e2y c\u00f3 ti\u00ea\u0300m n\u0103ng t\u1eeb V\u01b0\u1eddn Qu\u1ed1c gia Ba V\u00ec nh\u1eb1m b\u1ed5 sung danh m\u1ee5c c\u00e2y tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u00e2y b\u1ea3n \u0111\u1ecba, c\u00e2y m\u1eb9<\/u>, g\u1ed7 l\u1edbn<\/u>, V\u01b0\u1eddn Qu\u1ed1c gia Ba V\u00ec<\/td>\n<\/tr>\n

\n

<\/a>Results of selection of original ortets and experimental planting of 5 prospective indigenous species for sawlog development in Ba Vi National Park<\/strong><\/p>\n

Based on the selection of 5 tree species with high prospective for sawlog development in Ba Vi National Park, the study has selected 10 mother trees from 27 candidates of 5 tree species: Manglietia fordiana<\/em> Oliv. var. hainanensis (Dandy) N.H. Xia; Castanopsis fissa<\/em> (Champion ex Bentham) Rehder & E. H. Wilson; Toona sureni (Blume) Merrill; Quercus macrocalyx<\/em> Hickel & A. Camus; Alseodaphne andersonii<\/em> (King ex Hook.f.) Kosterm. After 12 months of experimental planting, the overall survival rate reached over 85%. The results of comparing average diameter and height according to Duncan standard showed that M. fordiana<\/em> had the highest growth rate, followed by Toona sureni<\/em> (Blume) Merrill and Alseodaphne andersonii<\/em> (King ex Hook.f.) Kosterm. In the planting method experiment, Manglietia fordiana<\/em> had D00<\/sub> = 1.19cm, Hvn<\/sub> = 1.06 m; Toona sureni<\/em> had D00<\/sub> = 0.84cm; Hvn<\/sub> = 0.94m; Alseodaphne andersonii<\/em> had D00<\/sub> = 0.75 cm; Hvn<\/sub> = 0.83m. In the fertilizing experiment, Manglietia fordiana<\/em> had D00<\/sub> = 0.88cm, Hvn<\/sub> = 0.94m; Toona sureni<\/em> had D00<\/sub> = 0.72cm, Hvn<\/sub> = 0.85m; Alseodaphne andersonii<\/em> had D00<\/sub> = 0.61cm, Hvn<\/sub> = 0.83m. In the seedling standard experiment, after 18 months, Manglietia fordiana<\/em> had D00<\/sub> = 1.32cm; Hvn<\/sub> = 1.20m; Toona sureni<\/em> had D00<\/sub> = 0.90cm; Hvn<\/sub> = 1.08m; Alseodaphne andersonii <\/em>had D00<\/sub> = 0.82cm; Hvn<\/sub> = 0.88m. These were 3 species selected to conduct further studies on the possibility of sawlog afforestation in Ba Vi National Park.<\/p>\n

Keywords:<\/em><\/strong> Indigenous species, mother tree, sawlog, Ba Vi National Park<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u1ee8NG D\u1ee4NG C\u00d4NG NGH\u1ec6 GIS V\u00c0 FAHP TRONG QUY HO\u1ea0CH
\nPH\u00c1T TRI\u1ec2N R\u1eeaNG TR\u1ed2NG HU\u1ef6NH (Tarri<\/em>etia javanica <\/em>Blume)<\/em>
\nT\u1ea0I T\u1ec8NH QU\u1ea2NG TR\u1eca<\/p>\n

<\/a>V\u0169 \u0110\u1ee9c B\u00ecnh1<\/sup>, Nguy\u1ec5n V\u0103n L\u1ee3i2<\/sup>, Ph\u1ea1m Xu\u00e2n \u0110\u1ec9nh1<\/sup>, Nguy\u1ec5n Th\u1ecb Th\u1ea3o Trang1<\/sup>,
\nNguy\u1ec5n Th\u1ecb Thanh Nga1<\/sup>, Nguy\u1ec5n H\u1ea3i Th\u00e0nh1<\/sup>, L\u00ea C\u00f4ng \u0110\u1ecbnh1<\/sup><\/p>\n

