{"id":14118,"date":"2015-01-19T10:49:39","date_gmt":"2015-01-19T03:49:39","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=14118"},"modified":"2015-01-09T10:56:21","modified_gmt":"2015-01-09T03:56:21","slug":"bao-cao-ket-qua-nghi-dinh-thu-thu-thap-bao-ton-va-su-dung-nguon-gen-mot-so-loai-cay-go-ban-dia-o-viet-nam-va-trung-quoc","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/bao-cao-ket-qua-nghi-dinh-thu-thu-thap-bao-ton-va-su-dung-nguon-gen-mot-so-loai-cay-go-ban-dia-o-viet-nam-va-trung-quoc\/","title":{"rendered":"B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 ngh\u1ecb \u0111\u1ecbnh th\u01b0: thu th\u1eadp, b\u1ea3o t\u1ed3n v\u00e0 s\u1eed d\u1ee5ng ngu\u1ed3n gen m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y g\u1ed7 b\u1ea3n \u0111\u1ecba \u1edf Vi\u1ec7t Nam v\u00e0 Trung Qu\u1ed1c"},"content":{"rendered":"

Ch\u1ee7 nhi\u1ec7m: PGS.TS. Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a<\/em><\/p>\n

\u0110\u1eb6T V\u1ea6N \u0110\u1ec0<\/b><\/p>\n

B\u1ea3o v\u1ec7 v\u00e0 ph\u00e1t tri\u1ec3n r\u1eebng b\u1ec1n v\u1eefng l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 quan tr\u1ecdng \u1edf h\u1ea7u h\u1ebft c\u00e1c qu\u1ed1c gia tr\u00ean th\u1ebf gi\u1edbi. Vi\u1ec7c s\u1eed d\u1ee5ng h\u1ee3p l\u00fd ngu\u1ed3n t\u00e0i nguy\u00ean thi\u00ean nhi\u00ean lu\u00f4n \u0111i k\u00e8m v\u1edbi vi\u1ec7c b\u1ea3o v\u1ec7 v\u00e0 ph\u00e1t tri\u1ec3n ch\u00fang. \u1ede Vi\u1ec7t Nam vi\u1ec7c khai th\u00e1c v\u00e0 s\u1eed d\u1ee5ng r\u1eebng ch\u01b0a h\u1ee3p l\u00fd \u0111\u00e3 l\u00e0m cho di\u1ec7n t\u00edch r\u1eebng suy gi\u1ea3m kh\u00e1 nhanh, nh\u1eefng c\u00e1nh r\u1eebng c\u00f2n t\u1ed3n t\u1ea1i \u0111\u01b0\u1ee3c \u0111\u1ebfn nay th\u00ec ch\u1ea5t l\u01b0\u1ee3ng c\u0169ng b\u1ecb gi\u1ea3m m\u1ea1nh. C\u00e1c lo\u00e0i c\u00e2y g\u1ed7 qu\u00fd b\u1ea3n \u0111\u1ecba hi\u1ec7n \u0111ang b\u1ecb khai th\u00e1c ng\u00e0y m\u1ed9t t\u0103ng trong r\u1eebng t\u1ef1 nhi\u00ean. G\u1ed7 c\u1ee7a c\u00e1c lo\u00e0i n\u00e0y \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c lo\u1ea1i v\u00e1n nh\u00e2n t\u1ea1o ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 l\u00e0m \u0111\u1ed3 m\u1ed9c.<\/p>\n

Trong nh\u1eefng n\u0103m tr\u01b0\u1edbc \u0111\u00e2y \u1edf Vi\u1ec7t Nam v\u00e0 Trung Qu\u1ed1c, r\u1eebng t\u1ef1 nhi\u00ean b\u1ecb khai th\u00e1c ki\u1ec7t qu\u1ec7 v\u00ec l\u1ee3i \u00edch t\u1eeb th\u1ecb tr\u01b0\u1eddng g\u1ed7, \u0111\u00e3 d\u1eabn \u0111\u1ebfn ngu\u1ed3n gen c\u1ee7a nh\u1eefng lo\u00e0i c\u00e2y g\u1ed7 n\u00e0y gi\u1ea3m \u0111i nhanh ch\u00f3ng. Ch\u00ednh ph\u1ee7 Trung Qu\u1ed1c \u0111\u00e3 \u0111\u1ea7u t\u01b0 nghi\u00ean c\u1ee9u v\u1ec1 b\u1ea3o t\u1ed3n ngu\u1ed3n gen, tr\u1ed3ng r\u1eebng c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba v\u00e0 k\u1ef9 thu\u1eadt canh t\u00e1c nh\u1eefng lo\u00e0i c\u00e2y g\u1ed7 b\u1ea3n \u0111\u1ecba n\u00e0y v\u00e0 c\u0169ng \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 th\u00e0nh t\u1ef1u. Ch\u00ednh ph\u1ee7 Vi\u1ec7t nam \u0111ang th\u1ef1c hi\u1ec7n ch\u01b0\u01a1ng tr\u00ecnh ph\u1ee5c h\u1ed3i r\u1eebng r\u1ed9ng l\u1edbn th\u00f4ng qua d\u1ef1 \u00e1n 5 tri\u1ec7u ha r\u1eebng \u0111\u1ebfn n\u0103m 2010. Ch\u01b0\u01a1ng tr\u00ecnh ph\u1ee5c h\u1ed3i r\u1eebng t\u1ef1 nhi\u00ean \u0111ang \u0111\u01b0\u1ee3c ch\u00fa tr\u1ecdng v\u00e0 nghi\u00ean c\u1ee9u ph\u00e1t tri\u1ec3n c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba trong vi\u1ec7c l\u00e0m gi\u00e0u r\u1eebng l\u00e0 nh\u1eefng v\u1ea5n \u0111\u1ec1 c\u1ea5p b\u00e1ch hi\u1ec7n nay. T\u1eeb n\u0103m 1989 \u0111\u1ebfn nay, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p \u0111\u00e3 v\u00e0 \u0111ang ti\u1ebfn h\u00e0nh d\u1ef1 \u00e1n nghi\u00ean c\u1ee9u v\u1ec1 b\u1ea3o t\u1ed3n ngu\u1ed3n gen c\u00e2y r\u1eebng. Trong chuy\u1ebfn l\u00e0m vi\u1ec7c m\u1edbi \u0111\u00e2y, c\u00e1c nh\u00e0 khoa h\u1ecdc Trung Qu\u1ed1c v\u00e0 Vi\u1ec7t Nam \u0111\u00e3 th\u1ea3o lu\u1eadn s\u1eed d\u1ee5ng c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba \u0111\u1ec3 tr\u1ed3ng r\u1eebng v\u00e0 h\u1ee3p t\u00e1c trong l\u0129nh v\u1ef1c x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh kh\u1ea3o nghi\u1ec7m v\u1edbi c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba c\u1ee7a hai n\u01b0\u1edbc.<\/p>\n

D\u1ef1 \u00e1n n\u00e0y c\u00f3 quan h\u1ec7 ch\u1eb7t ch\u1ebd v\u1edbi nhu c\u1ea7u v\u1ec1 g\u1ed7 tr\u00ean th\u1ecb tr\u01b0\u1eddng qu\u1ed1c t\u1ebf, \u0111\u1eb7c bi\u1ec7t ph\u00f9 h\u1ee3p v\u1edbi m\u1ee5c ti\u00eau, n\u1ed9i dung v\u1edbi chi\u1ebfn l\u01b0\u1ee3c ph\u00e1t tri\u1ec3n l\u00e2m nghi\u1ec7p v\u00e0 x\u00e2y d\u1ef1ng ch\u00ednh s\u00e1ch c\u1ee7a c\u1ea3 hai n\u01b0\u1edbc. N\u00f3 s\u1ebd th\u00fac \u0111\u1ea9y vi\u1ec7c g\u00e2y tr\u1ed3ng r\u1ed9ng r\u00e3i c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba v\u00e0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng r\u1eebng tr\u1ed3ng nhi\u1ec7t \u0111\u1edbi.<\/p>\n

