{"id":2185,"date":"2020-11-30T11:57:09","date_gmt":"2020-11-30T04:57:09","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=2185"},"modified":"2023-11-23T12:24:52","modified_gmt":"2023-11-23T05:24:52","slug":"vietnam-journal-of-forest-science-number-4-2020","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2020\/11\/vietnam-journal-of-forest-science-number-4-2020\/","title":{"rendered":"Vietnam Journal of Forest Science Number 4-2020"},"content":{"rendered":"

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<\/a><\/a><\/a>T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 4<\/strong> – <\/strong>20<\/strong>20<\/strong><\/p>\n

\u00a0<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
1.<\/td>\nNghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng c\u00e2y Ba k\u00edch
\n(Morinda officinalis<\/em> How)
\nt\u1ea1i B\u1eafc Giang<\/td>\n		Study on propagation techniques of Morinda officinalis<\/em> How in Bac Giang<\/td>\nKim Ng\u1ecdc Quang
\nNguy\u1ec5n Mai Th\u01a1m
\nV\u00f5 \u0110\u1ea1i H\u1ea3i<\/td>\n		3<\/td>\n<\/tr>\n
2.<\/td>\nK\u1ebft qu\u1ea3 ch\u1ecdn c\u00e2y tr\u1ed9i qu\u1ebf
\nt\u1ea1i Y\u00ean B\u00e1i v\u00e0 L\u00e0o Cai<\/td>\n		Results of selecting plus tree Cinnamomum cassia<\/em> in Yen Bai and Lao Cai provinces<\/td>\nPhan V\u0103n Th\u1eafng
\nT\u1ea1 Minh Quang
\nNguy\u1ec5n Huy S\u01a1n
\nH\u00e0 V\u0103n N\u0103m
\nTr\u1ecbnh B\u00edch H\u1ea3o<\/td>\n		14<\/td>\n<\/tr>\n
3.<\/td>\nNghi\u00ean c\u1ee9u t\u00e1i sinh c\u00e2y keo lai (Acacia hybrid) th\u00f4ng qua m\u00f4 s\u1eb9o v\u00e0 ph\u00e1t sinh ph\u00f4i soma ph\u1ee5c v\u1ee5 chuy\u1ec3n gen<\/td>\nRegeneration of acacia hybrid through callus and somatic embryogenesis for gene transfer<\/td>\nNguy\u1ec5n Th\u1ecb Huy\u1ec1n
\nTr\u1ea7n Th\u1ecb Thu H\u00e0
\nH\u00e0 Th\u1ecb Huy\u1ec1n Ng\u1ecdc
\nNguy\u1ec5n Th\u1ecb Vi\u1ec7t H\u00e0
\nL\u00ea Th\u1ecb Thu\u1ef7
\nL\u00ea S\u01a1n<\/td>\n		30<\/td>\n<\/tr>\n
4.<\/td>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p l\u1ea5y m\u1eabu v\u00e0 t\u00e1ch chi\u1ebft \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng ADN t\u1ed5ng s\u1ed1 c\u1ee7a lo\u00e0i B\u00e1ch v\u00e0ng (Xanthocyparis vietnamensis<\/em> Farjon & N.T.Hiep) ph\u1ee5c v\u1ee5 c\u00f4ng t\u00e1c nghi\u00ean c\u1ee9u b\u1ea3o t\u1ed3n v\u00e0 ph\u00e1t tri\u1ec3n ngu\u1ed3n gen<\/td>\nThe effects of sampling method and extraction method on DNA quality of Xanthocyparis vietnamensis<\/em> for genetic source conservation of precious and rare forest vegetation<\/td>\nH\u00e0 Th\u1ecb Huy\u1ec1n Ng\u1ecdc
\nNguy\u1ec5n Th\u1ecb Huy\u1ec1n
\nTr\u1ea7n Th\u1ecb Thu H\u00e0
\nNguy\u1ec5n Th\u1ecb Vi\u1ec7t H\u00e0
\nL\u00ea Th\u1ecb Th\u1ee7y
\nB\u00f9i Tr\u1ecdng Th\u1ee7y
\nNguy\u1ec5n C\u00f4ng Ph\u01b0\u01a1ng
\nL\u00ea S\u01a1n<\/td>\n		41<\/td>\n<\/tr>\n
5.<\/td>\n\u0110a d\u1ea1ng di truy\u1ec1n qu\u1ea7n th\u1ec3 c\u00e2y tr\u1ed9i Gi\u1ed5i \u0103n h\u1ea1t (Michelia tonkinensis <\/em>A.Chev.) \u1edf m\u1ed9t s\u1ed1 t\u1ec9nh ph\u00eda B\u1eafc Vi\u1ec7t Nam d\u1ef1a tr\u00ean ch\u1ec9 th\u1ecb SSR<\/td>\nGenetic diversity of the populations of Michelia tonkinensis <\/em>A. Chev. in some North provinces, Vietnam using SSR marker<\/td>\nTr\u1ea7n Th\u1ecb Li\u1ec5u
\n\u0110inh Th\u1ecb Ph\u00f2ng
\nNguy\u1ec5n V\u0103n H\u00f9ng<\/td>\n		50<\/td>\n<\/tr>\n
6.<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i v\u00e0 \u0111a d\u1ea1ng di truy\u1ec1n c\u1ee7a c\u00e1c gi\u1ed1ng c\u00e2y Ba k\u00edch (Morinda officinalis<\/em> How)<\/td>\nMorphological characteristics and genetic diversity of some varieties of Morinda officinalis <\/em>How<\/td>\nNg\u00f4 Th\u1ecb Thu Hi\u1ec1n
\nKim Ng\u1ecdc Quang
\nNguy\u1ec5n Mai Th\u01a1m<\/td>\n		62<\/td>\n<\/tr>\n
7.<\/td>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a t\u1ef7 l\u1ec7 che s\u00e1ng, ph\u00e2n NPK v\u00e0 k\u00edch th\u01b0\u1edbc t\u00fai b\u1ea7u t\u1edbi sinh tr\u01b0\u1edfng c\u1ee7a Tr\u00f4m
\n(Sterculia foetida<\/em> L.)
\n4 th\u00e1ng tu\u1ed5i trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m<\/td>\n		Effect of shading level, NPK fertilizer and pocket size on growth of Sterculia foetida<\/em> L. at 4 month of age in nursery<\/td>\nPh\u00f9ng V\u0103n Khang
\nPh\u00f9ng V\u0103n Khen
\nNinh V\u0103n Tu\u1ea5n
\nTr\u1ea7n \u0110\u1ee9c Th\u00e0nh<\/td>\n		73<\/td>\n<\/tr>\n
8.<\/td>\nM\u00f4 h\u00ecnh \u01b0\u1edbc t\u00ednh sinh kh\u1ed1i tr\u00ean m\u1eb7t \u0111\u1ea5t c\u00e2y r\u1eebng kh\u1ed9p \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh theo c\u00e1c nh\u00e2n t\u1ed1 sinh th\u00e1i v\u00e0 m\u00f4i tr\u01b0\u1eddng r\u1eebng<\/td>\nAllometric equation for estimating tree above ground biomass modified by ecological and forest environmetal factors in dipterocarp forests<\/td>\nNguy\u1ec5n Th\u1ecb T\u00ecnh
\nB\u1ea3o Huy<\/td>\n		79<\/td>\n<\/tr>\n
9.<\/td>\nTh\u1ef1c tr\u1ea1ng g\u00e2y tr\u1ed3ng v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m sinh tr\u01b0\u1edfng, t\u00e1i sinh c\u1ee7a c\u00e2y B\u1ea7n kh\u00f4ng c\u00e1nh (Sonneratia apetala <\/em>Buch.Ham) t\u1ea1i khu v\u1ef1c c\u1eeda s\u00f4ng H\u1ed3ng<\/td>\nNatural regeneration, growth characteristic and planting of Sonneratia apetala <\/em>Buch.Ham, the case study at Red river estuary<\/td>\nTr\u1ea7n V\u0103n S\u00e1ng
\nNg\u00f4 V\u0103n Chi\u1ec1u
\nTr\u1ea7n Th\u1ecb H\u1ed3ng H\u1ea1nh
\nTr\u1ea7n Th\u1ecb Thu Hi\u1ec1n
\nV\u0169 Qu\u1ed1c \u0110\u1ea1t
\nPhan V\u0103n Tr\u01b0\u1eddng<\/td>\n		90<\/td>\n<\/tr>\n
10.<\/td>\nNghi\u00ean c\u1ee9u kh\u1ea3 n\u0103ng ph\u00f2ng ch\u1ed1ng n\u1ea5m m\u1ed1c, n\u1ea5m m\u1ee5c c\u1ee7a v\u00e1n l\u1ea1ng g\u1ed7 D\u1ebb \u0111\u1ecf v\u00e0 v\u00e1n b\u00f3c g\u1ed7 B\u1eddi l\u1eddi v\u00e0ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd ch\u1ebf ph\u1ea9m b\u1ea3o qu\u1ea3n<\/td>\nStudying on the protective effectiveness of slice veneers from Lithocarpus ducampii<\/em> A. Camus and peeled veneers from Litsea pierrei<\/em> Lecomte treated with preservations against mold and basydiomycetes fungi<\/td>\nV\u00f5 \u0110\u1ea1i H\u1ea3i
\nB\u00f9i Th\u1ecb Th\u1ee7y
\n\u0110o\u00e0n Th\u1ecb B\u00edch Ng\u1ecdc
\nHo\u00e0ng Th\u1ecb T\u00e1m
\nNguy\u1ec5n Th\u1ecb H\u1eb1ng
\nB\u00f9i V\u0103n \u00c1i
\nNguy\u1ec5n V\u0103n \u0110\u1ee9c<\/td>\n		101<\/td>\n<\/tr>\n
11.<\/td>\n\u0110\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng g\u1ed7 c\u00e2y Chi\u00eau li\u00eau n\u01b0\u1edbc (Terminalia calamansanai<\/em> Rolfe)<\/td>\nAssessment of the possibility in wood utilization of Terminalia calamansanai <\/em>Rolfe<\/td>\nNguy\u1ec5n T\u1eed Kim
\nPh\u1ea1m Th\u1ebf D\u0169ng
\nNguy\u1ec5n Thanh Minh
\nNguy\u1ec5n Th\u1ecb Tr\u1ecbnh
\nNguy\u1ec5n Tr\u1ecdng Ngh\u0129a<\/td>\n		111<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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<\/a>NGHI\u00caN C\u1ee8U K\u1ef8 THU\u1eacT NH\u00c2N GI\u1ed0NG C\u00c2Y BA K\u00cdCH (Morinda officinalis <\/em>How) T\u1ea0I B\u1eaeC GIANG<\/p>\n

<\/a>Kim Ng\u1ecdc Quang1<\/sup>, Nguy\u1ec5n Mai Th\u01a1m2<\/sup>, V\u00f5 \u0110\u1ea1i H\u1ea3i3<\/sup><\/p>\n