1<\/sup>Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p B\u1eafc Trung B\u1ed9
\n2<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m, \u0110\u1ea1i h\u1ecdc Hu\u1ebf<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u n\u00e0y x\u00e1c \u0111\u1ecbnh v\u00f9ng \u0111\u1ea5t ph\u00f9 h\u1ee3p cho lo\u00e0i c\u00e2y Hu\u1ef7nh (Tarrietia<\/em> javanica<\/em>) nh\u1eb1m cung c\u1ea5p c\u01a1 s\u1edf khoa h\u1ecdc cho vi\u1ec7c quy ho\u1ea1ch ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng lo\u00e0i c\u00e2y n\u00e0y t\u1ea1i t\u1ec9nh Qu\u1ea3ng Tr\u1ecb. Ph\u01b0\u01a1ng ph\u00e1p c\u1ee7a nghi\u00ean c\u1ee9u l\u00e0 t\u00edch h\u1ee3p c\u00e1c l\u1edbp nh\u00e2n t\u1ed1 sinh th\u00e1i \u1ea3nh h\u01b0\u1edfng th\u00f4ng qua m\u00f4 h\u00ecnh ph\u1ed1i h\u1ee3p tuy\u1ebfn t\u00ednh c\u00f3 tr\u1ecdng s\u1ed1 trong GIS \u0111\u1ec3 thi\u1ebft l\u1eadp b\u1ea3n \u0111\u1ed3 ph\u00f9 h\u1ee3p cho lo\u00e0i c\u00e2y Hu\u1ef7nh \u1edf t\u1ec9nh Qu\u1ea3ng Tr\u1ecb. Nghi\u00ean c\u1ee9u \u0111\u00e3 s\u1eed d\u1ee5ng ti\u1ebfn tr\u00ecnh ph\u00e2n t\u00edch th\u1ee9 b\u1eadc m\u1edd FAHP (Fuzzy<\/em> Analytic Hierarchy Process<\/em>) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh tr\u1ecdng s\u1ed1 c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1 sinh th\u00e1i c\u00f9ng v\u1edbi k\u1ebft qu\u1ea3 ph\u00e2n lo\u1ea1i t\u01b0 li\u1ec7u \u1ea3nh v\u1ec7 tinh Landsat 8 OLI ch\u1ee5p th\u00e1ng 2 n\u0103m 2022 v\u00e0 s\u1ed1 li\u1ec7u \u0111i\u1ec1u tra tr\u00ean th\u1ef1c \u0111\u1ecba. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, di\u1ec7n t\u00edch \u0111\u1ea5t \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 ph\u00f9 h\u1ee3p cho lo\u00e0i c\u00e2y Hu\u1ef7nh l\u00e0 77.290 ha (chi\u1ebfm 16,44% t\u1ed5ng di\u1ec7n t\u00edch t\u1ef1 nhi\u00ean). Di\u1ec7n t\u00edch \u0111\u1ec1 xu\u1ea5t quy ho\u1ea1ch ti\u1ec1m n\u0103ng tr\u1ed3ng r\u1eebng Hu\u1ef7nh t\u1ea1i Qu\u1ea3ng Tr\u1ecb theo m\u1ee9c \u0111\u1ed9 \u01b0u ti\u00ean 1 (ti\u1ebfp c\u1eadn m\u1ea1ng l\u01b0\u1edbi \u0111\u01b0\u1eddng \u2264 2.000 m) l\u00e0 48.796 ha (chi\u1ebfm 10,38%); m\u1ee9c \u0111\u1ed9 \u01b0u ti\u00ean 2 (ti\u1ebfp c\u1eadn m\u1ea1ng l\u01b0\u1edbi \u0111\u01b0\u1eddng t\u1eeb > 2.000 m \u0111\u1ebfn 4.000 m) l\u00e0 23.057 ha (chi\u1ebfm 4,9%) v\u00e0 m\u1ee9c \u0111\u1ed9 \u01b0u ti\u00ean 3 (ti\u1ebfp c\u1eadn m\u1ea1ng l\u01b0\u1edbi \u0111\u01b0\u1eddng t\u1eeb > 4.000 m \u0111\u1ebfn 6.000 m) l\u00e0 5.437 ha (chi\u1ebfm 1,16%).<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> FAHP, GIS, c\u00e2y Hu\u1ef7nh<\/td>\n<\/tr>\n