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

N\u1ed8I DUNG V\u00c0 PH\u01af\u01a0NG PH\u00c1P NGHI\u00caN C\u1ee8U<\/b><\/p>\n

2<\/b>.<\/b>3<\/b>.<\/b> N\u1ed9i dung nghi\u00ean c\u1ee9u<\/b><\/p>\n

2.3.1. T\u00ecm hi\u1ec3u v\u1ec1 v\u1eadt h\u1eadu h\u1ecdc v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m sinh th\u00e1i c\u00e1c lo\u00e0i c\u00e2y g\u1ed7 C\u00e1ng l\u00f2, M\u1ee1 v\u00e0 M\u1ee1 H\u1ea3i Nam<\/p>\n

–\u00a0 T\u00ecm hi\u1ec3u v\u1ec1 v\u1eadt h\u1eadu h\u1ecdc<\/b>: Tr\u00ean c\u01a1 s\u1edf c\u00e1c t\u00e0i li\u1ec7u hi\u1ec7n c\u00f3, x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c th\u1eddi \u0111i\u1ec3m ra hoa k\u1ebft qu\u1ea3 c\u1ee7a 3 lo\u00e0i c\u00e2y thu h\u00e1i h\u1ea1t gi\u1ed1ng: M\u1ee1, M\u1ee1 H\u1ea3i Nam v\u00e0 C\u00e1ng l\u00f2.<\/p>\n

–\u00a0 \u0110\u1eb7c \u0111i\u1ec3m sinh th\u00e1i c\u00e1c lo\u00e0i nghi\u00ean c\u1ee9u<\/b>: \u0110\u1eb7c \u0111i\u1ec3m ph\u00e2n b\u1ed1, \u0111\u1eb7c \u0111i\u1ec3m v\u1ec1 t\u1ed5 th\u00e0nh, c\u1ea5u tr\u00fac c\u1ee7a r\u1eebng t\u1ef1 nhi\u00ean \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n l\u00e0m c\u01a1 s\u1edf cho vi\u1ec7c gieo \u01b0\u01a1m v\u00e0 tr\u1ed3ng kh\u1ea3o nghi\u1ec7m.<\/p>\n

2.3.2. Thu th\u1eadp v\u00e0 trao \u0111\u1ed5i h\u1ea1t gi\u1ed1ng theo xu\u1ea5t x\u1ee9 c\u1ee7a m\u1ed7i lo\u00e0i<\/p>\n

– S\u1ed1 l\u01b0\u1ee3ng lo\u00e0i\/xu\u1ea5t x\u1ee9 c\u1ea7n thu th\u1eadp<\/b><\/p>\n

S\u1ed1 l\u01b0\u1ee3ng lo\u00e0i\/ xu\u1ea5t x\u1ee9 thu th\u1eadp d\u1ef1 ki\u1ebfn nh\u01b0 sau:<\/p>\n

Trung Qu\u1ed1c: C\u00e0ng l\u00f2: 5 xu\u1ea5t x\u1ee9, Gi\u1ed5i x\u01b0\u01a1ng: 5 xu\u1ea5t x\u1ee9, L\u00e1t hoa: 5 xu\u1ea5t x\u1ee9, m\u1ee1: 0, M\u1ee1 H\u1ea3i Nam: 5<\/p>\n

Vi\u00eat Nam: C\u00e0ng l\u00f2: 3 xu\u1ea5t x\u1ee9, Gi\u1ed5i x\u01b0\u01a1ng: 0 xu\u1ea5t x\u1ee9, L\u00e1t hoa: 5 xu\u1ea5t x\u1ee9, m\u1ee1: 5, M\u1ee1 H\u1ea3i Nam: 1<\/p>\n

–\u00a0 \u0110\u1ecba \u0111i\u1ec3m d\u1ef1 ki\u1ebfn thu th\u1eadp h\u1ea1t gi\u1ed1ng c\u00e1c lo\u00e0i c\u00e2y nghi\u00ean c\u1ee9u nh\u01b0 sau: <\/b><\/p>\n

+ 3 xu\u1ea5t x\u1ee9 c\u00e2y C\u00e1ng l\u00f2 \u0111\u01b0\u1ee3c thu th\u1eadp t\u1ea1i: S\u01a1n La (2 \u0111i\u1ec3m) v\u00e0 H\u00e0 Giang<\/p>\n

+ 5 xu\u1ea5t x\u1ee9 L\u00e1t hoa thu th\u1eadp t\u1ea1i: Ho\u00e0 B\u00ecnh, S\u01a1n La, Tuy\u00ean Quang, Thanh Ho\u00e1, Ngh\u1ec7 An (do Trung t\u00e2m NC gi\u1ed1ng c\u00e2y r\u1eebng th\u1ef1c hi\u1ec7n).<\/p>\n

+ 5 xu\u1ea5t x\u1ee9 M\u1ee1 \u0111\u01b0\u1ee3c thu th\u1eadp t\u1ea1i: Ph\u00fa Th\u1ecd, Tuy\u00ean Quang (2 \u0111i\u1ec3m), H\u00e0 Giang v\u00e0 L\u00e0o Cai.<\/p>\n

+ 1 xu\u1ea5t x\u1ee9 M\u1ee1 H\u1ea3i Nam \u0111\u01b0\u1ee3c thu th\u1eadp t\u1ea1i VQG Ba V\u00ec, H\u00e0 N\u1ed9i.<\/p>\n

2.3.3. Gieo \u01b0\u01a1m v\u00e0 t\u1ea1o c\u00e2y con<\/p>\n

– X\u00e1c \u0111\u1ecbnh t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m:<\/b><\/p>\n

H\u1ea1t gi\u1ed1ng c\u00e1c lo\u00e0i nghi\u00ean c\u1ee9u (C\u00e1ng l\u00f2, Gi\u1ed5i x\u01b0\u01a1ng v\u00e0 M\u1ee1 H\u1ea3i Nam)<\/p>\n

– \u01af\u01a1m t\u1ea1o c\u00e2y con ph\u1ee5c v\u1ee5 tr\u1ed3ng kh\u1ea3o nghi\u1ec7m: <\/i><\/b><\/p>\n

\u01af\u01a1m <\/b>t\u1ea1o c\u00e2y con \u0111\u1ee7 \u0111\u1ec3 tr\u1ed3ng 8,0 ha.<\/p>\n

2.3.4.\u00a0 Tr\u1ed3ng kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9, h\u1eadu th\u1ebf v\u00e0 khu b\u1ea3o t\u1ed3n gen<\/p>\n

Hai lo\u00e0i c\u00e2y M\u1ee1 H\u1ea3i Nam v\u00e0 Gi\u1ed5i x\u01b0\u01a1ng tr\u1ed3ng t\u1ea1i Tr\u1ea1m th\u1ef1c nghi\u1ec7m l\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7 Ho\u00e0nh B\u1ed3, Qu\u1ea3ng Ninh thu\u1ed9c Trung t\u00e2m NC L\u00e2m \u0111\u1eb7c s\u1ea3n, Vi\u1ec7n Khoa h\u1ecdc l\u00e2m nghi\u1ec7p Vi\u1ec7t Nam.<\/p>\n

Lo\u00e0i C\u00e1ng l\u00f2 tr\u1ed3ng t\u1ea1i Tr\u1ea1m l\u00e2m sinh Chi\u1ec1ng B\u00f4m, Thu\u1eadn Ch\u00e2u, S\u01a1n La thu\u1ed9c Trung t\u00e2m khoa h\u1ecdc s\u1ea3n xu\u1ea5t L\u00e2m nghi\u1ec7p v\u00f9ng T\u00e2y B\u1eafc, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam.<\/p>\n