1<\/sup>NCS Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup>H\u1ecdc vi\u1ec7n N\u00f4ng nghi\u1ec7p Vi\u1ec7t Nam
\n3<\/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

Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i t\u1ec9nh B\u1eafc Giang nh\u1eb1m x\u00e1c \u0111\u1ecbnh c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng Ba k\u00edch t\u1eeb h\u1ea1t v\u00e0 hom. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o qu\u1ea3n h\u1ea1t trong ng\u0103n m\u00e1t t\u1ee7 l\u1ea1nh nhi\u1ec7t \u0111\u1ed9 3 – 5o<\/sup>C cho k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t, sau 150 ng\u00e0y b\u1ea3o qu\u1ea3n t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t \u0111\u1ea1t 55,7%. H\u1ea1t Ba k\u00edch thu h\u00e1i v\u1ec1 \u0111em gieo ngay cho t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 88,7%, th\u1eddi gian b\u1ea3o qu\u1ea3n h\u1ea1t c\u00e0ng d\u00e0i th\u00ec t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t c\u0169ng gi\u1ea3m \u0111i. H\u1ea1t b\u1ea3o qu\u1ea3n 90 ng\u00e0y t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u00f2n 70,3%, b\u1ea3o qu\u1ea3n 360 ng\u00e0y t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t ch\u1ec9 c\u00f2n 17,3%. Ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd h\u1ea1t b\u1eb1ng Gyberellin (GA3) 100ppm trong 8 gi\u1edd l\u00e0 t\u1ed1t nh\u1ea5t cho t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m \u0111\u1ea1t 95,3%. S\u1eed d\u1ee5ng ch\u1ea5t k\u00edch th\u00edch sinh tr\u01b0\u1edfng IBA n\u1ed3ng \u0111\u1ed9 1.000ppm v\u00e0 1.500ppm trong gi\u00e2m hom Ba k\u00edch cho t\u1ef7 l\u1ec7 c\u00e2y \u0111\u1ea1t ti\u00eau chu\u1ea9n xu\u1ea5t v\u01b0\u1eddn cao nh\u1ea5t 93,5 – 94,1%. Th\u1eddi v\u1ee5 gi\u00e2m hom Ba k\u00edch t\u1ed1t nh\u1ea5t \u1edf B\u1eafc Giang l\u00e0 v\u1ee5 \u0110\u00f4ng. S\u1eed d\u1ee5ng hom gi\u1eefa trong nh\u00e2n gi\u1ed1ng cho k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t. Gi\u1ed1ng Ba k\u00edch BK11 v\u00e0 BK9 cho t\u1ef7 l\u1ec7 c\u00e2y hom \u0111\u1ea1t ti\u00eau chu\u1ea9n xu\u1ea5t v\u01b0\u1eddn cao nh\u1ea5t 86,6 – 87,6%.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ba k\u00edch, nh\u00e2n gi\u1ed1ng t\u1eeb h\u1ea1t, gi\u00e2m hom, t\u1ec9nh B\u1eafc Giang<\/td>\n<\/tr>\n

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<\/a>Study on propagation techniques of Morinda officinalis<\/em> How in Bac Giang<\/strong><\/p>\n

The researches were conducted in Bac Giang to identify the propagation techniques by seed and stem cutting. The results showed that the best results were obtained from preserving seeds in the refrigerator at a temperature of 3 – 5o<\/sup>C. After 150 days of preservation, the germination rate of seeds was 55.7%. Sowing the fresh seeds obtained the high germination rate of 88.7%, the longer the seed storage time, the lower the germination rate. The germination rate of seeds was 70.3% for 90 days, and only 17.3% for 360 days after preserving. Treated seeds by Gyberellin (GA3) 100ppm for 8 hours obtained the highest germination rate of 95.3%. Using IBA with a concentration of 1,000ppm and 1,500ppm in stem cuttings gave the highest standard plant rate of 93.5 – 94.1%. The optimal season of cuttings in Bac Giang is winter. Using stem middle position of BK11 and BK9 varieties for stem cutting obtained the highest percentage of the standard planting (86.6 – 87.6%).<\/p>\n

Keywords:<\/em><\/strong> Morinda officinalis<\/em> How, seeding propagation, cutting propagation, Bac Giang province<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>K\u1ebeT QU\u1ea2 CH\u1eccN C\u00c2Y TR\u1ed8I QU\u1ebe T\u1ea0I Y\u00caN B\u00c1I V\u00c0 L\u00c0O CAI<\/p>\n

<\/a>Phan V\u0103n Th\u1eafng, T\u1ea1 Minh Quang, Nguy\u1ec5n Huy S\u01a1n, H\u00e0 V\u0103n N\u0103m, Tr\u1ecbnh B\u00edch H\u1ea3o<\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u L\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Qu\u1ebf (Cinnamomum cassia<\/em> Presl.) l\u00e0 c\u00e2y d\u01b0\u1ee3c li\u1ec7u quan tr\u1ecdng trong y h\u1ecdc c\u1ed5 truy\u1ec1n c\u0169ng nh\u01b0 y h\u1ecdc hi\u1ec7n \u0111\u1ea1i, do \u0111\u00f3 \u0111\u00e2y l\u00e0 lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c \u1edf m\u1ed9t s\u1ed1 t\u1ec9nh mi\u1ec1n n\u00fai c\u1ee7a Vi\u1ec7t Nam. S\u1ea3n ph\u1ea9m ch\u00ednh c\u1ee7a c\u00e2y qu\u1ebf l\u00e0 v\u1ecf v\u00e0 tinh d\u1ea7u. Tuy nhi\u00ean, n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng v\u1ecf v\u00e0 tinh d\u1ea7u qu\u1ebf c\u1ee7a c\u00e1c r\u1eebng tr\u1ed3ng l\u00e0 ch\u01b0a cao, nguy\u00ean nh\u00e2n c\u01a1 b\u1ea3n l\u00e0 gi\u1ed1ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong trong tr\u1ed3ng r\u1eebng ch\u01b0a \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng di truy\u1ec1n. Do \u0111\u00f3, nghi\u00ean c\u1ee9u ch\u1ecdn gi\u1ed1ng c\u00e2y tr\u1ed9i c\u00f3 n\u0103ng su\u1ea5t v\u1ecf v\u00e0 h\u00e0m l\u01b0\u1ee3ng tinh d\u1ea7u cao l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft. T\u1eeb c\u00e1c l\u00f4 r\u1eebng tr\u1ed3ng qu\u1ebf thu\u1ea7n lo\u00e0i \u0111\u1ec1u tu\u1ed5i \u1edf c\u00e1c huy\u1ec7n Tr\u1ea5n Y\u00ean (Y\u00ean B\u00e1i), B\u1eafc H\u00e0 v\u00e0 B\u1ea3o Y\u00ean (L\u00e0o Cai) \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 50 c\u00e2y tr\u1ed9i c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng nhanh v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng v\u1ecf, h\u00e0m l\u01b0\u1ee3ng tinh d\u1ea7u cao, t\u1ef7 l\u1ec7 th\u00e0nh ph\u1ea7n ch\u00ednh trans-aldehyt cinamic trong tinh d\u1ea7u tr\u00ean 80% v\u00e0 t\u1ef7 l\u1ec7 th\u00e0nh ph\u1ea7n couramin d\u01b0\u1edbi 4\u2030. Trong \u0111\u00f3, t\u1ea1i huy\u1ec7n Tr\u1ea5n Y\u00ean (Y\u00ean B\u00e1i) \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 15 c\u00e2y tr\u1ed9i 30 n\u0103m tu\u1ed5i c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng v\u1ecf kh\u00f4 \u0111\u1ea1t t\u1eeb 24,7 – 42,0 kg\/c\u00e2y, v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi qu\u1ea7n th\u1ec3 t\u1eeb 57,1 – 157,4%; h\u00e0m l\u01b0\u1ee3ng tinh d\u1ea7u \u0111\u1ea1t t\u1eeb 6,7 – 8,3%, v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi qu\u1ea7n th\u1ec3 t\u1eeb 10,3 – 38,8%. T\u1ea1i B\u1eafc H\u00e0 (L\u00e0o Cai) \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 17 c\u00e2y tr\u1ed9i 34 n\u0103m tu\u1ed5i c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng v\u1ecf kh\u00f4 \u0111\u1ea1t t\u1eeb 40,0 – 68,0 kg\/c\u00e2y, v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi qu\u1ea7n th\u1ec3 t\u1eeb 55,8 – 125,3%; h\u00e0m l\u01b0\u1ee3ng tinh d\u1ea7u trong v\u1ecf \u0111\u1ea1t t\u1eeb 7,0 – 8,1%, v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi trung b\u00ecnh qu\u1ea7n th\u1ec3 t\u1eeb 10,1 – 24,7%. T\u1ea1i B\u1ea3o Y\u00ean (L\u00e0o Cai) \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 18 c\u00e2y tr\u1ed9i 18 n\u0103m tu\u1ed5i c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng v\u1ecf kh\u00f4 \u0111\u1ea1t t\u1eeb 10,3 – 13,6 kg\/c\u00e2y, v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi qu\u1ea7n th\u1ec3 t\u1eeb 28,4 – 79,8%; h\u00e0m l\u01b0\u1ee3ng tinh d\u1ea7u \u0111\u1ea1t t\u1eeb 6,4 – 7,6%, v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi qu\u1ea7n th\u1ec3 t\u1eeb 13,4 – 24,4%. C\u00e1c c\u00e2y tr\u1ed9i n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c S\u1edf N\u00f4ng nghi\u1ec7p v\u00e0 Ph\u00e1t tri\u1ec3n N\u00f4ng th\u00f4n c\u00e1c t\u1ec9nh Y\u00ean B\u00e1i v\u00e0 L\u00e0o Cai c\u00f4ng nh\u1eadn, \u0111\u1ec1 ngh\u1ecb c\u00e1c c\u01a1 quan ch\u1ee9c n\u0103ng \u0111\u1ecba ph\u01b0\u01a1ng c\u00f3 ph\u01b0\u01a1ng \u00e1n qu\u1ea3n l\u00fd c\u00e1c c\u00e2y tr\u1ed9i n\u00e0y \u0111\u1ec3 ph\u1ee5c v\u1ee5 c\u00f4ng t\u00e1c nghi\u00ean c\u1ee9u khoa h\u1ecdc c\u0169ng nh\u01b0 ph\u1ee5c v\u1ee5 s\u1ea3n xu\u1ea5t trong giai \u0111o\u1ea1n tr\u01b0\u1edbc m\u1eaft v\u00e0 t\u01b0\u01a1ng lai.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ch\u1ecdn gi\u1ed1ng c\u00e2y tr\u1ed9i, qu\u1ebf, L\u00e0o Cai v\u00e0 Y\u00ean B\u00e1i<\/td>\n<\/tr>\n