\n

<\/a>Application of GIS technology and FAHP method in development planning of Tarri<\/em>etia javanica <\/em>plantation in Quang Tri province<\/p>\n

The study is to identify of land suitabilty for Tarrietia<\/em> javanica <\/em>to provide a scientific basis for the sustainable forest management and development of this tree species in Quang Tri province. The method of the study was to integrate the influenced ecological factors by applying the weighted linear combination (WLC) model in GIS to establish a land suitability map for Tarrietia<\/em> javanica <\/em>in Quang Tri province. The study determined the weights of ecological factors by using the Fuzzy Analytic Hierarchy Process (FAHP) combined with the classification of the Landsat 8 OLI images taken in February 2022, and field survey data. The results showed that the land suitabilty area of Tarrietia<\/em> javanica <\/em>is 77,290 ha (accounted for 16.44% of the total natural area); The potential area for afforestation of Tarrietia javanica<\/em> in Quang Tri according to priority levels: lever 1 (accessibility to road network \u2264 2,000 m), level 2 (accessibility to road network from > 2,000 m to 4,000 m), and level 3 (accessibility to road network from > 4,000 m to 6,000 m) was 48,796 ha (accounting for 10.38%); 23,057 ha (4.9%) and 5,437 ha (1.16%), respectively.<\/p>\n

Keywords:<\/em><\/strong> FAHP, GIS, Tarrietia javanica<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>THU H\u1ed2I LIGNIN B\u1eb0NG AXIT SUNPHURIC
\nT\u1eea NH\u00c0 M\u00c1Y B\u1ed8T GI\u1ea4Y SUNPH\u00c1T V\u00c0 S\u1eec D\u1ee4NG T\u1ed4NG H\u1ee2P KEO LIGNIN – PHENOL – FORMADYHYDE<\/p>\n

<\/a>Ho\u00e0ng V\u0103n Phong1<\/sup>, B\u00f9i Duy Ng\u1ecdc1<\/sup>, \u0110o\u00e0n Th\u1ecb B\u00edch Ng\u1ecdc1<\/sup>,
\nHo\u00e0ng Th\u1ecb T\u00e1m1<\/sup>, Phan Huy Ho\u00e0ng2<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup> \u0110\u1ea1i h\u1ecdc B\u00e1ch khoa H\u00e0 N\u1ed9i<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Lignin trong d\u1ecbch \u0111en hi\u1ec7n nay \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m nguy\u00ean li\u1ec7u \u0111\u1ed1t cho nh\u1eefng l\u00f2 gia nhi\u1ec7t trong nh\u1eefng nh\u00e0 m\u00e1y b\u1ed9t sunphat. Tuy nhi\u00ean, m\u1ed9t ph\u1ea7n lignin c\u00f3 trong d\u1ecbch \u0111en c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thu h\u1ed3i v\u00e0 \u1ee9ng d\u1ee5ng trong m\u1ed9t s\u1ed1 ng\u00e0nh c\u00f4ng nghi\u1ec7p. Trong qu\u00e1 tr\u00ecnh thu h\u1ed3i, ax\u00edt H2<\/sub>SO4 <\/sub>\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thay \u0111\u1ed5i pH c\u1ee7a d\u1ecbch \u0111en t\u1eeb \u0111\u00f3 l\u00e0m k\u1ebft t\u1ee7a lignin. Lignin k\u1ebft t\u1ee7a ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c r\u1eeda b\u1eb1ng H2<\/sub>SO4<\/sub> v\u00e0 n\u01b0\u1edbc \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c t\u1ea1p ch\u1ea5t. M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a nghi\u00ean c\u1ee9u n\u00e0y l\u00e0 nghi\u00ean c\u1ee9u thu h\u1ed3i lignin v\u00e0 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t thu h\u1ed3i lignin k\u1ebft t\u1ee7a t\u1eeb d\u1ecbch \u0111en v\u00e0 sau \u0111\u00f3 x\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u1ee7a lignin thu \u0111\u01b0\u1ee3c. S\u1ef1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a m\u1ed9t s\u1ed1 th\u00f4ng s\u1ed1 quan tr\u1ecdng nh\u01b0 pH, nhi\u1ec7t \u0111\u1ed9 v\u00e0 n\u1ed3ng \u0111\u1ed9 c\u1ee7a axit sunphuric \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a lignin k\u1ebft t\u1ee7a \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u. K\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c t\u1eeb th\u1ef1c nghi\u1ec7m ch\u1ec9 ra r\u1eb1ng v\u1edbi pH = 2, nhi\u1ec7t \u0111\u1ed9 85o<\/sup>C v\u00e0 n\u1ed3ng \u0111\u1ed9 ax\u00edt sunphuric 35% cho hi\u1ec7u su\u1ea5t thu h\u1ed3i lignin t\u1eeb d\u1ecbch \u0111en l\u00e0 33,94%. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 m\u00e1y ph\u00e2n t\u00edch ph\u1ed5 FTIR, k\u1ebft qu\u1ea3 ph\u00e2n t\u00edch cho th\u1ea5y c\u00e1c nh\u00f3m ch\u1ee9c gi\u1eefa c\u00e1c ch\u1ebf \u0111\u1ed9 thu h\u1ed3i ho\u00e0n to\u00e0n gi\u1ed1ng nhau.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> D\u1ecbch \u0111en, lignin, ph\u1ed5 FTIR<\/td>\n<\/tr>\n