2.3.5. \u0110\u00e1nh gi\u00e1 \u0111a d\u1ea1ng di truy\u1ec1n ngu\u1ed3n gen c\u1ee7a c\u00e1c lo\u00e0i c\u00e2y nghi\u00ean c\u1ee9u<\/p>\n

\u0110\u00e1nh gi\u00e1 \u0111a d\u1ea1ng di truy\u1ec1n ngu\u1ed3n gen c\u1ee7a c\u00e1c lo\u00e0i c\u00e2y nghi\u00ean c\u1ee9u b\u1eb1ng ph\u00e2n t\u00edch ch\u1ec9 th\u1ecb ph\u00e2n t\u1eed RAPD v\u00e0 cpADN (ADN l\u1ee5c l\u1ea1p) do Vi\u1ec7n C\u00f4ng ngh\u1ec7 sinh h\u1ecdc th\u1ef1c hi\u1ec7n.<\/p>\n

– Ph\u00e2n t\u00edch ADN c\u1ee7a genome (b\u1ed9 gen) b\u1eb1ng ch\u1ec9 th\u1ecb ph\u00e2n t\u1eed RAPD v\u00e0 cpADN<\/b><\/p>\n

+ C\u00e2y C\u00e1ng l\u00f2: 150 m\u1eabu (130 cho RAPD v\u00e0 20 cho cpADN)<\/p>\n

+ C\u00e2y Gi\u1ed5i x\u01b0\u01a1ng: 150 m\u1eabu (130 cho RAPD v\u00e0 20 cho cpADN)<\/p>\n

+ C\u00e2y M\u1ee1 H\u1ea3i Nam: 60 m\u1eabu (50 cho RAPD v\u00e0 10 cho cpADN)<\/p>\n

2.3.6. H\u1ecdc t\u1eadp v\u00e0 H\u1ed9i th\u1ea3o t\u1ea1i Vi\u1ec7t Nam v\u00e0 Trung Qu\u1ed1c.<\/p>\n

–\u00a0 \u0110o\u00e0n ra l\u1ea7n th\u1ee9 nh\u1ea5t th\u1ed1ng nh\u1ea5t v\u1ec1 k\u1ebf ho\u1ea1ch th\u1ef1c hi\u1ec7n d\u1ef1 \u00e1n<\/b><\/p>\n

\u0110o\u00e0n ra g\u1ed3m 3 ng\u01b0\u1eddi trong 5 ng\u00e0y l\u00e0m vi\u1ec7c t\u1ea1i Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m nghi\u1ec7p Nhi\u1ec7t \u0111\u1edbi, Qu\u1ea3ng Ch\u00e2u, Trung Qu\u1ed1c th\u1ed1ng nh\u1ea5t v\u1ec1 k\u1ebf ho\u1ea1ch nghi\u00ean c\u1ee9u.<\/p>\n

–\u00a0 \u0110o\u00e0n ra l\u1ea7n th\u1ee9 2 h\u1ecdc t\u1eadp ki\u1ebfn th\u1ee9c v\u00e0 kinh nghi\u1ec7m c\u1ee7a Trung Qu\u1ed1c<\/b><\/p>\n

\u0110o\u00e0n ra g\u1ed3m 4 ng\u01b0\u1eddi\u00a0th\u0103m c\u00e1c m\u00f4 h\u00ecnh kh\u1ea3o nghi\u1ec7m v\u00e0 h\u1ecdc t\u1eadp kinh nghi\u1ec7m v\u1ec1 b\u1ea3o t\u1ed3n ngu\u1ed3n gen c\u00e2y r\u1eebng t\u1ea1i Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m nghi\u1ec7p Nhi\u1ec7t \u0111\u1edbi, Qu\u1ea3ng Ch\u00e2u, Trung Qu\u1ed1c.<\/p>\n

– T\u1ed5 ch\u1ee9c H\u1ed9i th\u1ea3o t\u1ea1i Vi\u1ec7t Nam<\/b>:<\/p>\n

T\u1ed5 ch\u1ee9c H\u1ed9i th\u1ea3o, th\u00f4ng b\u00e1o nh\u1eefng k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u1ee7a \u0111\u1ec1 t\u00e0i (th\u1eddi gian 1 ng\u00e0y s\u1ed1 l\u01b0\u1ee3ng 20 ng\u01b0\u1eddi).<\/p>\n

2<\/b>.<\/b>4<\/b>.<\/b> V\u1eadt li\u1ec7u v\u00e0 ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u<\/b><\/p>\n

2.4.1. V\u1eadt li\u1ec7u nghi\u00ean c\u1ee9u<\/p>\n

– V\u1eadt li\u1ec7u nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m v\u1eadt h\u1eadu h\u1ecdc v\u00e0 sinh th\u00e1i h\u1ecdc<\/b><\/p>\n

C\u00e1ng l\u00f2 (Betula alnoides<\/i> Buch-Ham), M\u1ee1 H\u1ea3i Nam (Manglietia hainanensis<\/i> Dandy), M\u1ee1 (Manglietia conifera <\/i>Dandy).<\/p>\n

– V\u1eadt li\u1ec7u nghi\u00ean c\u1ee9u v\u1ec1 gieo \u01b0\u01a1m v\u00e0 t\u1ea1o c\u00e2y con\u00a0:<\/b>C\u00e1ng l\u00f2 (Betula alnoides<\/i> Buch-Ham), M\u1ee1 H\u1ea3i Nam (Manglietia hainanensis<\/i> Dandy), Gi\u1ed5i x\u01b0\u01a1ng (Michelia baillonii <\/i>(Pierre) Hu)<\/p>\n

– V\u1eadt li\u1ec7u nghi\u00ean c\u1ee9u ch\u1ec9 th\u1ecb ph\u00e2n t\u1eed\u00a0:<\/b>M\u1eabu l\u00e1 c\u00e2y C\u00e1ng l\u00f2 (xu\u1ea5t x\u1ee9 Trung Qu\u1ed1c v\u00e0 Vi\u1ec7t Nam tr\u1ed3ng \u1edf S\u01a1n La), M\u1ee1 H\u1ea3i Nam (xu\u1ea5t x\u1ee9 Trung Qu\u1ed1c v\u00e0 Vi\u1ec7t Nam tr\u1ed3ng \u1edf Qu\u1ea3ng Ninh), Gi\u1ed5i x\u01b0\u01a1ng (xu\u1ea5t x\u1ee9 Trung Qu\u1ed1c tr\u1ed3ng \u1edf Qu\u1ea3ng Ninh)<\/p>\n

2.4.2. Ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra kh\u1ea3o s\u00e1t\u00a0: Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u t\u00e0i li\u1ec7u, ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u \u0111a d\u1ea1ng di truy\u1ec1n v\u00e0 quan h\u1ec7 di truy\u1ec1n<\/p>\n

K\u1ebeT QU\u1ea2 NGHI\u00caN C\u1ee8U V\u00c0 TH\u1ea2O LU\u1eacN<\/b><\/p>\n

1. T\u00ecm hi\u1ec3u v\u1ec1 v\u1eadt h\u1eadu h\u1ecdc v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m sinh th\u00e1i c\u00e1c lo\u00e0i c\u00e2y g\u1ed7 C\u00e1ng l\u00f2, M\u1ee1, M\u1ee1 H\u1ea3i Nam<\/b><\/p>\n

1.1. Nghi\u00ean c\u1ee9u v\u1eadt h\u1eadu h\u1ecdc v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m sinh th\u00e1i h\u1ecdc c\u00e2y C\u00e1ng l\u00f2 (<\/i>Betula alnoides <\/i>Buch – Ham)<\/i><\/b><\/p>\n

1.1.1. \u0110\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc c\u1ee7a c\u00e2y C\u00e1ng l\u00f2<\/p>\n