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<\/a>Results of selecting plus tree Cinnamomum cassia<\/em> in Yen Bai and Lao Cai provinces<\/strong><\/p>\n

Cinnamomum cassia<\/em> is a mainly forest plant in some mountainous provinces of Vietnam. As an important medicinal plant for both traditional and modern medicines, C. cassia<\/em> ‘s main products come from bark and essential oils. Therefore, plus tree selection of C. cassia<\/em> is necessary to focus on growth trait, high bark yield and oil content. Lao Cai and Yen Bai provinces have the largest cinnamon growing area in Vietnam. In C. cassia<\/em> pure plantations in Tran Yen district (Yen Bai provice), Bac Ha and Bao Yen (Lao Cai province), 50 plus trees with fast growing, high bark weight and content of essential oil in bark, trans-aldehyt cinamic rate of oil more than 80% and couramin rate less than 4\u2030 were selected. In which, dry bark weight of 15 plus trees at the age of 30 years in Tran Yen district (Yen Bai province) ranged from 24.7 – 42.0 kg\/tree and higher from 57.1 – 157.4% than an average value of the population; essential oil content reached up 6.7 – 8.3% as well as exceeded from 10.3 – 38.8% in compasion of the average of population. In Bac Ha (Lao Cai province), 17 plus trees at 34 year old were selected with the dry bark weight of 40.0 – 68.0 kg\/tree, higher than the average of population from 55.8 – 125.3%; essential oil content from 7.0 – 8.1%, higher than the average population of 10.1 – 24.7%. In Bao Yen (Lao Cai provice), 18 plus trees in 18 – year-old were selected with the dry bark weight of 10.3 – 13.6 kg\/tree, higher than the average population from 28.4 – 79.8%; essential oil content reaches from 6.4 – 7.6%, higher than the average population from 13.4 – 24.4%. These plus trees have been recognized by the Department of Agriculture and Rural Development of Yen Bai and Lao Cai provinces, and suggested local authorities to have plans to manage those trees for scientific research as well as production from now.<\/p>\n

Keywords:<\/em><\/strong> Cinnamomum cassia<\/em>, plus trees selection, Lao Cai and Yen Bai provices<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U T\u00c1I SINH C\u00c2Y KEO LAI (Acacia hybrid) TH\u00d4NG QUA M\u00d4 S\u1eb8O V\u00c0 PH\u00c1T SINH PH\u00d4I SOMA PH\u1ee4C V\u1ee4 CHUY\u1ec2N GEN<\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb Huy\u1ec1n*, Tr\u1ea7n Th\u1ecb Thu H\u00e0, H\u00e0 Th\u1ecb Huy\u1ec1n Ng\u1ecdc,
\nNguy\u1ec5n Th\u1ecb Vi\u1ec7t H\u00e0, L\u00ea Th\u1ecb Thu\u1ef7, L\u00ea 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 –
\nVi\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 t\u00e1i sinh c\u00e2y keo lai (Acacia hybrid) th\u00f4ng qua s\u1ef1 h\u00ecnh th\u00e0nh m\u00f4 s\u1eb9o v\u00e0 ph\u00e1t sinh ph\u00f4i soma c\u00f3 \u00fd ngh\u0129a quan tr\u1ecdng, ph\u1ee5c v\u1ee5 cho c\u00f4ng t\u00e1c chuy\u1ec3n gen v\u00e0o gi\u1ed1ng c\u00e2y n\u00e0y. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u t\u1ea1o m\u00f4 s\u1eb9o t\u1eeb \u0111o\u1ea1n th\u00e2n v\u00e0 m\u1ea3nh l\u00e1 c\u1ee7a 3 d\u00f2ng keo lai BV10, BV16, BV33 c\u00f3 t\u1ef7 l\u1ec7 \u0111\u1ea1t t\u1eeb 88,3% \u0111\u1ebfn 93,6% trong m\u00f4i tr\u01b0\u1eddng MS b\u1ed5 sung 1 mg\/l 2,4-D v\u00e0 0,5 mg\/l BAP. V\u1edbi m\u00f4i tr\u01b0\u1eddng MS b\u1ed5 sung 1 mg\/l TDZ v\u00e0 0,25 mg\/l IAA, t\u1ef7 l\u1ec7 m\u00f4 s\u1eb9o ph\u00e1t tri\u1ec3n t\u1ea1o ph\u00f4i soma \u0111\u1ea1t t\u1eeb 52,6% \u0111\u1ebfn 59,3%; t\u1ef7 l\u1ec7 ph\u00e1t sinh ch\u1ed3i t\u1eeb ph\u00f4i soma \u0111\u1ea1t t\u1eeb 56,7% \u0111\u1ebfn 58,4% sau 9 tu\u1ea7n nu\u00f4i c\u1ea5y. M\u00f4i tr\u01b0\u1eddng MS b\u1ed5 sung 1,5 mg\/l BAP v\u00e0 0,5 mg\/l NAA th\u00edch h\u1ee3p cho qu\u00e1 tr\u00ecnh nh\u00e2n nhanh v\u1edbi s\u1ed1 ch\u1ed3i trung b\u00ecnh \u0111\u1ea1t 6,5 \u0111\u1ebfn 7,2 ch\u1ed3i\/c\u1ee5m. M\u00f4i tr\u01b0\u1eddng ra r\u1ec5 th\u00edch h\u1ee3p l\u00e0 1\/2MS b\u1ed5 sung 1,5 mg\/l IBA c\u00f3 t\u1ef7 l\u1ec7 ra r\u1ec5 \u0111\u1ea1t t\u1eeb 88,33% \u0111\u1ebfn 90,83%. H\u1ec7 th\u1ed1ng t\u00e1i sinh keo lai th\u00f4ng qua m\u00f4 s\u1eb9o v\u00e0 ph\u00e1t sinh ph\u00f4i soma c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng \u0111\u1ec3 chuy\u1ec3n gen nh\u1eb1m t\u1ea1o \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 gi\u1ed1ng keo lai m\u1edbi mang t\u00ednh tr\u1ea1ng mong mu\u1ed1n.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Keo lai, <\/em>m\u00f4 s\u1eb9o, ph\u00f4i soma, t\u00e1i sinh<\/td>\n<\/tr>\n

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<\/a>Regeneration of acacia hybrid through callus and somatic embryogenesis for gene transfer<\/strong><\/p>\n

Research on regenerating Acacia hybrid through callus and somatic embryogenesis is important, serving the gene transfer into this plant. Results of research on creating callus tissue from the young shoot segments and leaf pieces of 3 clones of hybrid Acacia BV10, BV16 and BV33 resulted ratio of callus induction from 88.3% to 93.6% in MS medium supplemented with 1 mg\/l 2.4-D and 0.5 mg\/l BAP. In MS medium supplemented with 1 mg\/l TDZ and 0.25 mg\/l IAA, the percentage of callus that formed somatic embryos ranges from 52.6% to 59.3%; the percentage of somatic embryos that developed shoots reached 56.7% to 58.4% after 9 weeks of culture. MS medium supplemented with 1.5 mg\/l BAP and 0.5 mg\/l NAA is suitable for multiplication with an average of 6.5 to 7.2 shoots\/cluster. Appropriate rooting medium is 1\/2MS supplemented with 1.5 mg\/l IBA with rooting rates from 88.33% to 90.83%. Acacia hybrid regeneration system through callus and somatic embryogenesis can be applied for gene transfer to create new varieties with desired traits.<\/p>\n

Keywords:<\/em><\/strong> Acacia hybrid, callus, somatic embryogenesis, regeneration<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u1ea2NH H\u01af\u1edeNG C\u1ee6A PH\u01af\u01a0NG PH\u00c1P L\u1ea4Y M\u1eaaU V\u00c0 T\u00c1CH CHI\u1ebeT \u0110\u1ebeN CH\u1ea4T L\u01af\u1ee2NG ADN T\u1ed4NG S\u1ed0 C\u1ee6A LO\u00c0I B\u00c1CH V\u00c0NG (Xanthocyparis vietnamensis <\/em>Farjon & N.T.Hiep) PH\u1ee4C V\u1ee4 C\u00d4NG T\u00c1C NGHI\u00caN C\u1ee8U B\u1ea2O T\u1ed2N V\u00c0 PH\u00c1T TRI\u1ec2N NGU\u1ed2N GEN<\/p>\n

<\/a>H\u00e0 Th\u1ecb Huy\u1ec1n Ng\u1ecdc1<\/sup>, Nguy\u1ec5n Th\u1ecb Huy\u1ec1n1<\/sup>, Tr\u1ea7n Th\u1ecb Thu H\u00e01<\/sup>, Nguy\u1ec5n Th\u1ecb Vi\u1ec7t H\u00e01<\/sup>,
\nL\u00ea Th\u1ecb Th\u1ee7y1<\/sup>, B\u00f9i Tr\u1ecdng Th\u1ee7y2<\/sup>, Nguy\u1ec5n C\u00f4ng Ph\u01b0\u01a1ng2<\/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
\n2<\/sup> Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p \u0110\u00f4ng B\u1eafc B\u1ed9<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Lo\u00e0i B\u00e1ch v\u00e0ng (Xanthocyparis vietnamensis <\/em>Farjon & N.T.Hiep) thu\u1ed9c chi B\u00e1ch v\u00e0ng (Xanthocyparis<\/em>), h\u1ecd Ho\u00e0ng \u0111\u00e0n (Cupressaceae). \u0110\u00e2y l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 qu\u00fd, c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao nh\u01b0ng kh\u1ea3 n\u0103ng t\u00e1i sinh k\u00e9m v\u1edbi m\u1eadt \u0111\u1ed9 t\u00e1i sinh ch\u1ec9 kho\u1ea3ng 0,65 c\u00e2y t\u00e1i sinh\/g\u1ed1c c\u00e2y m\u1eb9 n\u00ean ch\u00fang \u0111ang \u0111\u1ee9ng tr\u01b0\u1edbc nguy c\u01a1 tuy\u1ec7t ch\u1ee7ng do t\u00ecnh tr\u1ea1ng khai th\u00e1c qu\u00e1 m\u1ee9c. V\u1edbi m\u1ee5c ti\u00eau x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c ph\u01b0\u01a1ng ph\u00e1p t\u1ed1i \u01b0u cho qu\u00e1 tr\u00ecnh t\u00e1ch chi\u1ebft ADN c\u1ee7a B\u00e1ch v\u00e0ng \u0111\u1ec3 h\u1ea1n ch\u1ebf l\u01b0\u1ee3ng m\u1eabu v\u00e0 gi\u1ea3m t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn qu\u1ea7n th\u1ec3 lo\u00e0i tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh nghi\u00ean c\u1ee9u di truy\u1ec1n, ch\u00fang t\u00f4i \u0111\u00e3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p nh\u1ea5t \u0111\u1ec3 t\u00e1ch chi\u1ebft ADN cho lo\u00e0i n\u00e0y. Trong nghi\u00ean c\u1ee9u n\u00e0y, s\u1eed d\u1ee5ng 6 m\u1eabu B\u00e1ch v\u00e0ng bao g\u1ed3m c\u00e0nh v\u00e0 l\u00e1 thu \u0111\u01b0\u1ee3c t\u1ea1i 3 qu\u1ea7n th\u1ec3 kh\u00e1c nhau c\u1ee7a ba t\u1ec9nh H\u00e0 Giang, Tuy\u00ean Quang v\u00e0 Cao B\u1eb1ng (2 m\u1eabu\/qu\u1ea7n th\u1ec3) \u0111\u1ec3 ti\u1ebfn h\u00e0nh 2 quy tr\u00ecnh t\u00e1ch chi\u1ebft ADN v\u1edbi 4 c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m kh\u00e1c nhau nh\u1eb1m t\u00ecm ra ph\u01b0\u01a1ng ph\u00e1p t\u1ed1i \u01b0u nh\u1ea5t. K\u1ebft qu\u1ea3 cho th\u1ea5y s\u1eed d\u1ee5ng quy tr\u00ecnh t\u00e1ch chi\u1ebft ADN b\u1eb1ng CTAB 4% (20mM EDTA pH8, 1,5M NaCl, 100mM Tris HCl pH8, 4% CTAB, 2% PVP v\u00e0 0,2% \u03b2-mercaptoethanol) \u0111\u1ec3 t\u00e1ch ADN t\u1ed5ng s\u1ed1 t\u1eeb m\u1eabu c\u00e0nh (c\u1ea3 t\u01b0\u01a1i v\u00e0 kh\u00f4) c\u1ee7a c\u00e2y B\u00e1ch v\u00e0ng l\u00e0 hi\u1ec7u qu\u1ea3 nh\u1ea5t. Trong \u0111\u00f3, n\u1ed3ng \u0111\u1ed9 v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a ADN thu \u0111\u01b0\u1ee3c t\u1eeb m\u1eabu c\u00e0nh kh\u00f4 t\u1ed1t h\u01a1n h\u1eb3n so v\u1edbi c\u00e1c v\u1eadt li\u1ec7u c\u00f2n l\u1ea1i.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> T\u00e1ch chi\u1ebft ADN, B\u00e1ch v\u00e0ng, \u0111i\u1ec7n di<\/td>\n<\/tr>\n