\n

<\/a>Recovery lignin by aciad sulfile form kraft pulp mill and use for Lignin – Phenol- Formadyhyde adhensive synthesis<\/strong><\/p>\n

Lignin in black liquor, which is currently burned to recover in boiler in the Kraft pulping mills. However, a part of lignin in black liquor can be recovered and using in some industrial field. In this process, the black liquor is extracted from acid sulfide to precipitate the lignin. The precipitated lignin is washed with H2<\/sub>SO4<\/sub> and water to remove impurities. The primary objective of the work in this research was to investigate the fundamentals of lignin precipitation in black liquor and, more specifically, the yield of the lignin precipitation and some properties of lignin. The influences of some important process parameters such as pH, temperature, and concentration of acid on the yield of lignin precipitation were investigated. The results research with pH = 2, temperature 85o<\/sup>C and concentration of acid sulfuric of 35% gave the precipitation yield of lignin were 33.94%. The analytical methods used were FTIR spectroscopy, and analysis result revealed that the functional groups of parameters extracted were similar to each other.<\/p>\n

Keywords:<\/em><\/strong> Black liquor, lignin, FTIR spectro<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U T\u00cdNH CH\u1ea4T C\u01a0, V\u1eacT L\u00dd V\u00c0 KH\u1ea2 N\u0102NG GIA C\u00d4NG
\nG\u1ed6 D\u1eba CAU (Quercus platycalyx <\/em>Hickel & A. Camus)
\nPH\u1ee4C V\u1ee4 CH\u1ebe BI\u1ebeN<\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb Tr\u1ecbnh1<\/sup>, Nguy\u1ec5n V\u0103n Th\u1ecd2<\/sup>, Nguy\u1ec5n B\u1ea3o Ng\u1ecdc1<\/sup>, Nguy\u1ec5n Tr\u1ecdng Ngh\u0129a1<\/sup><\/p>\n

1 <\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng
\n2 <\/sup>Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p v\u00f9ng Trung t\u00e2m B\u1eafc B\u1ed9<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