\u0110\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i:<\/i> C\u00e2y g\u1ed7 nh\u1ee1, c\u00f3 th\u1ec3 cao 25m, \u0111\u01b0\u1eddng k\u00ednh 60cm.<\/p>\n

\u0110\u1eb7c \u0111i\u1ec3m v\u1eadt h\u1eadu h\u1ecdc:<\/i> L\u00e0 c\u00e2y m\u1ecdc nhanh, ti\u00ean phong \u01b0a s\u00e1ng, r\u1ee5ng l\u00e1. T\u00e1i sinh t\u1ef1 nhi\u00ean t\u1ed1t n\u01a1i \u0111\u1ea5t tr\u1ed1ng. Gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng<\/i><\/p>\n

G\u1ed7 c\u00f3 th\u00e0nh ph\u1ea7n c\u01a1 l\u00fd t\u1ed1t, d\u00f9ng l\u00e0m v\u00e1n l\u1ea1ng v\u00e0 \u0111\u00f3ng \u0111\u1ed3 d\u00f9ng trong nh\u00e0.<\/p>\n

1.1.2. \u0110\u1eb7c \u0111i\u1ec3m sinh th\u00e1i<\/p>\n

Lo\u00e0i ph\u00e2n b\u1ed1 r\u1ed9ng t\u1eeb Trung Qu\u1ed1c, Mi\u1ebfn \u0110i\u1ec7n, L\u00e0o, \u1ea4n \u0110\u1ed9, Th\u00e1i Lan \u0111\u1ebfn Vi\u1ec7t Nam (Zeng Jie et al<\/i>., 1999).<\/p>\n

1.1.3. K\u1ef9 thu\u1eadt thu h\u00e1i v\u00e0 ch\u1ebf bi\u1ebfn h\u1ea1t gi\u1ed1ng<\/p>\n

K\u1ef9 thu\u1eadt thu h\u00e1i h\u1ea1t gi\u1ed1ng:<\/i>C\u00e2y b\u1eaft \u0111\u1ea7u ra hoa \u1edf tu\u1ed5i 5 v\u00e0 6, gi\u1ed1ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c thu t\u1eeb c\u00e1c l\u00e2m ph\u1ea7n 8 tu\u1ed5i tr\u1edf l\u00ean.<\/p>\n

K\u1ef9 thu\u1eadt ch\u1ebf bi\u1ebfn h\u1ea1t gi\u1ed1ng:<\/i>Sau khi thu h\u00e1i qu\u1ea3 t\u1ea1i r\u1eebng, qu\u1ea3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i, nh\u1eefng qu\u1ea3 ch\u01b0a ch\u00edn \u0111\u01b0\u1ee3c \u1ee7 l\u1ea1i th\u00e0nh \u0111\u1ed1ng trong 2 \u0111\u1ebfn 3 ng\u00e0y cho qu\u1ea3 ch\u00edn \u0111\u1ec1u<\/p>\n

B\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng:<\/i>Theo kinh nghi\u1ec7m c\u1ee7a c\u00e1c nh\u00e0 khoa h\u1ecdc Trung Qu\u1ed1c, b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng c\u00e2y C\u00e1ng l\u00f2 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng 3 ph\u01b0\u01a1ng ph\u00e1p: b\u1ea3o qu\u1ea3n kh\u00f4, \u0111\u00f3ng g\u00f3i h\u00e0n k\u00edn v\u00e0 b\u1ea3o qu\u1ea3n d\u01b0\u1edbi nhi\u1ec7t \u0111\u1ed9 th\u1ea5p kh\u00e1c nhau<\/p>\n

Ki\u1ec3m nghi\u1ec7m h\u1ea1t gi\u1ed1ng<\/i><\/p>\n

1.2. T\u00ecm hi\u1ec3u v\u1eadt h\u1eadu h\u1ecdc v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m sinh th\u00e1i h\u1ecdc c\u00e2y M\u1ee1 (Manglietia conifera<\/i> Dandy)<\/b><\/p>\n

1.2.1. \u0110\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc c\u1ee7a c\u00e2y M\u1ee1<\/p>\n

\u0110\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i:<\/i>C\u00e2y g\u1ed7 cao 20 – 25m. Th\u00e2n th\u1eb3ng, tr\u00f2n, t\u00e1n h\u00ecnh ch\u00f3p.<\/p>\n

\u0110\u1eb7c \u0111i\u1ec3m v\u1eadt h\u1eadu h\u1ecdc:<\/i>M\u1ee1 sinh tr\u01b0\u1edfng t\u01b0\u01a1ng \u0111\u1ed1i nhanh tr\u00ean c\u00e1c l\u1eadp \u0111\u1ecba c\u00f2n t\u1ed1t.<\/p>\n

Gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng: <\/i>G\u1ed7 c\u00f3 d\u00e1c l\u00f5i ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng, d\u00e1c m\u00e0u x\u00e1m nh\u1ea1t,<\/p>\n

1.2.2. \u0110\u1eb7c \u0111i\u1ec3m sinh th\u00e1i<\/p>\n

C\u00e2y m\u1ecdc r\u1ea3i r\u00e1c trong c\u00e1c r\u1eebng nguy\u00ean sinh ho\u1eb7c th\u1ee9 sinh \u1edf m\u1ed9t s\u1ed1 t\u1ec9nh nh\u01b0 L\u00e0o Cai, Y\u00ean B\u00e1i, H\u00e0 Giang, Tuy\u00ean Quang, V\u0129nh Ph\u00fac, Ph\u00fa Th\u1ecd, H\u00f2a B\u00ecnh, H\u00e0 T\u00e2y, Thanh Ho\u00e1, Ngh\u1ec7 An, H\u00e0 T\u0129nh…<\/p>\n

1.2.3. K\u1ef9 thu\u1eadt thu h\u00e1i v\u00e0 ch\u1ebf bi\u1ebfn h\u1ea1t gi\u1ed1ng<\/p>\n

K\u1ef9 thu\u1eadt thu h\u00e1i h\u1ea1t gi\u1ed1ng:<\/i>C\u00e2y b\u1eaft \u0111\u1ea7u ra hoa \u1edf tu\u1ed5i 5 v\u00e0 6, gi\u1ed1ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c thu t\u1eeb c\u00e1c l\u00e2m ph\u1ea7n 8 tu\u1ed5i tr\u1edf l\u00ean, chu k\u1ef3 sai qu\u1ea3 2-3 n\u0103m<\/p>\n

K\u1ef9 thu\u1eadt ch\u1ebf bi\u1ebfn h\u1ea1t gi\u1ed1ng:<\/i>Sau khi thu h\u00e1i qu\u1ea3 t\u1ea1i r\u1eebng, qu\u1ea3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i, nh\u1eefng qu\u1ea3 ch\u01b0a ch\u00edn \u0111\u01b0\u1ee3c \u1ee7 l\u1ea1i th\u00e0nh \u0111\u1ed1ng trong 2 \u0111\u1ebfn 3 ng\u00e0y cho qu\u1ea3 ch\u00edn \u0111\u1ec1u.<\/p>\n

1.2.4. B\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng<\/p>\n

B\u1ea3o qu\u1ea3n trong c\u00e1t \u1ea9m \u1edf nhi\u1ec7t \u0111\u1ed9 b\u00ecnh th\u01b0\u1eddng:<\/i>\u0110\u1ed9 \u1ea9m c\u1ee7a h\u1ea1t khi \u0111\u01b0a v\u00e0o b\u1ea3o qu\u1ea3n t\u1eeb 24-25<\/p>\n

B\u1ea3o qu\u1ea3n trong t\u00fai PE, \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p:<\/i>\u0110\u1ed9 \u1ea9m c\u1ee7a h\u1ea1t khi \u0111\u01b0a v\u00e0o b\u1ea3o qu\u1ea3n t\u1eeb 15-20<\/p>\n