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<\/a>The effects of sampling method and extraction method on DNA quality of Xanthocyparis vietnamensis <\/em>for genetic source conservation of precious and rare forest vegetation<\/strong><\/p>\n

Xanthocyparis vietnamensis <\/em>Farjon & N.T.Hiep, <\/em>an endemic plant in Vietnam, has important ecological and commercial values. However their regeneration density were about 0.65 seedling\/mother tree, this species has been threatened by rapid habitat destruction and overexploitation of the forest for timber. It has been classified as a category “Critically Endangered (CR) species”. Prior to conducting genetic studies on this critically endangered species, it is desirable to optimise DNA extraction to limit destructive sampling and reduce impacts on populations. In this study, a total of 6 individuals of Callitropsis vietnamensis<\/em> were sampled from 3 populations: Ha Giang province, Tuyen Quang province and Cao Bang province (2 samples\/population, including branch and leaf). Two DNA extraction processes with four different formulas were conducted to find out the most suitable methods. Results showed that Total genomic DNA that was extracted using CTAB 4% (20 ml EDTA pH8, 1.5M NaCl, 100mM Tris HCl pH8, 4% CTAB, 2% PVP and 0,2% \u03b2-mercaptoethanol) is most effective method for branch samples of Xanthocyparis vietnamensis <\/em>Farjon & N.T.Hiep.<\/p>\n

Keywords:<\/em><\/strong> DNA extraction, Xanthocyparis vietnamensis <\/em>Farjon & N.T.Hiep, electrophoresis, population<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110A D\u1ea0NG DI TRUY\u1ec0N QU\u1ea6N TH\u1ec2 C\u00c2Y TR\u1ed8I GI\u1ed4I \u0102N H\u1ea0T (Michelia tonkinensis<\/em> A.Chev.) \u1ede M\u1ed8T S\u1ed0 T\u1ec8NH PH\u00cdA B\u1eaeC VI\u1ec6T NAM D\u1ef0A TR\u00caN CH\u1ec8 TH\u1eca SSR<\/p>\n

<\/a>Tr\u1ea7n Th\u1ecb Li\u1ec5u1*<\/sup>, \u0110inh Th\u1ecb Ph\u00f2ng1, 2<\/sup>, Nguy\u1ec5n V\u0103n H\u00f9ng3<\/sup><\/p>\n

1<\/sup>B\u1ea3o t\u00e0ng Thi\u00ean nhi\u00ean Vi\u1ec7t Nam, Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Vi\u1ec7t Nam
\n2<\/sup>H\u1ecdc vi\u1ec7n Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7, Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Vi\u1ec7t Nam
\n3<\/sup>Trung t\u00e2m Gi\u1ed1ng c\u00e2y tr\u1ed3ng, v\u1eadt nu\u00f4i v\u00e0 th\u1ee7y s\u1ea3n t\u1ec9nh H\u00f2a B\u00ecnh<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Gi\u1ed5i \u0103n h\u1ea1t (Michelia tonkinensis<\/em> A.Chev.) l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 \u0111a t\u00e1c d\u1ee5ng, c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf v\u00e0 b\u1ea3o t\u1ed3n cao. Tuy nhi\u00ean, c\u00e1c qu\u00e2\u0300n th\u00ea\u0309 Gi\u1ed5i \u0103n h\u1ea1t trong r\u1eebng t\u1ef1 nhi\u00ean \u0111ang b\u1ecb suy gi\u1ea3m nghi\u00eam tr\u1ecdng do b\u1ecb khai th\u00e1c qua\u0301 m\u01b0\u0301c. Trong nghi\u00ean c\u1ee9u n\u00e0y, 25 ch\u1ec9 th\u1ecb SSR \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n t\u00edch \u0111a d\u1ea1ng di truy\u1ec1n c\u1ee7a 50 c\u00e1 th\u1ec3 c\u00e2y tr\u1ed9i Gi\u1ed5i \u0103n h\u1ea1t thu t\u1ea1i 5 t\u1ec9nh H\u00f2a B\u00ecnh, Thanh H\u00f3a, Ph\u00fa Th\u1ecd, L\u00e0o Cai v\u00e0 Lai Ch\u00e2u. Trong \u0111\u00f3 qu\u1ea7n th\u1ec3 c\u00e2y tr\u1ed9i Gi\u1ed5i \u0103n h\u1ea1t \u1edf H\u00f2a B\u00ecnh th\u1ec3 hi\u1ec7n t\u00ednh \u0111a d\u1ea1ng di truy\u1ec1n cao nh\u1ea5t (Na<\/em> = 3,920; Ne<\/em> = 2,588; I <\/em>= 0,966; Ho<\/em> = 0,561; He<\/em> = 0,515 v\u00e0 PPB<\/em> = 96%) v\u00e0 th\u1ea5p nh\u1ea5t l\u00e0 qu\u1ea7n th\u1ec3 Thanh H\u00f3a (Na<\/em> = 2,200; Ne<\/em> = 1,984; I <\/em>= 0,600; Ho<\/em> = 0,560; He<\/em> = 0,372; v\u00e0 PPB<\/em> = 72%). C\u1ea3 5 qu\u1ea7n th\u1ec3 \u0111\u1ec1u xu\u1ea5t hi\u1ec7n alen hi\u1ebfm (Ap<\/em> trung b\u00ecnh = 0,360) v\u00e0 x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng giao ph\u1ea5n ch\u00e9o. Hi\u1ec7n t\u01b0\u1ee3ng di nh\u1eadp gen (Nm<\/em>) c\u0169ng \u0111\u00e3 x\u1ea3y ra trong qu\u1ea7n th\u1ec3 Gi\u1ed5i \u0103n h\u1ea1t v\u1edbi gi\u00e1 tr\u1ecb trung b\u00ecnh Nm<\/em> = 1,884. T\u1ed5ng m\u1ee9c \u0111\u1ed9 thay \u0111\u1ed5i ph\u00e2n t\u1eed (AMOVA) gi\u1eefa 5 qu\u1ea7n th\u1ec3 l\u00e0 37,07% v\u00e0 gi\u1eefa c\u00e1c c\u00e1 th\u1ec3 trong c\u00f9ng qu\u1ea7n th\u1ec3 l\u00e0 62,93%. M\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed3ng di truy\u1ec1n c\u1ee7a qu\u1ea7n th\u1ec3 c\u00e2y tr\u1ed9i Gi\u1ed5i \u0103n h\u1ea1t dao \u0111\u1ed9ng t\u1eeb 58 \u0111\u1ebfn 90%. Th\u00f4ng qua ph\u00e2n t\u00edch ph\u00e2n t\u1eed cho th\u1ea5y qu\u1ea7n th\u1ec3 50 c\u00e2y tr\u1ed9i Gi\u1ed5i \u0103n h\u1ea1t nghi\u00ean c\u1ee9u c\u00f3 t\u00ednh \u0111a d\u1ea1ng di truy\u1ec1n t\u01b0\u01a1ng \u0111\u1ed1i cao. Hi\u1ec7n t\u01b0\u1ee3ng th\u1ee5 ph\u1ea5n ch\u00e9o gi\u1eefa c\u00e1c c\u00e1 th\u1ec3 trong qu\u1ea7n th\u1ec3 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y n\u00ean \u0111\u1ea3m b\u1ea3o duy tr\u00ec t\u00ednh \u0111a d\u1ea1ng di truy\u1ec1n \u1edf c\u00e1c th\u1ebf h\u1ec7 ti\u1ebfp theo. V\u00ec v\u1eady c\u1ea7n c\u00f3 chi\u1ebfn l\u01b0\u1ee3c s\u1edbm \u0111\u1ec3 b\u1ea3o t\u1ed3n c\u00e1c d\u00f2ng c\u00e2y tr\u1ed9i Gi\u1ed5i \u0103n h\u1ea1t, ph\u1ee5c v\u1ee5 c\u00f4ng t\u00e1c tuy\u1ec3n ch\u1ecdn gi\u1ed1ng v\u00e0 nh\u00e2n r\u1ed9ng lo\u00e0i.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> \u0110a d\u1ea1ng di truy\u1ec1n, Michelia tonkinensis<\/em>, SSR<\/td>\n<\/tr>\n

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<\/a>Genetic diversity of the populations of Michelia tonkinensis<\/em> A. Chev. in some North provinces, Vietnam using SSR marker<\/strong><\/p>\n