D\u1ebb cau (Quercus platycalyx <\/em>Hickel & A. Camus) l\u00e0 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba c\u00f3 gi\u00e1 tr\u1ecb cao v\u1ec1 kinh t\u1ebf, sinh th\u00e1i v\u00e0 m\u00f4i tr\u01b0\u1eddng, ph\u00e2n b\u1ed1 \u1edf nhi\u1ec1u v\u00f9ng sinh th\u00e1i kh\u00e1c nhau \u1edf Vi\u1ec7t Nam. Tuy nhi\u00ean, cho t\u1edbi nay g\u1ed7 D\u1ebb cau v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u v\u00e0 \u0111\u00e1nh gi\u00e1 c\u00e1c \u0111\u1eb7c t\u00ednh v\u1edbi m\u1ee5c \u0111\u00edch ph\u1ee5c v\u1ee5 cho nhu c\u1ea7u g\u1ed7 x\u1ebb. Trong nghi\u00ean c\u1ee9u n\u00e0y \u0111\u00e3 \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng g\u1ed7 D\u1ebb cau \u1edf \u0111\u1ed9 tu\u1ed5i 30 ph\u1ee5c v\u1ee5 y\u00eau c\u1ea7u g\u1ed7 x\u1ebb l\u00e0m nguy\u00ean li\u1ec7u cho s\u1ea3n xu\u1ea5t \u0111\u1ed3 m\u1ed9c \u1edf 2 n\u1ed9i dung: (1) X\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 v\u1eadt l\u00fd c\u01a1 b\u1ea3n; (2) \u0110\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng gia c\u00f4ng c\u1ee7a g\u1ed7 D\u1ebb cau. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y g\u1ed7 D\u1ebb cau t\u01b0\u01a1ng \u0111\u01b0\u01a1ng g\u1ed7 nh\u00f3m V. C\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a g\u1ed7 \u1edf m\u1ee9c trung b\u00ecnh \u0111\u1ebfn th\u1ea5p, v\u00ec v\u1eady g\u1ed7 ph\u00f9 h\u1ee3p s\u1eed d\u1ee5ng trong nh\u1eefng c\u1ea5u ki\u1ec7n c\u00f3 y\u00eau c\u1ea7u ch\u1ecbu l\u1ef1c trung b\u00ecnh v\u00e0 th\u1ea5p. K\u1ebft qu\u1ea3 v\u1ec1 kh\u1ea3 n\u0103ng gia c\u00f4ng cho th\u1ea5y ch\u1ea5t l\u01b0\u1ee3ng gia c\u00f4ng c\u1ee7a g\u1ed7 D\u1ebb cau \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u nguy\u00ean li\u1ec7u trong s\u1ea3n xu\u1ea5t \u0111\u1ed3 m\u1ed9c.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> D\u1ebb cau, t\u00ednh ch\u1ea5t v\u1eadt l\u00fd, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc, kh\u1ea3 n\u0103ng gia c\u00f4ng<\/td>\n<\/tr>\n

\n

<\/a>Study on the physical and mechanical properties and machinability of Quercus platycalyx <\/em>Hickel & A. Camus used for wood products processing<\/strong><\/p>\n

Quercus playtycalyx<\/em> Hickel & A. Camus is a native species with economic, ecological and environmental significance, distributed at several different ecological regions in Vietnam. However, the species has not been studied for the aim of sawn timber uses. In this study, the wood qualities of Quercus platycalyx <\/em>Hickel & A. Camus at the age of 30 years olds was assessed for the use of sawn timber as raw materials for joinery production at two aspects: (1) Determination of some basic physical and mechanical properties and (2) Evaluation of the machinability of the wood. Results showed that Quercus platycalyx <\/em>Hickel & A. Camus wood was classified as the wood of group V. The mechanical properties of the wood were medium to low, thus the wood could be used for structural elements with medium and low load-bearing requirements. The machinability indicated that the species met the requirements of raw materials for the joinery production.<\/p>\n

Keywords:<\/em><\/strong> Quercus playtycalyx<\/em> Hickel & A. Camus, physical properties, mechanical properties, machinability<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M C\u1ea4U T\u1ea0O \u0110\u1eb6C BI\u1ec6T \u0110\u1ec2 NH\u1eacN BI\u1ebeT
\nG\u1ed6 B\u1eb0NG L\u0102NG Lagerstroemia calyculata<\/em> Kurz
\nV\u00c0 G\u1ed6 S\u1ebeN M\u1ee6 Shorea roxburgii<\/em> G.Don<\/p>\n