Ki\u1ec3m nghi\u1ec7m h\u1ea1t gi\u1ed1ng<\/i><\/p>\n

1.3. T\u00ecm hi\u1ec3u v\u1eadt h\u1eadu h\u1ecdc v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m sinh th\u00e1i h\u1ecdc c\u00e2y M\u1ee1 H\u1ea3i Nam (Manglietia hainanensis<\/i> Dandy)<\/b><\/p>\n

1.3.1. \u0110\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc c\u1ee7a c\u00e2y M\u1ee1 H\u1ea3i Nam<\/p>\n

\u0110\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i c\u1ee7a c\u00e2y M\u1ee1 H\u1ea3i Nam:<\/i>C\u00e2y th\u01b0\u1eddng xanh, cao 20 \u2013 25 m, \u0111\u01b0\u1eddng k\u00ednh 50 \u2013 60 cm, c\u00f3 c\u00e2y \u0111\u1ebfn tr\u00ean 80.<\/p>\n

\u0110\u1eb7c \u0111i\u1ec3m v\u1ec1 v\u1eadt h\u1eadu h\u1ecdc c\u1ee7a c\u00e2y M\u1ee1 H\u1ea3i Nam:<\/i>M\u1ee1 H\u1ea3i Nam th\u01b0\u1eddng m\u1ecdc \u1edf r\u1eebng nhi\u1ec7t \u0111\u1edbi \u1ea9m th\u01b0\u1eddng xanh.<\/p>\n

M\u1ee1 H\u1ea3i Nam l\u00e0 c\u00e2y th\u01b0\u1eddng xanh, sinh tr\u01b0\u1edfng nh\u1ecbp \u0111i\u1ec7u, thay l\u00e1 nhi\u1ec1u t\u1eeb th\u00e1ng 11, 12 \u0111\u1ebfn th\u00e1ng 2, 3 n\u0103m sau.<\/p>\n

Gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng:<\/i>G\u1ed7 c\u00f3 gi\u00e1c l\u00f5i ph\u00e2n bi\u1ec7t, l\u00f5i to, m\u00e0u v\u00e0ng n\u00e2u, gi\u00e1c v\u00e0ng pha n\u00e2u.<\/p>\n

1.3.2. \u0110\u1eb7c \u0111i\u1ec3m sinh th\u00e1i c\u1ee7a c\u00e2y M\u1ee1 H\u1ea3i Nam<\/p>\n

C\u00e2y m\u1ecdc trong r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh nhi\u1ec7t \u0111\u1edbi, tr\u1ea1ng th\u00e1i nguy\u00ean sinh v\u00e0 th\u1ee9 sinh, \u0111\u1ecba h\u00ecnh \u0111\u1ed3i, n\u00fai v\u1edbi \u0111\u1ed9 cao 700-1300 m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n<\/p>\n

1.3.3. K\u1ef9 thu\u1eadt thu h\u00e1i v\u00e0 ch\u1ebf bi\u1ebfn h\u1ea1t gi\u1ed1ng<\/p>\n

K\u1ef9 thu\u1eadt thu h\u00e1i h\u1ea1t gi\u1ed1ng:<\/i>C\u00e2y b\u1eaft \u0111\u1ea7u ra hoa \u1edf tu\u1ed5i 8-10, gi\u1ed1ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c thu t\u1eeb c\u00e1c l\u00e2m ph\u1ea7n 10 tu\u1ed5i tr\u1edf l\u00ean, chu k\u1ef3 sai qu\u1ea3 2-3 n\u0103m.<\/p>\n

K\u1ef9 thu\u1eadt ch\u1ebf bi\u1ebfn h\u1ea1t gi\u1ed1ng:<\/i>Sau khi thu h\u00e1i qu\u1ea3 t\u1ea1i r\u1eebng, qu\u1ea3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i, nh\u1eefng qu\u1ea3 ch\u01b0a ch\u00edn \u0111\u01b0\u1ee3c \u1ee7 l\u1ea1i th\u00e0nh \u0111\u1ed1ng trong 2 \u0111\u1ebfn 3 ng\u00e0y cho qu\u1ea3 ch\u00edn \u0111\u1ec1u.<\/p>\n

1.3.4. K\u1ef9 thu\u1eadt b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng<\/p>\n

B\u1ea3o qu\u1ea3n trong c\u00e1t \u1ea9m \u1edf nhi\u1ec7t \u0111\u1ed9 b\u00ecnh th\u01b0\u1eddng:<\/i>\u0110\u1ed9 \u1ea9m c\u1ee7a h\u1ea1t khi \u0111\u01b0a v\u00e0o b\u1ea3o qu\u1ea3n t\u1eeb 24-25%. H\u1ea1t \u0111\u01b0\u1ee3c tr\u1ed9n \u0111\u1ec1u v\u1edbi c\u00e1t c\u00f3 \u0111\u1ed9 \u1ea9m t\u1eeb 15-16% theo t\u1ef7 l\u1ec7 1 h\u1ea1t + 2 c\u00e1t (theo th\u1ec3 t\u00edch), h\u1ea1t b\u1ea3o qu\u1ea3n \u0111\u01b0\u1ee3c \u0111\u00e1nh th\u00e0nh t\u1eebng lu\u1ed1ng, cao kh\u00f4ng qu\u00e1 20 cm, b\u1ec1 r\u1ed9ng lu\u1ed1ng t\u1eeb 80-100 cm.<\/p>\n

B\u1ea3o qu\u1ea3n trong t\u00fai PE, \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p:<\/i>\u0110\u1ed9 \u1ea9m c\u1ee7a h\u1ea1t khi \u0111\u01b0a v\u00e0o b\u1ea3o qu\u1ea3n t\u1eeb 15-20%.<\/p>\n

Ki\u1ec3m nghi\u1ec7m h\u1ea1t gi\u1ed1ng<\/i><\/p>\n

2<\/b>.<\/b> Thu th\u1eadp v\u00e0 trao \u0111\u1ed5i h\u1ea1t gi\u1ed1ng v\u1edbi \u0111\u1ed1i t\u00e1c Trung Qu\u1ed1c<\/b><\/p>\n

2.1. Vi\u1ec7t Nam thu h\u1ea1t gi\u1ed1ng v\u00e0 cung c\u1ea5p cho \u0111\u1ed1i t\u00e1c Trung Qu\u1ed1c<\/b><\/p>\n

2.1.1. H\u1ea1t gi\u1ed1ng c\u00e2y C\u00e1ng l\u00f2 (Betula alnoides<\/i>):Vi\u1ec7t Nam \u0111\u00e3 thu h\u1ea1t gi\u1ed1ng c\u00e2y C\u00e1ng l\u00f2 t\u1eeb 3 xu\u1ea5t x\u1ee9 l\u00e0 Chi\u1ec1ng B\u00f4m (S\u01a1n La), C\u00f2 M\u1ea1 (S\u01a1n La) v\u00e0 Y\u00ean Minh (H\u00e0 Giang).<\/p>\n

2.1.2. H\u1ea1t gi\u1ed1ng c\u00e2y M\u1ee1 (Manglietia conifera<\/i>):Vi\u1ec7t Nam \u0111\u00e3 thu h\u1ea1t gi\u1ed1ng c\u00e2y M\u1ee1 t\u1eeb 5 xu\u1ea5t x\u1ee9 l\u00e0 C\u1ea7u Hai ( Ph\u00fa Th\u1ecd), H\u00e0m Y\u00ean (Tuy\u00ean Quang), Na Hang (Tuy\u00ean Quang), V\u1ecb Xuy\u00ean (H\u00e0 Giang) v\u00e0 B\u00e1t X\u00e1t (L\u00e0o Cai).<\/p>\n