Michelia tonkinensis<\/em> A.Chev. is a multi-purpose timber species, with high economic and conservation value. However, the populations of M.<\/em> tonkinensis<\/em> in natural forests are reduced due to over exploitation. In this study, 25 SSR markers were used to analyze the genetic diversity of 50 dominant individuals M.<\/em> tonkinensis<\/em> collected in 5 provinces Hoa Binh, Thanh Hoa, Phu Tho, Lao Cai, Lai Chau. Among them, the level of genetic diversity in Hoa Binh population was the highest (Na<\/em> = 3.920; Ne<\/em> = 2.588; I <\/em>= 0.966; Ho<\/em> = 0.561; He<\/em> = 0.515 and PPB<\/em> = 96%) and the lowest in Thanh Hoa (Na<\/em> = 2.200; Ne<\/em> = 1.984; I <\/em>= 0.600; Ho<\/em> = 0.560; He<\/em> = 0.372 and PPB<\/em> = 72%). All 5 populations had the private allele (mean of Ap<\/em> = 0.360) and cross-pollination. The gene flow (Nm<\/em>) has also occurred in the M. tonkinensis<\/em> populations with an average value of Nm<\/em> = 1.884. The total level of molecular variance (AMOVA) was relatively low among populations (37.07%) and high among individuals within the populations (62.93%). The genetic similarity of M. tonkinensis<\/em> populations ranged from 58 to 90%. Molecular analysis results showed that M. tonkinensis<\/em> populations had relatively high genetic diversity. The cross-pollination also occurred among individuals in the population and among the populations, so that ensure the maintenance of genetic diversity in population the next generation. Therefore, the M. tonkinensis<\/em> populations should be protected at the individual level, serving the selection and replication of species.<\/p>\n

Keywords:<\/em><\/strong> Genetic diversity, Michelia tonkinensis<\/em>, SSR<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u1eb6C \u0110I\u1ec2M H\u00ccNH TH\u00c1I V\u00c0 \u0110A D\u1ea0NG DI TRUY\u1ec0N C\u1ee6A C\u00c1C GI\u1ed0NG C\u00c2Y BA K\u00cdCH (Morinda<\/em> officinalis <\/em>How)<\/p>\n

<\/a>Ng\u00f4 Th\u1ecb Thu Hi\u1ec1n1<\/sup>, Kim Ng\u1ecdc Quang2<\/sup>, Nguy\u1ec5n Mai Th\u01a1m3<\/sup>.<\/p>\n

1 <\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc D\u01b0\u1ee3c H\u00e0 N\u1ed9i
\n2 <\/sup>NCS Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n\u00a03 <\/sup>H\u1ecdc Vi\u1ec7n N\u00f4ng nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/strong><\/p>\n

Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nh\u1eb1m \u0111\u00e1nh gi\u00e1 \u0111\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i v\u00e0 \u0111a d\u1ea1ng di truy\u1ec1n c\u1ee7a 11 gi\u1ed1ng Ba k\u00edch \u0111\u01b0\u1ee3c thu th\u1eadp \u1edf 6 t\u1ec9nh mi\u1ec1n n\u00fai ph\u00eda B\u1eafc. C\u00e1c gi\u1ed1ng Ba k\u00edch c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m chung l\u00e0 th\u00e2n tr\u00f2n, th\u00e2n non m\u00e0u xanh, r\u1ec5 tr\u1ee5 m\u1eadp v\u1eb7n v\u1eb9o, l\u00f5i h\u01a1i v\u00e0ng c\u00f3 kh\u00eda v\u00e0 gai. S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 l\u00f4ng tr\u00ean th\u00e2n, tr\u00ean l\u00e1, h\u00ecnh d\u1ea1ng l\u00e1 v\u00e0 m\u00e0u s\u1eafc ng\u1ecdn th\u00e2n l\u00e0 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m ph\u00e2n bi\u1ec7t c\u00e1c gi\u1ed1ng. C\u00e1c gi\u1ed1ng c\u00f3 ng\u1ecdn non m\u00e0u xanh l\u00e0 BK7, BK8, BK9, BK10, BK11, c\u00e1c gi\u1ed1ng c\u00f3 ng\u1ecdn non c\u00f3 m\u00e0u t\u00edm l\u00e0 BK1, BK2, BK3, BK4, BK5 v\u00e0 BK6. \u0110\u1eb7c \u0111i\u1ec3m l\u00e1 c\u00f3 l\u00f4ng \u00edt li\u00ean quan \u0111\u1ebfn l\u00f4ng tr\u00ean th\u00e2n v\u00e0 tr\u00ean ng\u1ecdn non. Gi\u1ed1ng BK9 ng\u1ecdn non m\u00e0u xanh c\u00f3 l\u00f4ng, l\u00e1 m\u1eb7t tr\u00ean nh\u1eb5n v\u00e0 m\u1eb7t d\u01b0\u1edbi c\u00f3 l\u00f4ng, BK5 l\u00e1 kh\u00f4ng c\u00f3 l\u00f4ng \u1edf c\u1ea3 hai m\u1eb7t. Hoa Ba k\u00edch m\u00e0u tr\u1eafng sau chuy\u1ec3n v\u00e0ng, \u0111a s\u1ed1 c\u00e1c gi\u1ed1ng c\u00f3 qu\u1ea3 l\u00e0 h\u1ed7n h\u1ee3p, ri\u00eang gi\u1ed1ng BK2 l\u00e0 qu\u1ea3 \u0111\u01a1n, BK7 qu\u1ea3 t\u1ee5 nhi\u1ec1u h\u01a1n, qu\u1ea3 c\u00f3 m\u00e0u xanh khi non v\u00e0 v\u00e0ng \u0111\u1ecf khi ch\u00edn. D\u1ef1a v\u00e0o c\u00e2y ph\u00e2n lo\u1ea1i cho th\u1ea5y tr\u00ecnh t\u1ef1 v\u00f9ng ITS-rADN c\u1ee7a 11 m\u1eabu Ba k\u00edch chia th\u00e0nh 2 nh\u00f3m ch\u00ednh: Nh\u00f3m 1 ch\u1ec9 g\u1ed3m tr\u00ecnh t\u1ef1 v\u00f9ng ITS-rADN c\u1ee7a gi\u1ed1ng BK2. Nh\u00f3m 2 g\u1ed3m tr\u00ecnh t\u1ef1 v\u00f9ng ITS-rADN c\u1ee7a 10 gi\u1ed1ng c\u00f2n l\u1ea1i, \u0111\u01b0\u1ee3c chia th\u00e0nh 2 nh\u00f3m nh\u1ecf, trong \u0111\u00f3 nh\u00f3m 2.1 ch\u1ec9 c\u00f3 gi\u1ed1ng BK9, 9 gi\u1ed1ng c\u00f2n l\u1ea1i thu\u1ed9c nh\u00f3m 2.2 l\u00e0 BK5, BK6, BK7, BK8, BK4, BK1, BK3, BK10 v\u00e0 BK11.<\/p>\n

T\u1eeb kh\u00f3a: <\/em><\/strong>Ba k\u00edch (Morinda officinalis <\/em>How), h\u00ecnh th\u00e1i, \u0111a d\u1ea1ng di truy\u1ec1n<\/td>\n<\/tr>\n

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<\/a>Morphological characteristics and genetic diversity of some varieties of Morinda officinalis<\/em> How<\/strong><\/p>\n

Our research on Morinda officinalis<\/em> How aim to using morphological characteristic and DNA barcode for species identification base on 11 types of Morinda officinalis<\/em> How in 6 Northern provices of Vietnam. Varieties of Morinda officinalis<\/em> How have cylindrical stem shape, young stem with green color and zigzag cylindrical root shape and wood pith with thorn. Differentiation of hair on the surfaces of stem and leaves, leaves shape and basal shoot color are considered as morphological characteristic identification between varieties. Varieties BK7, BK8, BK9, BK10, BK11 show green basal shoot whereas others varieties show purple. BK9 show green basal shoot and contains hairs in under leaves only while BK5 contains no hair. White flower of Morinda officinalis<\/em> How can change to yellow. Fruit of BK2 is simple fruit, fruit of BK7 is more convergence, green when young and yellow red when ripen while other varieties is multiple fruit. Result of rDNA barcoding, identification of ITS region and phylogeny construction show closely related of 9 varieties except for BK2 and BK9. Based on the classification tree, ITS-rADN region sequence of 11 varieties of Morinda officinalis<\/em> How was divided into 2 main groups Group 1 including ITS-rADN region sequence of BK2. Group 2 consists of ITS-rADN region sequences of the remaining 10 varieties divided into 2 subgroups. In that group 2.1, there are only BK9 samples, while 9 samples in group 2.2 are BK5, BK6, BK7, BK8, BK4, BK1, BK3, BK10 and BK11.<\/p>\n

Keywords: <\/em><\/strong>Morinda officinalis<\/em> How; morphology identification, DNA barcoding<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a><\/a>\u1ea2NH H\u01af\u1edeNG C\u1ee6A T\u1ef6 L\u1ec6 CHE S\u00c1NG, PH\u00c2N NPK V\u00c0 K\u00cdCH TH\u01af\u1edaC T\u00daI B\u1ea6U T\u1edaI SINH TR\u01af\u1edeNG C\u1ee6A TR\u00d4M (Sterculia foetida<\/em> L.)
\n4 TH\u00c1NG TU\u1ed4I TRONG GIAI \u0110O\u1ea0N V\u01af\u1edcN \u01af\u01a0M<\/p>\n

<\/a>Ph\u00f9ng V\u0103n Khang1<\/sup>, Ph\u00f9ng V\u0103n Khen2<\/sup>, Ninh V\u0103n Tu\u1ea5n1<\/sup>, <\/sub>Tr\u1ea7n \u0110\u1ee9c Th\u00e0nh1<\/sup><\/p>\n