<\/a>V\u0169 Th\u1ecb H\u1ed3ng Th\u1eafm, L\u01b0u Qu\u1ed1c Th\u00e0nh, V\u0169 Th\u1ecb Ngoan, B\u00f9i H\u1eefu Th\u01b0\u1edfng<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

M\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u t\u1ea1o th\u00f4 \u0111\u1ea1i v\u00e0 hi\u1ec3n vi n\u1ed5i b\u1eadt hai lo\u00e0i g\u1ed7 B\u1eb1ng l\u0103ng (Lagerstroemia calyculata<\/em> Kurz) v\u00e0 g\u1ed7 S\u1ebfn m\u1ee7 (Shorea roxburgii<\/em> G.Don) \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0m c\u0103n c\u1ee9 \u0111\u1ec3 nh\u1eadn bi\u1ebft g\u1ed7. G\u1ed7 B\u1eb1ng l\u0103ng c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m \u0111\u00e1ng ch\u00fa \u00fd: G\u1ed7 d\u00e1c v\u00e0 g\u1ed7 l\u00f5i ph\u00e2n bi\u1ec7t; tr\u00ean m\u1eb7t c\u1eaft ngang c\u00f3 nhi\u1ec1u v\u1ebft t\u1ee7y, d\u1ec5 th\u1ea5y; th\u1edb g\u1ed7 m\u1ecbn, th\u1eb3ng th\u1edb; g\u1ed7 c\u1ee9ng, n\u1eb7ng; M\u1ea1ch \u0111\u01a1n v\u00e0 k\u00e9p ng\u1eafn (2 – 4 m\u1ea1ch), m\u1ea1ch g\u1ed7 ph\u00e2n b\u1ed1 theo ki\u1ec3u ph\u00e2n t\u00e1n, m\u1ea1ch n\u1eeda v\u00f2ng v\u1edbi s\u1ed1 l\u01b0\u1ee3ng kho\u1ea3ng 10 m\u1ea1ch\/mm2<\/sup>; Tia g\u1ed7 nh\u1ecf, th\u01b0\u1eddng tia 1 d\u00e3y t\u1ebf b\u00e0o; L\u1ed7 th\u00f4ng ngang gi\u1eefa c\u00e1c \u1ed1ng m\u1ea1ch l\u00e0 l\u1ed7 th\u00f4ng ngang \u0111\u01a1n, c\u00f3 v\u00e1ch, s\u1eafp x\u1ebfp theo d\u1ea1ng sole; c\u00f3 tinh th\u1ec3 h\u00ecnh l\u0103ng tr\u1ee5 trong s\u1ee3i g\u1ed7 v\u00e0 trong ng\u0103n c\u1ee7a t\u1ebf b\u00e0o m\u00f4 m\u1ec1m, s\u1ee3i g\u1ed7 c\u00f3 v\u00e1ch ng\u0103n. G\u1ed7 S\u1ebfn m\u1ee7 c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m ch\u00fa \u00fd: G\u1ed7 d\u00e1c v\u00e0 l\u00f5i ph\u00e2n bi\u1ec7t; V\u00f2ng n\u0103m kh\u00f4ng r\u00f5 r\u00e0ng, tr\u00ean m\u1eb7t c\u1eaft ngang c\u00f3 th\u1ea5y \u1ed1ng d\u1eabn nh\u1ef1a l\u00e0m th\u00e0nh d\u1ea3i theo h\u01b0\u1edbng ti\u1ebfp tuy\u1ebfn; M\u1eb7t g\u1ed7 th\u00f4, ch\u00e9o th\u1edb; G\u1ed7 c\u1ee9ng v\u00e0 n\u1eb7ng; M\u1ea1ch \u0111\u01a1n v\u00e0 k\u00e9p ng\u1eafn, ph\u00e2n b\u1ed1 ph\u00e2n t\u00e1n, trong m\u1ea1ch c\u00f3 ch\u1ea5t ch\u1ee9a m\u00e0u tr\u1eafng ho\u1eb7c m\u00e0u n\u00e2u th\u1eabm; Tia g\u1ed7 nh\u1ecf, m\u1eadt \u0111\u1ed9 cao, tia d\u1ecb h\u00ecnh. C\u00f3 tinh th\u1ec3 oxalat ph\u00e2n t\u00e1n r\u1ea3i r\u00e1c trong tia; T\u1ebf b\u00e0o m\u00f4 m\u1ec1m v\u00e2y quanh m\u1ea1ch theo h\u00ecnh c\u00e1nh v\u00e0 li\u00ean k\u1ebft th\u00e0nh gi\u1ea3i h\u1eb9p, ng\u1eafn, d\u00e0i theo h\u01b0\u1edbng ti\u1ebfp tuy\u1ebfn; L\u1ed7 th\u00f4ng ngang \u0111\u01a1n, s\u1eafp x\u1ebfp sole, l\u1ed7 th\u00f4ng ngang gi\u1eefa m\u1ea1ch v\u00e0 tia l\u1edbn h\u01a1n l\u1ed7 th\u00f4ng ngang gi\u1eefa m\u1ea1ch g\u1ed7.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u1ea5u t\u1ea1o g\u1ed7, nh\u1eadn d\u1ea1ng g\u1ed7, B\u1eb1ng l\u0103ng, S\u1ebfn m\u1ee7<\/td>\n<\/tr>\n