2.1.3. H\u1ea1t gi\u1ed1ng c\u00e2y L\u00e1t hoa (Chukrasia tabularis<\/i>):Trung t\u00e2m nghi\u00ean c\u1ee9u gi\u1ed1ng c\u00e2y r\u1eebng \u0111\u00e3 thu h\u1ea1t gi\u1ed1ng c\u00e2y L\u00e1t hoa t\u1eeb 5 xu\u1ea5t x\u1ee9 l\u00e0 B\u00ecnh Thanh (H\u00f2a B\u00ecnh), Thu\u1eadn Ch\u00e2u (S\u01a1n La), Ng\u1ecdc L\u1eb7c (Thanh H\u00f3a), Chi\u00eam H\u00f3a (Tuy\u00ean Quang) v\u00e0 Y\u00ean Th\u00e0nh (Ngh\u1ec7 An).<\/p>\n

2.1.4. H\u1ea1t gi\u1ed1ng c\u00e2y M\u1ee1 H\u1ea3i Nam (Manglietia hainanensis<\/i>):Vi\u1ec7t Nam \u0111\u00e3 thu h\u1ea1t gi\u1ed1ng c\u00e2y M\u1ee1 H\u1ea3i Nam t\u1eeb 1 xu\u1ea5t x\u1ee9 l\u00e0 Ba V\u00ec (VQG Ba V\u00ec, H\u00e0 N\u1ed9i).<\/p>\n

2.2. Trung Qu\u1ed1c thu h\u1ea1t gi\u1ed1ng v\u00e0 cung c\u1ea5p cho Vi\u1ec7t Nam<\/b><\/p>\n

2.2.1. H\u1ea1t gi\u1ed1ng c\u00e2y C\u00e1ng l\u00f2 (Betula alnoides<\/i>):Trung Qu\u1ed1c \u0111\u00e3 thu h\u1ea1t gi\u1ed1ng c\u00e2y C\u00e1ng l\u00f2 t\u1eeb 5 xu\u1ea5t x\u1ee9 g\u1ed3m Lingyun (Guangxi), Ceheng (Guizhou), Menghai (Yunnan), Tengchong (Yunnan) v\u00e0 Mengla (Yunnan<\/p>\n

2.1.2. H\u1ea1t gi\u1ed1ng c\u00e2y L\u00e1t hoa (Chukrasia tabularis<\/i>):Trung Qu\u1ed1c \u0111\u00e3 thu v\u00e0 b\u00e0n giao cho Vi\u1ec7t Nam 5 xu\u1ea5t x\u1ee9 L\u00e1t hoa \u0111\u1ec1u t\u1eeb \u0111\u1ea3o Hainan l\u00e0 Changjiang (20 gia \u0111\u00ecnh), Jianfeng (20 gia \u0111\u00ecnh), Sanya (20 gia \u0111\u00ecnh), Luio (20 gia \u0111\u00ecnh) v\u00e0 Limu (20 gia \u0111\u00ecnh).<\/p>\n

2.1.3. H\u1ea1t gi\u1ed1ng c\u00e2y M\u1ee1 H\u1ea3i Nam (Manglietia hainanensis<\/i>):Trung Qu\u1ed1c \u0111\u00e3 thu v\u00e0 b\u00e0n giao cho Vi\u1ec7t Nam 5 xu\u1ea5t x\u1ee9 M\u1ee1 H\u1ea3i Nam l\u00e0 Tian Lake Jianfeng, Southern Jianfeng, Diao Luio, Limu v\u00e0 Changjiang \u0111\u1ec1u t\u1eeb \u0111\u1ea3o H\u1ea3i Nam.<\/p>\n

2.1.4. H\u1ea1t gi\u1ed1ng c\u00e2y Gi\u1ed5i x\u01b0\u01a1ng (Michelia bailloniii<\/i>):Trung Qu\u1ed1c \u0111\u00e3 thu v\u00e0 b\u00e0n giao cho Vi\u1ec7t Nam 5 xu\u1ea5t x\u1ee9 Gi\u1ed5i x\u01b0\u01a1ng thu\u1ed9c t\u1ec9nh V\u00e2n Nam l\u00e0 Puwen, Jinghong, Jiangcheng, Menghai v\u00e0 Mengla.<\/p>\n

3<\/b>.<\/b> K\u1ebft qu\u1ea3 gieo \u01b0\u01a1m 3 lo\u00e0i c\u00e2y (C\u00e1ng l\u00f2, Gi\u1ed5i x\u01b0\u01a1ng v\u00e0 M\u1ee1 H\u1ea3i Nam)<\/b><\/p>\n

3<\/b>.<\/b>1<\/b>.<\/b> Gieo \u01b0\u01a1m c\u00e2y C\u00e1ng l\u00f2<\/b><\/p>\n

3.1.1. K\u1ebft qu\u1ea3 gieo \u01b0\u01a1m v\u00e0 t\u1ea1o c\u00e2y con C\u00e1ng l\u00f2: S\u1ed1 h\u1ea1t gi\u1ed1ng thu \u0111\u01b0\u1ee3c t\u1eeb 3 xu\u1ea5t x\u1ee9 c\u1ee7a Vi\u1ec7t Nam v\u00e0 5 xu\u1ea5t x\u1ee9 nh\u1eadn t\u1eeb Trung Qu\u1ed1c Xu\u1ea5t x\u1ee9 Tengchong t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 7%,; xu\u1ea5t x\u1ee9 Mengla t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 6%; xu\u1ea5t x\u1ee9 Lingyun t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 60%; xu\u1ea5t x\u1ee9 Ceheng t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 65%; xu\u1ea5t x\u1ee9 Menghai t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 75%; xu\u1ea5t x\u1ee9 C\u00f2 M\u1ea1 t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 52%; xu\u1ea5t x\u1ee9 Chi\u1ec1ng B\u00f4m t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 55%; xu\u1ea5t x\u1ee9 Y\u00ean Minh t\u1ef7 l\u1ec7\u00a0 n\u1ea3y m\u1ea7m 9%,<\/p>\n

3.1.2. K\u1ef9 thu\u1eadt gieo \u01b0\u01a1m c\u00e2y C\u00e1ng l\u00f2: X\u1eed l\u00fd h\u1ea1t gi\u1ed1ng, k\u1ef9 thu\u1eadt gieo \u01b0\u01a1m, ch\u0103m s\u00f3c c\u00e2y con<\/p>\n

3<\/b>.<\/b>2<\/b>.<\/b> Gieo \u01b0\u01a1m c\u00e2y Gi\u1ed5i x\u01b0\u01a1ng<\/b><\/p>\n

3.2.1. K\u1ebft qu\u1ea3 gieo \u01b0\u01a1m v\u00e0 t\u1ea1o c\u00e2y con c\u00e2y Gi\u1ed5i x\u01b0\u01a1ng: S\u1ed1 h\u1ea1t gi\u1ed1ng nh\u1eadn \u0111\u01b0\u1ee3c t\u1eeb Trung Qu\u1ed1c: Xu\u1ea5t x\u1ee9 Jiangcheng t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 95%; xu\u1ea5t x\u1ee9 Jinghong t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 91%; xu\u1ea5t x\u1ee9 Puwen t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 89%; xu\u1ea5t x\u1ee9 Menghai t\u1ef7 l\u1ec7 n\u1ea9y m\u1ea7m \u0111\u1ea1t 70%; xu\u1ea5t x\u1ee9 Mengla t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 10%.<\/p>\n

3.2.2. K\u1ef9 thu\u1eadt gieo \u01b0\u01a1m c\u00e2y Gi\u1ed5i x\u01b0\u01a1ng: X\u1eed l\u00fd h\u1ea1t gi\u1ed1ng, k\u1ef9 thu\u1eadt gieo \u01b0\u01a1m, ch\u0103m s\u00f3c c\u00e2y con<\/p>\n