1 <\/sup>Trung t\u00e2m \u1ee8ng d\u1ee5ng Khoa h\u1ecdc K\u1ef9 thu\u1eadt L\u00e2m nghi\u1ec7p Nam B\u1ed9
\n2<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam B\u1ed9<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a t\u1ef7 l\u1ec7 che s\u00e1ng, ph\u00e2n NPK v\u00e0 k\u00edch th\u01b0\u1edbc t\u00fai b\u1ea7u t\u1edbi sinh tr\u01b0\u1edfng c\u1ee7a Tr\u00f4m 4 th\u00e1ng tu\u1ed5i trong giai \u0111o\u1ea1n v\u01b0\u1eddn v\u01b0\u01a1m, k\u1ebft qu\u1ea3 cho th\u1ea5y: \u1ede giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m Tr\u00f4m l\u00e0 c\u00e2y ch\u1ecbu b\u00f3ng. Tuy nhi\u00ean, t\u00ednh ch\u1ecbu b\u00f3ng gi\u1ea3m d\u1ea7n theo th\u1eddi gian. Tr\u00f4m c\u1ea7n \u0111\u01b0\u1ee3c che s\u00e1ng trong 2 th\u00e1ng \u0111\u1ea7u \u1edf v\u01b0\u1eddn \u01b0\u01a1m v\u1edbi t\u1ef7 l\u1ec7 che s\u00e1ng \u1edf m\u1ee9c 25%, giai \u0111o\u1ea1n 2 th\u00e1ng ti\u1ebfp theo kh\u00f4ng c\u1ea7n che s\u00e1ng. Tr\u00f4m l\u00e0 lo\u00e0i c\u00e2y c\u1ea7n nhi\u1ec1u NPK \u0111\u1ec3 sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n \u1edf giai \u0111o\u1ea1n c\u00e2y con. Khi gieo \u01b0\u01a1m Tr\u00f4m, h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c b\u1ed5 sung ph\u00e2n t\u1ed5ng h\u1ee3p NPK k\u00e8m theo 10% ph\u00e2n chu\u1ed3ng hoai. H\u00e0m l\u01b0\u1ee3ng ph\u00e2n NPK (16-16-8) 3% gi\u00fap cho Tr\u00f4m sinh tr\u01b0\u1edfng t\u1ed1t. S\u1eed d\u1ee5ng b\u1ea7u c\u00f3 k\u00edch th\u01b0\u1edbc 14\u00d718cm l\u00e0 \u0111\u1ea3m b\u1ea3o cho Tr\u00f4m sinh tr\u01b0\u1edfng t\u1ed1t trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m v\u00e0 d\u1ec5 v\u1eadn chuy\u1ec3n c\u00e2y \u0111em tr\u1ed3ng.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> T\u1ef7 l\u1ec7 che s\u00e1ng, gieo \u01b0\u01a1m, ru\u1ed9t b\u1ea7u, Tr\u00f4m, Sterculia foetida<\/em> L.<\/td>\n<\/tr>\n

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<\/a>Effect of shading level, NPK fertilizer and pocket size on growth of Sterculia foetida<\/em> L. at 4 months of age in nursery<\/strong><\/p>\n

Study on effects of nursery shading, NPK fertilizer and the dimension of plastic nursery grow bag on the growth of Sterculia foetida <\/em>L. at 4 months of age in the nursery. The result shows that: during the period in the nursery, Sterculia foetida <\/em>L. is a shade-tolerant tree. However, this attitude will diminishing with time. Sterculia foetida<\/em> L. need shading at two months of age in the nursery with shading rate is 25%, next two months do not need shadding. Sterculia foetida <\/em>L.<\/em> seedlings need input more NPK fertilizer for growth and development during the time stay at the nursery. When we sowed Sterculia foetida <\/em>L.<\/em>, the potting mix need input more NPK fertilizer and 10% decomposed manure rate. The ratio of NPK (16-16-8) fertilizer at 3% is best for growth of Sterculia foetida <\/em>L. seedlings. Using plastic nursery grow bag at the size 14\u00d718cm ensure for growth of seedlings of Sterculia foetida <\/em>L. in nursery and and easy for transport.<\/p>\n

Keywords:<\/em><\/strong> Nursery shading, potting mix, nursery, Sterculia foetida<\/em> L.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>M\u00d4 H\u00ccNH \u01af\u1edaC T\u00cdNH SINH KH\u1ed0I TR\u00caN M\u1eb6T \u0110\u1ea4T C\u00c2Y R\u1eeaNG KH\u1ed8P \u0110\u01af\u1ee2C \u0110I\u1ec0U CH\u1ec8NH THEO C\u00c1C NH\u00c2N T\u1ed0 SINH TH\u00c1I V\u00c0 M\u00d4I TR\u01af\u1edcNG R\u1eeaNG<\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb T\u00ecnh1<\/sup>, B\u1ea3o Huy2<\/sup><\/p>\n

1<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc T\u00e2y Nguy\u00ean
\n2<\/sup> T\u01b0 v\u1ea5n \u0111\u1ed9c l\u1eadp<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

M\u1ee5c \u0111\u00edch c\u1ee7a nghi\u00ean c\u1ee9u l\u00e0 \u0111\u00e1nh gi\u00e1 \u0111\u1ec3 l\u1ef1a ch\u1ecdn m\u00f4 h\u00ecnh \u01b0\u1edbc t\u00ednh sinh kh\u1ed1i c\u00e2y r\u1eebng kh\u1ed9p (AGB<\/em>) d\u01b0\u1edbi \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1 sinh th\u00e1i m\u00f4i tr\u01b0\u1eddng r\u1eebng nh\u1eb1m n\u00e2ng cao \u0111\u1ed9 tin c\u1eady. \u00c1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p r\u00fat m\u1eabu ch\u1eb7t h\u1ea1 v\u1edbi 329 c\u00e2y m\u1eabu \u0111\u1ec3 thu th\u1eadp d\u1eef li\u1ec7u sinh kh\u1ed1i; s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u01b0\u1edbc l\u01b0\u1ee3ng m\u00f4 h\u00ecnh phi tuy\u1ebfn c\u00f3 tr\u1ecdng s\u1ed1, c\u1ed1 \u0111\u1ecbnh ho\u1eb7c x\u00e9t \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1 theo Maximum Likelihood v\u00e0 th\u1ea9m \u0111\u1ecbnh ch\u00e9o K-Fold v\u1edbi K=10 \u0111\u1ec3 so s\u00e1nh sai s\u1ed1 v\u00e0 l\u1ef1a ch\u1ecdn m\u00f4 h\u00ecnh. K\u1ebft qu\u1ea3 cho th\u1ea5y t\u1eebng nh\u00e2n t\u1ed1 sinh th\u00e1i, m\u00f4i tr\u01b0\u1eddng r\u1eebng kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn AGB<\/em>, trong khi \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng t\u1ed5ng h\u1ee3p c\u00e1c nh\u00e2n t\u1ed1 sinh th\u00e1i, m\u00f4i tr\u01b0\u1eddng r\u1eebng \u0111\u1ebfn m\u00f4 h\u00ecnh AGB<\/em> l\u00e0 r\u00f5 r\u1ec7t, th\u00f4ng qua d\u1ea1ng m\u00f4 h\u00ecnh AGB = AVERAGE \u00d7 MODIFIER <\/em>v\u1edbi \u0111\u1ed9 tin c\u1eady \u0111\u01b0\u1ee3c n\u00e2ng cao r\u00f5 r\u1ec7t so v\u1edbi m\u00f4 h\u00ecnh kh\u00f4ng c\u00f3 s\u1ef1 tham gia c\u00e1c nh\u00e2n t\u1ed1 n\u00e0y.<\/p>\n

T\u1eeb kh\u00f3a<\/em><\/strong>: <\/em>M\u00f4 h\u00ecnh sinh kh\u1ed1i, nh\u00e2n t\u1ed1 sinh th\u00e1i, r\u1eebng kh\u1ed9p<\/td>\n<\/tr>\n

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<\/a>Allometric equation for estimating tree above ground biomass modified by ecological and forest environmetal factors in dipterocarp forests<\/strong><\/p>\n

The purpose of the study was to validate and select the best model for estimating tree above ground biomass (AGB<\/em>) in dry dipterocar forests under the influence of ecological and forest environemtal factors to improve the reliability. A total of 329 trees were destructively sampled to obtain a dataset of the dry biomass of AGB<\/em>; The estimation methods for equations were weighted nonlinear fixed\/mixed models with\/without random effects fit by Maximum Likelihood; Using K-fold cross validation with K = 10, we compared AGB <\/em>predictions from developed AGB<\/em> models with and without ecological or forest environmetal factors. As a result, each ecological or forest environmetal factor did not affect AGB<\/em>, while the combined factors effect to AGB <\/em>model through the form: AGB = AVERAGE \u00d7 MODIFIER<\/em> that was significantly more reliable than model without these factors involved.<\/p>\n

Keywords:<\/em><\/strong> Biomass equation, dipterocarp forest, ecological factor.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>TH\u1ef0C TR\u1ea0NG G\u00c2Y TR\u1ed2NG V\u00c0 \u0110\u1eb6C \u0110I\u1ec2M SINH TR\u01af\u1edeNG, T\u00c1I SINH C\u1ee6A C\u00c2Y B\u1ea6N KH\u00d4NG C\u00c1NH (Sonneratia Apetala<\/em> Buch.Ham)
\nT\u1ea0I KHU V\u1ef0C C\u1eecA S\u00d4NG H\u1ed2NG<\/p>\n

<\/a>Tr\u1ea7n V\u0103n S\u00e1ng 1*<\/sup>, Ng\u00f4 V\u0103n Chi\u1ec1u2<\/sup>, Tr\u1ea7n Th\u1ecb H\u1ed3ng H\u1ea1nh2<\/sup>,
\nTr\u1ea7n Th\u1ecb Thu Hi\u1ec1n2<\/sup>, V\u0169 Qu\u1ed1c \u0110\u1ea1t2<\/sup>, Phan V\u0103n Tr\u01b0\u1eddng2<\/sup><\/p>\n