\n

<\/a>Some special characteristics and special chemical compositions to identify Lagerstroemia calyculata<\/em> Kurz and Shorea roxburgii<\/em> G.Don<\/strong><\/p>\n

This article presents outstanding macroscopic and microscopic features to help identifying two imported wood species including Lagerstroemia calyculata<\/em> Kurz and Shorea roxburgii<\/em> G.Don. The first species has the following significantly characteristics: Sapwood colour distinct from heartwood colour; on the cross section there are many stains, easy to see; smooth, straight grain of wood; hard, heavy wood; Vessels in solitary and multiples, commonly in short (2 – 4 vessels) radial rows; Wood\u00a0ring porous or semi ring porous with number of 10 vessels\/mm2<\/sup>; small rays, usually exclusively uniseriate; Vessel-ray pits\u00a0with reduced borders or apparently simple, arranged in sole form; Crystals present, prismatic, located in fibres and in chambered axial parenchyma cells, fibres\u00a0exclusively septate. The second species has the following notable characteristics: Sapwood colour\u00a0distinct from heartwood colour; the annual ring is not clear, the strips of oil cells in the tangent direction on the cross section; rough wood surface, inclined grain; hard and heavy wood; Vessels are exclusively solitary and multiples, diffuse porous, containing white or dark brown deposites in the vessels; narrow rays, irregular rays; There are scattered oxalate crystals in the rays; Parenchyma bounding the vesselsin the form of the winged type or continous winged type, and combining into the narrow, short, long strips in the tangential direction; Perforation plates simple, sole intervessel pits. Vessel-ray pits greater than vessels -vessel pits.<\/p>\n

Keywords:<\/em><\/strong> Wood anatomy, wood indentification, Lagerstroemia calyculata<\/em> Kurz, Shorea roxburgii<\/em> G.Don<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 6 – 2022 1. Nghi\u00ean c\u1ee9u ch\u1ecdn l\u1ecdc d\u00f2ng v\u00f4 t\u00ednh Keo l\u00e1 tr\u00e0m sinh tr\u01b0\u1edfng nhanh cho v\u00f9ng \u0110\u00f4ng Nam B\u1ed9 Selection of fast growing Acacia auriculiformis for planting in the Southeast Vietnam Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean Ng\u00f4 V\u0103n Ch\u00ednh D\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n 5 2. Nghi\u00ean c\u1ee9u \u0111a […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[26,24,45],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2447"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/comments?post=2447"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2447\/revisions"}],"predecessor-version":[{"id":2451,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2447\/revisions\/2451"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=2447"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=2447"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=2447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}