3.3<\/b>.<\/b> Gieo \u01b0\u01a1m c\u00e2y M\u1ee1 H\u1ea3i Nam<\/b><\/p>\n

3.3.1. K\u1ebft qu\u1ea3 gieo \u01b0\u01a1m v\u00e0 t\u1ea1o c\u00e2y con c\u00e2y M\u1ee1 H\u1ea3i Nam: S\u1ed1 h\u1ea1t gi\u1ed1ng M\u1ee1 H\u1ea3i Nam thu t\u1eeb VQG Ba V\u00ec, H\u00e0 N\u1ed9i : Xu\u1ea5t x\u1ee9 Southern Jianfeng t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 82%; xu\u1ea5t x\u1ee9 Tianlake Jianfeng t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 75%; xu\u1ea5t x\u1ee9 Diao Luio t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 46%; xu\u1ea5t x\u1ee9 Limu t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 35%; xu\u1ea5t x\u1ee9 Changjiang t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 20%; xu\u1ea5t x\u1ee9 Ba V\u00ec t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 83%.<\/p>\n

3.3.2. K\u1ef9 thu\u1eadt gieo \u01b0\u01a1m c\u00e2y M\u1ee1 H\u1ea3i Nam<\/p>\n

– X\u1eed l\u00fd h\u1ea1t gi\u1ed1ng, k\u1ef9 thu\u1eadt gieo \u01b0\u01a1m, ch\u0103m s\u00f3c c\u00e2y con<\/p>\n

4<\/b>.<\/b> Tr\u1ed3ng kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9, h\u1eadu th\u1ebf v\u00e0 khu b\u1ea3o t\u1ed3n gen 3 lo\u00e0i c\u00e2y (M\u1ee1 H\u1ea3i Nam, \u00a0C\u00e1ng l\u00f2 v\u00e0 Gi\u1ed5i x\u01b0\u01a1ng)<\/b><\/p>\n

4.1. C\u00e1c khu kh\u1ea3o nghi\u1ec7m, b\u1ea3o t\u1ed3n ngu\u1ed3n gen c\u00e2y C\u00e1ng l\u00f2<\/b><\/p>\n

4.1.1. Kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9<\/p>\n

Di\u1ec7n t\u00edch 0,7 ha m\u00f4 h\u00ecnh \u0111\u01b0\u1ee3c tr\u1ed3ng t\u1ea1i Tr\u1ea1m L\u00e2m sinh Chi\u1ec1ng B\u00f4m (S\u01a1n La)<\/p>\n

4.1.2. Kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf lo\u00e0i C\u00e1ng l\u00f2<\/p>\n

Di\u1ec7n t\u00edch 0,8 ha m\u00f4 h\u00ecnh \u0111\u01b0\u1ee3c tr\u1ed3ng t\u1ea1i Tr\u1ea1m L\u00e2m sinh Chi\u1ec1ng B\u00f4m (S\u01a1n La)<\/p>\n

4.1.3. X\u00e2y d\u1ef1ng khu b\u1ea3o t\u1ed3n gen lo\u00e0i C\u00e1ng l\u00f2<\/p>\n

Di\u1ec7n t\u00edch 1,5 ha t\u1ea1i Trung t\u00e2m Khoa h\u1ecdc S\u1ea3n xu\u1ea5t L\u00e2m nghi\u1ec7p v\u00f9ng T\u00e2y<\/p>\n

4.2. C\u00e1c khu kh\u1ea3o nghi\u1ec7m, b\u1ea3o t\u1ed3n ngu\u1ed3n gen c\u00e2y Gi\u1ed5i x\u01b0\u01a1ng<\/b><\/p>\n

4.2.1. Kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9<\/p>\n

Di\u1ec7n t\u00edch 1 ha m\u00f4 h\u00ecnh \u0111\u01b0\u1ee3c tr\u1ed3ng t\u1ea1i Tr\u1ea1m Th\u1ef1c nghi\u1ec7m L\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7 Ho\u00e0nh B\u1ed3<\/p>\n

4.2.2. X\u00e2y d\u1ef1ng khu b\u1ea3o t\u1ed3n gen lo\u00e0i Gi\u1ed5i x\u01b0\u01a1ng<\/p>\n

Di\u1ec7n t\u00edch 2,5ha t\u1ea1i Ho\u00e0nh B\u1ed3, Qu\u1ea3ng Ninh.<\/p>\n

4.3. C\u00e1c khu kh\u1ea3o nghi\u1ec7m, b\u1ea3o t\u1ed3n ngu\u1ed3n gen c\u00e2y M\u1ee1 H\u1ea3i Nam<\/b><\/p>\n

4.1.1. Kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9<\/p>\n

T\u1ed5ng s\u1ed1 c\u00f3 3 xu\u1ea5t x\u1ee9 c\u00f3 \u0111\u1ee7 c\u00e2y con \u0111\u01b0a v\u00e0o kh\u1ea3o nghi\u1ec7m l\u00e0 2 xu\u1ea5t x\u1ee9 c\u1ee7a Trung Qu\u1ed1c v\u00e0 1 xu\u1ea5t x\u1ee9 c\u1ee7a Vi\u1ec7t Nam.<\/p>\n

4.1.2. Kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf lo\u00e0i M\u1ee1 H\u1ea3i Nam<\/p>\n

Di\u1ec7n t\u00edch 0,7ha m\u00f4 h\u00ecnh \u0111\u01b0\u1ee3c tr\u1ed3ng t\u1ea1i Tr\u1ea1m Th\u1ef1c nghi\u1ec7m L\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7 Ho\u00e0nh B\u1ed3<\/p>\n

5. Ph\u00e2n t\u00edch \u0111a d\u1ea1ng di truy\u1ec1n c\u1ee7a 3 lo\u00e0i c\u00e2y (M\u1ee1 H\u1ea3i Nam, C\u00e1ng l\u00f2 v\u00e0 Gi\u1ed5i x\u01b0\u01a1ng)<\/b><\/p>\n

5.1. Ph\u00e2n t\u00edch \u0111a d\u1ea1ng di truy\u1ec1n c\u00e2y M\u1ee1 H\u1ea3i Nam<\/b><\/p>\n

Ph\u00e2n t\u00edch t\u00ednh \u0111a h\u00ecnh ADN b\u1eb1ng k\u1ef9 thu\u1eadt RAPD. Trong t\u1ea5t c\u1ea3 5 m\u1ed3i ng\u1eabu nhi\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n t\u00edch t\u00ednh \u0111a h\u00ecnh ADN c\u1ee7a 50 m\u1eabu M\u1ee1 H\u1ea3i Nam ch\u1ec9 c\u00f3 3 m\u1ed3i nh\u00e2n \u0111\u01b0\u1ee3c c\u00e1c b\u0103ng \u0111a h\u00ecnh.<\/p>\n

5.2. Ph\u00e2n t\u00edch \u0111a d\u1ea1ng di truy\u1ec1n c\u00e2y C\u00e1ng l\u00f2<\/b><\/p>\n

5.2.1. Ph\u00e2n t\u00edch \u0111a h\u00ecnh ADN b\u1eb1ng k\u1ef9 thu\u1eadt RAPD<\/p>\n

S\u1ea3n ph\u1ea9m RAPD v\u1edbi c\u00e1c m\u1ed3i kh\u00e1c nhau \u0111\u01b0\u1ee3c \u0111i\u1ec7n di tr\u00ean gel agaroza 1,8% \u0111\u1ec3 ph\u00e2n t\u00edch t\u00ednh \u0111a h\u00ecnh ADN c\u1ee7a 130 m\u1eabu c\u00e2y C\u00e1ng l\u00f2.<\/p>\n

5.3. Ph\u00e2n t\u00edch \u0111a d\u1ea1ng di truy\u1ec1n c\u00e2y Gi\u1ed5i x\u01b0\u01a1ng<\/b><\/p>\n

5.3.1. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch v\u1edbi c\u00e1c m\u1ed3i RAPD<\/p>\n