Vi\u1ec7n Sinh th\u00e1i v\u00e0 B\u1ea3o v\u1ec7 c\u00f4ng tr\u00ecnh
\n2 V\u01b0\u1eddn Qu\u1ed1c gia Xu\u00e2n Th\u1ee7y, t\u1ec9nh Nam \u0110\u1ecbnh<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u1ea7n kh\u00f4ng c\u00e1nh (Sonneratia apetala<\/em>) l\u00e0 lo\u00e0i c\u00e2y c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb \u1ea4n \u0110\u1ed9, Bangladesh v\u00e0 Myanmar. C\u00e2y c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m ph\u00e1t tri\u1ec3n nhanh, sinh kh\u1ed1i l\u1edbn, c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c th\u1eddi ti\u1ebft l\u1ea1nh v\u00e0 \u0111\u01b0\u1ee3c xem nh\u01b0 lo\u00e0i c\u00e2y \u01b0u ti\u00ean trong ph\u1ee5c h\u1ed3i r\u1eebng ng\u1eadp m\u1eb7n ven bi\u1ec3n. T\u1ea1i Vi\u1ec7t Nam, B\u1ea7n kh\u00f4ng c\u00e1nh \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 khoa h\u1ecdc mang v\u1ec1 v\u00e0 tr\u1ed3ng th\u1eed nghi\u1ec7m t\u1ea1i khu v\u1ef1c V\u01b0\u1eddn Qu\u1ed1c gia (VQG) Xu\u00e2n Th\u1ee7y t\u1eeb nh\u1eefng n\u0103m 2003. K\u1ebft qu\u1ea3 ban \u0111\u1ea7u cho th\u1ea5y c\u00e2y ph\u00e1t tri\u1ec3n t\u1ed1t, sinh tr\u01b0\u1edfng nhanh, ch\u1ecbu \u0111\u01b0\u1ee3c l\u1ea1nh c\u00f3 ti\u1ec1m n\u0103ng ph\u00e1t tri\u1ec3n \u0111\u1ec3 thay th\u1ebf m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y ng\u1eadp m\u1eb7n \u0111ang b\u1ecb suy tho\u00e1i. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra, kh\u1ea3o s\u00e1t t\u1ea1i khu v\u1ef1c nghi\u00ean c\u1ee9u cho th\u1ea5y B\u1ea7n kh\u00f4ng c\u00e1nh b\u1eaft \u0111\u1ea7u \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng t\u1ea1i khu v\u1ef1c VQG Xu\u00e2n Th\u1ee7y v\u00e0 c\u1eeda s\u00f4ng H\u1ed3ng t\u1eeb n\u0103m 2003 \u0111\u1ebfn nay th\u00f4ng qua 06 ch\u01b0\u01a1ng tr\u00ecnh (\u0111\u1ec1 t\u00e0i, d\u1ef1 \u00e1n) tr\u1ed3ng r\u1eebng \u1edf 10 khu v\u1ef1c b\u00e3i b\u1ed3i c\u1eeda S\u00f4ng H\u1ed3ng v\u1edbi t\u1ed5ng di\u1ec7n t\u00edch l\u00e0 32,55ha v\u00e0 69 c\u00e2y tr\u1ed3ng ph\u00e2n t\u00e1n. V\u1ec1 m\u1eb7t sinh tr\u01b0\u1edfng, c\u00e2y B\u1ea7n kh\u00f4ng c\u00e1nh tr\u01b0\u1edfng th\u00e0nh cao t\u1eeb 10m \u0111\u1ebfn 15m, c\u00e2y sau khi tr\u1ed3ng sinh tr\u01b0\u1edfng nhanh v\u00e0 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, \u0111\u1eb7c bi\u1ec7t l\u00e0 kh\u00f4ng b\u1ecb r\u1ee5ng l\u00e1, ch\u1ebft c\u00e0nh khi c\u00f3 r\u00e9t \u0111\u1eadm, r\u00e9t h\u1ea1i. T\u1ea1i khu v\u1ef1c nghi\u00ean c\u1ee9u c\u0169ng x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 87 c\u00e2y B\u1ea7n kh\u00f4ng c\u00e1nh t\u00e1i sinh t\u1ef1 nhi\u00ean. S\u1ed1 l\u01b0\u1ee3ng c\u00e2y t\u00e1i sinh n\u1eb1m \u1edf c\u1ea5p tu\u1ed5i 4 – 6 tu\u1ed5i chi\u1ebfm s\u1ed1 l\u01b0\u1ee3ng l\u1edbn v\u1edbi 49 c\u00e2y v\u00e0 t\u1eadp trung ch\u1ee7 y\u1ebfu \u1edf khu v\u1ef1c b\u00e3i b\u1ed3i c\u1ee7a VQG Xu\u00e2n Th\u1ee7y. H\u1ea7u h\u1ebft c\u00e1c c\u00e2y B\u1ea7n kh\u00f4ng c\u00e1nh t\u00e1i sinh t\u1ea1i khu v\u1ef1c \u0111\u1ec1u sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n t\u1ed1t, s\u1ed1 c\u00e2y c\u00f3 ph\u1ea9m ch\u1ea5t t\u1ed1t chi\u1ebfm t\u1edbi 86%.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea7n kh\u00f4ng c\u00e1nh, c\u1eeda s\u00f4ng H\u1ed3ng, g\u00e2y tr\u1ed3ng, r\u1eebng ng\u1eadp m\u1eb7n, t\u00e1i sinh, VQG Xu\u00e2n Th\u1ee7y<\/td>\n<\/tr>\n

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<\/a>Natural regeneration, growth characteristic and planting of Sonneratia apetala<\/em> Buch.Ham, the case study at Red river estuary<\/strong><\/p>\n

Sonneratia apetala<\/em> is a mangrove species distributed in India, Bangladesh and Myanmar. This species is characterized by rapid growth, high biomass, adapted to cold weather conditions and it seems to ruderal in coastal mangrove rehabilitation. In Vietnam, S. apetala<\/em> seeds have been brought and tested by scientists in Xuan Thuy National Park since 2003. Initial results showed that the trees growth very fast, adapted very well with the weather cold and it has the potential to grow to replace some of the degraded mangrove species. The results and surveys in the study area showed that S. apetala<\/em> seedlings has been planted in Xuan Thuy National Park and Red river estuary starting from 2003 to present through 06 projects in 10 areas of the alluvial ground at Red river estuary with a total area of \u200b\u200b32.55ha and 69 scattered trees. In terms of growth, overall height of adult trees is from 10m to 15m, growth very fast and adapted very well to low temperatures, especially without losing their leaves, dying branches when facing to extremely weather. In the study area, 87 naturally regenerated trees were also identified. The number of natural regeneration trees at the age of 4 – 6 years old accounts for a large number with 49 trees and concentrates mainly in the alluvial ground of Xuan Thuy National Park. Most of the natural regeneration trees in the study area growth well, with 86% of them having good quality.<\/p>\n

Keywords:<\/em><\/strong> Mangrove, natural regeneration, planting, Red river estuary, Sonneratia apetala,<\/em> Xuan Thuy National Park<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U KH\u1ea2 N\u0102NG PH\u00d2NG CH\u1ed0NG N\u1ea4M M\u1ed0C, N\u1ea4M M\u1ee4C C\u1ee6A V\u00c1N L\u1ea0NG G\u1ed6 D\u1eba \u0110\u1ece V\u00c0 V\u00c1N B\u00d3C G\u1ed6 B\u1edcI L\u1edcI V\u00c0NG \u0110\u01af\u1ee2C X\u1eec L\u00dd CH\u1ebePH\u1ea8M B\u1ea2O QU\u1ea2N<\/p>\n

<\/a>V\u00f5 \u0110\u1ea1i H\u1ea3i1<\/sup>, B\u00f9i Th\u1ecb Th\u1ee7y2<\/sup>, \u0110o\u00e0n Th\u1ecb B\u00edch Ng\u1ecdc2<\/sup>, Ho\u00e0ng Th\u1ecb T\u00e1m2<\/sup>,
\nNguy\u1ec5n Th\u1ecb H\u1eb1ng2<\/sup>, B\u00f9i V\u0103n \u00c1i2<\/sup>, Nguy\u1ec5n V\u0103n \u0110\u1ee9c2<\/sup><\/p>\n

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

D\u1ebb \u0111\u1ecf v\u00e0 B\u1eddi l\u1eddi v\u00e0ng l\u00e0 c\u00e1c c\u00e2y b\u1ea3n \u0111\u1ecba sinh tr\u01b0\u1edfng t\u01b0\u01a1ng \u0111\u1ed1i nhanh c\u00f3 ti\u1ec1m n\u0103ng cung c\u1ea5p g\u1ed7 l\u1edbn. G\u1ed7 D\u1ebb \u0111\u1ecf m\u00e0u h\u1ed3ng, c\u00f3 v\u00e2n th\u1edb \u0111\u1eb9p, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ebf bi\u1ebfn v\u00e1n l\u1ea1ng, g\u1ed7 x\u1ebb. G\u1ed7 B\u1eddi l\u1eddi v\u00e0ng c\u00f3 th\u00e2n th\u1eb3ng, tr\u00f2n \u0111\u1ec1u, \u0111\u1ed9 thon theo chi\u1ec1u d\u00e0i th\u00e2n nh\u1ecf, c\u00f3 ti\u1ec1m n\u0103ng s\u1ea3n xu\u1ea5t v\u00e1n b\u00f3c, g\u1ed7 x\u1ebb. G\u1ed7 D\u1ebb \u0111\u1ecf, B\u1eddi l\u1eddi v\u00e0ng c\u00f3 \u0111\u1ed9 b\u1ec1n t\u1ef1 nhi\u00ean k\u00e9m v\u1edbi n\u1ea5m m\u1ed1c. G\u1ed7 B\u1eddi l\u1eddi v\u00e0ng ch\u1ec9 \u0111\u1ea1t \u0111\u1ed9 b\u1ec1n trung b\u00ecnh v\u1edbi n\u1ea5m m\u1ee5c. Trong qu\u00e1 tr\u00ecnh hong ph\u01a1i ho\u1eb7c l\u01b0u kho, v\u00e1n m\u1ecfng t\u1eeb g\u1ed7 D\u1ebb \u0111\u1ecf v\u00e0 B\u1eddi l\u1eddi v\u00e0ng r\u1ea5t d\u1ec5 b\u1ecb x\u00e2m h\u1ea1i b\u1edfi n\u1ea5m m\u1ed1c, n\u1ea5m m\u1ee5c khi g\u1eb7p \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng c\u00f3 \u0111\u1ed9 \u1ea9m cao, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c c\u01a1 s\u1edf b\u00f3c v\u00e1n quy m\u00f4 nh\u1ecf kh\u00f4ng c\u00f3 thi\u1ebft b\u1ecb s\u1ea5y v\u00e0 ch\u1ebf bi\u1ebfn \u0111\u1ed3ng b\u1ed9. Nghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 hi\u1ec7u l\u1ef1c c\u00e1c lo\u1ea1i ch\u1ebf ph\u1ea9m b\u1ea3o qu\u1ea3n ph\u00f2ng ch\u1ed1ng n\u1ea5m m\u1ed1c, n\u1ea5m m\u1ee5c cho v\u00e1n m\u1ecfng D\u1ebb \u0111\u1ecf v\u00e0 B\u1eddi l\u1eddi v\u00e0ng l\u00e0m c\u01a1 s\u1edf khoa h\u1ecdc x\u00e2y d\u1ef1ng quy tr\u00ecnh c\u00f4ng ngh\u1ec7 b\u1ea3o qu\u1ea3n v\u00e1n. K\u1ebft qu\u1ea3 cho th\u1ea5y, x\u1eed l\u00fd t\u1ea9m s\u00e2u theo ph\u01b0\u01a1ng ph\u00e1p ng\u00e2m th\u01b0\u1eddng b\u1eb1ng ch\u1ebf ph\u1ea9m LN5 \u1edf m\u1ee9c 5-7% \u1edf t\u1ea5t c\u1ea3 c\u00e1c m\u1ee9c th\u1eddi gian x\u1eed l\u00fd 30 ph\u00fat, 60 ph\u00fat, 90 ph\u00fat \u0111\u1ec1u \u0111\u1ea3m b\u1ea3o hi\u1ec7u l\u1ef1c r\u1ea5t t\u1ed1t ph\u00f2ng ch\u1ed1ng n\u1ea5m m\u1ed1c, hi\u1ec7u l\u1ef1c t\u1ed1t ph\u00f2ng ch\u1ed1ng n\u1ea5m m\u1ee5c Trametes corrugata <\/em>T1. Khi b\u1ea3o qu\u1ea3n theo ph\u01b0\u01a1ng ph\u00e1p nh\u00fang b\u1eb1ng ch\u1ebf ph\u1ea9m BORAG2 <\/sub>trong th\u1eddi gian 1 ph\u00fat tr\u1edf l\u00ean ho\u1eb7c BORAG1<\/sub> trong th\u1eddi gian 40 gi\u00e2y tr\u1edf l\u00ean, \u0111\u1ec1u \u0111\u1ea3m b\u1ea3o hi\u1ec7u l\u1ef1c t\u1ed1t v\u00e0 r\u1ea5t t\u1ed1t ph\u00f2ng ch\u1ed1ng n\u1ea5m m\u1ed1c, hi\u1ec7u l\u1ef1c t\u1ed1t ph\u00f2ng ch\u1ed1ng n\u1ea5m m\u1ee5c Trametes corrugata <\/em>T1.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Ch\u1ebf ph\u1ea9m b\u1ea3o qu\u1ea3n g\u1ed7, v\u00e1n l\u1ea1ng, v\u00e1n b\u00f3c<\/td>\n<\/tr>\n

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<\/a>Studying on the protective effectiveness of slice veneers from Lithocarpus ducampii <\/em>A. Camus and peeled veneers from Litsea pierrei<\/em> Lecomte treated with preservations against mold and basydiomycetes fungi<\/strong><\/p>\n

Lithocarpus ducampii<\/em> A. Camus and Litsea pierrei<\/em> Lecomte are relatively fast growing native plants, prospect in forests providing large timber. With pink color, have a nice grain, Lithocarpus ducampii<\/em> A. Camus wood can be used for sawn timber and sliced veneer production. The logs of Litsea pierrei<\/em> Lecomte were relatively straight and the difference between ends of the logs in relation to diameter was small, potential for making sawn timber, peeled veneer. The natural durability of Litsea pierrei<\/em> Lecomte and Lithocarpus ducampii<\/em> a. Camus is less resistant to mould. Litsea pierrei<\/em> Lecomte has medium durability with basidiomycetes fungi. During drying or storage, veneer from those woods are easily attacked by mold, decay fungi under conditions of high environmental humidity, especially for factory without drying equipment. Study effectiveness of preservatives to prevent wood harmful organisms making a scientific basis for building a preservation technological process. Peeled veneers and sliced veneers were immersion in 30 – 90 minutes with LN5 concentration 5 – 7%, deliver the performance of accepatable level 0 with mold, good – grade with basidiomycetes Trametes corrugata <\/em>T1. In case of specimens were dipped in 1 minutes or more with BORAG2<\/sub>; in 40 seconds or more with BORAG1, deliver the performance of accepatable level 0 and 1 with mold, good – grade with basidiomycetes Trametes corrugata <\/em>T1.<\/p>\n

Keywords:<\/em><\/strong> Wood preservatives, sliced veneer, peeled veneer<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u00c1NH GI\u00c1 KH\u1ea2 N\u0102NG S\u1eec D\u1ee4NG G\u1ed6 C\u00c2Y CHI\u00caU LI\u00caU N\u01af\u1edaC\u00a0(Terminalia calamansanai<\/em> Rolfe)<\/p>\n

<\/a>Nguy\u1ec5n T\u1eed Kim1<\/sup>, Ph\u1ea1m Th\u1ebf D\u0169ng2<\/sup>, Nguy\u1ec5n Thanh Minh2<\/sup>,
\nNguy\u1ec5n Th\u1ecb Tr\u1ecbnh1<\/sup>, Nguy\u1ec5n Tr\u1ecdng Ngh\u0129a 1<\/sup><\/p>\n

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

C\u00e2y Chi\u00eau li\u00eau n\u01b0\u1edbc c\u00f3 t\u00ean khoa h\u1ecdc l\u00e0 Terminalia calamansanai<\/em> Rolfe thu\u1ed9c h\u1ecd B\u00e0ng (Combretaceae). Chi\u00eau li\u00eau n\u01b0\u1edbc c\u00f3 th\u1ec3 g\u1eb7p \u1edf m\u1ed9t s\u1ed1 n\u01b0\u1edbc nh\u01b0 Campuchia, Th\u00e1i Lan, Myanma, Philippin, Malaysia… \u1ede Vi\u1ec7t Nam, c\u00e2y m\u1ecdc \u1edf v\u00f9ng n\u00fai Nam Trung B\u1ed9, Gia Lai, Kontum v\u00e0 m\u1ecdc ph\u1ed5 bi\u1ebfn \u1edf c\u00e1c t\u1ec9nh mi\u1ec1n \u0110\u00f4ng Nam B\u1ed9, N\u00fai Dinh –\u00a0B\u00e0 R\u1ecba – V\u0169ng T\u00e0u, v\u00f9ng \u0111\u1ed3i n\u00fai th\u1ea5p, Ki\u00ean Giang, H\u00e0 Ti\u00ean, Ph\u00fa Qu\u1ed1c. Nghi\u00ean c\u1ee9u t\u00ednh ch\u1ea5t v\u1eadt l\u00fd, c\u01a1 h\u1ecdc g\u1ed7 Chi\u00eau li\u00eau n\u01b0\u1edbc g\u00f3p ph\u1ea7n cung c\u1ea5p c\u01a1 s\u1edf khoa h\u1ecdc cho vi\u1ec7c s\u1eed d\u1ee5ng g\u1ed7 lo\u00e0i c\u00e2y n\u00e0y hi\u1ec7u qu\u1ea3. K\u1ebft qu\u1ea3 cho th\u1ea5y, g\u1ed7 Chi\u00eau li\u00eau n\u01b0\u1edbc c\u00f3 nhi\u1ec1u t\u00ednh ch\u1ea5t v\u1eadt l\u00fd, c\u01a1 h\u1ecdc th\u1ea5p n\u00ean vi\u1ec7c s\u1eed d\u1ee5ng g\u1ed7 c\u00f3 th\u1ec3 cho nh\u1eefng m\u1ee5c \u0111\u00edch kh\u00f4ng \u0111\u00f2i h\u1ecfi ch\u1ecbu l\u1ef1c, ri\u00eang kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp t\u1ed1t n\u00ean c\u00f3 th\u1ec3 l\u00e0m t\u00e0u thuy\u1ec1n g\u1ed7 th\u00f4ng th\u01b0\u1eddng. Ph\u00f9 h\u1ee3p cho m\u1ee5c \u0111\u00edch l\u00e0m nguy\u00ean li\u1ec7u s\u1ea3n xu\u1ea5t v\u00e1n b\u00f3c, v\u00e1n gh\u00e9p thanh, t\u01b0\u01a1ng \u0111\u1ed1i ph\u00f9 h\u1ee3p \u0111\u1ec3 l\u00e0m nguy\u00ean li\u1ec7u s\u1ea3n xu\u1ea5t v\u00e1n l\u1ea1ng, \u0111\u1ed3 g\u1ed7 n\u1ed9i th\u1ea5t. G\u1ed7 Chi\u00eau li\u00eau n\u01b0\u1edbc t\u01b0\u01a1ng \u0111\u01b0\u01a1ng m\u1ed9t s\u1ed1 lo\u1ea1i g\u1ed7 x\u1ebfp nh\u00f3m V khi ph\u00e2n lo\u1ea1i theo c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 l\u00fd \u00e1p d\u1ee5ng cho c\u00e1c lo\u1ea1i g\u1ed7 d\u00f9ng \u0111\u1ec3 ch\u1ecbu l\u1ef1c ch\u1ee7 y\u1ebfu l\u00e0 trong x\u00e2y d\u1ef1ng v\u00e0 giao th\u00f4ng v\u1eadn t\u1ea3i. T\u1ef7 l\u1ec7 gi\u1eefa co r\u00fat theo ph\u01b0\u01a1ng ti\u1ebfp tuy\u1ebfn v\u00e0 xuy\u00ean t\u00e2m 1,3, h\u1ec7 s\u1ed1 co r\u00fat th\u1ec3 t\u00edch t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p n\u00ean thu\u1eadn l\u1ee3i trong qu\u00e1 tr\u00ecnh s\u1ea5y g\u1ed7. G\u1ed7 Chi\u00eau li\u00eau n\u01b0\u1edbc d\u1ec5 b\u1ecb n\u1ea5m bi\u1ebfn m\u00e0u t\u1ea5n c\u00f4ng ngay sau khi ch\u1eb7t h\u1ea1, do v\u1eady c\u1ea7n c\u00f3 bi\u1ec7n ph\u00e1p x\u1ebb, s\u1ea5y ngay sau khi khai th\u00e1c ho\u1eb7c x\u1eed l\u00fd b\u1ea3o qu\u1ea3n ch\u1ed1ng n\u1ea5m.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Chi\u00eau li\u00eau n\u01b0\u1edbc, t\u00ednh ch\u1ea5t v\u1eadt l\u00fd, t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc, s\u1eed d\u1ee5ng g\u1ed7<\/td>\n<\/tr>\n

\n

<\/a>Assessment of the possibility in wood utilization of Terminalia calamansanai<\/em> Rolfe<\/em><\/strong><\/p>\n

Terminalia calamansanai<\/em> Rolfe is a fast-growing species of the Combretaceae family. Terminalia calamansanai<\/em> can be found in some countries such as Cambodia, Thailand, Myanmar, Philippines, Malaysia …. In Vietnam, the tree grows in the South Central Coast, Gia Lai, Kon Tum and grows popular in the South-eastern provinces, Nui Dinh – Ba Ria – Vung Tau, low hills, Kien Giang, Ha Tien and Phu Quoc. Study on some physical, mechanical properties of wood, which contributes to provide a scientific information for the utilisation of this species is neccesary. The physical and mechanical properties are low and medium, so it can be used for a variety of purpose without the need for force. It is suitable for the purpose of materials for veneer and partical boards, relatively suitable for use as raw materials for producing planed veneer and indoor furniture. This wood is equivalent to some other wood classified Group V when classified according to the mechanical properties applied to the wood used in construction and transportation. The ratio between tangential and radial shrinkage is 1.3, the volumetric shrinkage coefficient is relatively low, so it is convenient for wood drying. This wood is susceptible to fading fungi immediately after felling, so it is necessary to take measures to saw and dry immediately after harvesting or treatment against fungi.<\/p>\n

Keywords:<\/em><\/strong> Terminalia calamansanai<\/em>, wood physical properties, wood machenical properties, wood utilization<\/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 4 – 2020 \u00a0 1. Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng c\u00e2y Ba k\u00edch (Morinda officinalis How) t\u1ea1i B\u1eafc Giang Study on propagation techniques of Morinda officinalis How in Bac Giang Kim Ng\u1ecdc Quang Nguy\u1ec5n Mai Th\u01a1m V\u00f5 \u0110\u1ea1i H\u1ea3i […]<\/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\/2185"}],"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=2185"}],"version-history":[{"count":5,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2185\/revisions"}],"predecessor-version":[{"id":2397,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2185\/revisions\/2397"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=2185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=2185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=2185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}