S\u1ea3n ph\u1ea9m PCR v\u1edbi c\u00e1c m\u1ed3i RAPD \u0111\u01b0\u1ee3c \u0111i\u1ec7n di tr\u00ean gel agarose 1%. K\u00fd hi\u1ec7u c\u1ee7a c\u00e1c m\u1eabu l\u00e0 I: xu\u1ea5t x\u1ee9 Puwen, II: xu\u1ea5t x\u1ee9 Jiangcheng, III: xu\u1ea5t x\u1ee9 Menghai, IV: xu\u1ea5t x\u1ee9 Jinghong, DL: \u0110\u00e0 L\u1ea1t v\u00e0 PT: Ph\u00fa Th\u1ecd.<\/p>\n

5.3.2. Quan h\u1ec7 di truy\u1ec1n gi\u1eefa c\u00e1c d\u00f2ng Gi\u1ed5i<\/p>\n

Quan h\u1ec7 di truy\u1ec1n gi\u1eefa c\u00e1c m\u1eabu Gi\u1ed5i \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n qua c\u00e2y ph\u00e2n lo\u1ea1i.<\/p>\n

5.3.3. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch c\u00e1c m\u1ed3i l\u1ee5c l\u1ea1p v\u1edbi enzym gi\u1edbi h\u1ea1n<\/p>\n

K\u1ebft qu\u1ea3 \u0111i\u1ec7n di s\u1ea3n ph\u1ea9m PCR v\u1edbi c\u1eb7p m\u1ed3i l\u1ee5c l\u1ea1p trn<\/i>S-trn<\/i>M c\u1ee7a c\u00e1c m\u1eabu Gi\u1ed5i cho th\u1ea5y v\u1ec1 k\u00edch th\u01b0\u1edbc c\u1ee7a s\u1ea3n ph\u1ea9m\u00a0 nh\u1eadn \u0111\u01b0\u1ee3c ph\u00e2n \u0111o\u1ea1n \u0111\u1eb7c tr\u01b0ng v\u00e0 kh\u00f4ng c\u00f3 \u0111a h\u00ecnh.<\/p>\n

6. Tham quan h\u1ecdc t\u1eadp t\u1ea1i Trung Qu\u1ed1c<\/p>\n

– N\u0103m 2006: Ph\u00eda Vi\u1ec7t Nam c\u00f3 3 ng\u01b0\u1eddi \u0111i, 5 ng\u00e0y\/ ng\u01b0\u1eddi; Ti\u1ebfp \u0111\u00f3n \u0111o\u00e0n chuy\u00ean gia ph\u00eda Trung Qu\u1ed1c sang Vi\u1ec7t Nam, c\u00f3 7 ng\u01b0\u1eddi \u0111i.<\/p>\n

– N\u0103m 2007:\u00a0 Ph\u00eda Vi\u1ec7t Nam c\u00f3 4 ng\u01b0\u1eddi \u0111i, trong \u0111\u00f3 c\u00f3 3 ng\u01b0\u1eddi \u0111i 11 ng\u00e0y v\u00e0 1 ng\u01b0\u1eddi 19 ng\u00e0y; Ti\u1ebfp \u0111\u00f3n \u0111o\u00e0n chuy\u00ean gia ph\u00eda Trung Qu\u1ed1c sang Vi\u1ec7t Nam, c\u00f3 9 ng\u01b0\u1eddi \u0111i, 9 ng\u00e0y\/ ng\u01b0\u1eddi<\/p>\n

– N\u0103m 2008: T\u1ed5 ch\u1ee9c th\u00e0nh c\u00f4ng h\u1ed9i th\u1ea3o k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u1ee7a nhi\u1ec7m v\u1ee5 ngh\u1ecb \u0111\u1ecbnh th\u01b0 t\u1ea1i Vi\u1ec7n KHLN Vi\u1ec7t Nam.<\/p>\n

 <\/p>\n

 <\/p>\n

K\u1ebeT LU\u1eacN<\/p>\n

1. \u0110\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc v\u00e0 sinh th\u00e1i c\u1ee7a c\u00e2y C\u00e1ng l\u00f2, Gi\u1ed5i x\u01b0\u01a1ng v\u00e0 M\u1ee1<\/b>.<\/p>\n

C\u00e2y C\u00e1ng l\u00f2 (Butula alnoides<\/i> Buch-Ham), C\u00e2y M\u1ee1 (Manglietia conifera<\/i> Dandy), M\u1ee1 H\u1ea3i Nam (Manglietia hainanensis<\/i> Dandy).<\/p>\n

2. K\u1ebft qu\u1ea3 v\u1ec1 thu h\u00e1i v\u00e0 trao \u0111\u1ed5i h\u1ea1t gi\u1ed1ng<\/b><\/p>\n

Vi\u1ec7t Nam \u0111\u00e3 thu h\u1ea1t gi\u1ed1ng c\u00e2y C\u00e1ng l\u00f2 t\u1eeb 3 xu\u1ea5t.Trung Qu\u1ed1c \u0111\u00e3 thu h\u1ea1t gi\u1ed1ng c\u00e2y C\u00e1ng l\u00f2 t\u1eeb 5 xu\u1ea5t x\u1ee9.<\/p>\n

Vi\u1ec7t Nam \u0111\u00e3 thu h\u1ea1t gi\u1ed1ng 5 xu\u1ea5t x\u1ee9 c\u00e2y L\u00e1t hoa. Trung qu\u1ed1c \u0111\u00e3 thu v\u00e0 b\u00e0n giao cho Vi\u1ec7t Nam 5 xu\u1ea5t x\u1ee9 L\u00e1t hoa.<\/p>\n

Vi\u1ec7t Nam \u0111\u00e3 thu v\u00e0 b\u00e0n giao h\u1ea1t gi\u1ed1ng 5 xu\u1ea5t x\u1ee9 M\u1ee1 .<\/p>\n

Vi\u1ec7t Nam \u0111\u00e3 thu h\u1ea1t gi\u1ed1ng 1 xu\u1ea5t x\u1ee9 M\u1ee1 H\u1ea3i Nam. Trung Qu\u1ed1c \u0111\u00e3 thu v\u00e0 b\u00e0n giao cho Vi\u1ec7t Nam 5 xu\u1ea5t x\u1ee9<\/p>\n

Trung Qu\u1ed1c \u0111\u00e3 thu v\u00e0 b\u00e0n giao cho Vi\u1ec7t Nam 5 xu\u1ea5t x\u1ee9 Gi\u1ed5i x\u01b0\u01a1ng.<\/p>\n

3. Gieo \u01b0\u01a1m v\u00e0 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y con t\u1eeb h\u1ea1t gi\u1ed1ng thu h\u00e1i t\u1eeb Vi\u1ec7t Nam v\u00e0 nh\u1eadn \u0111\u01b0\u1ee3c t\u1eeb Trung Qu\u1ed1c<\/b><\/b><\/p>\n

V\u1edbi c\u00f9ng c\u00f4ng th\u1ee9c x\u1eed l\u00fd, t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t gi\u1ed1ng C\u00e1ng l\u00f2 thu h\u00e1i \u1edf Vi\u1ec7t Nam v\u00e0 nh\u1eadn \u0111\u01b0\u1ee3c c\u1ee7a Trung Qu\u1ed1c r\u1ea5t kh\u00e1c nhau gi\u1eefa c\u00e1c xu\u1ea5t x\u1ee9 v\u00e0 gia \u0111\u00ecnh.<\/p>\n

T\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t gi\u1ed1ng Gi\u1ed5i x\u01b0\u01a1ng nh\u1eadn \u0111\u01b0\u1ee3c c\u1ee7a Trung Qu\u1ed1c r\u1ea5t kh\u00e1c nhau gi\u1eefa c\u00e1c xu\u1ea5t x\u1ee9. T\u1ef7 l\u1ec7 n\u1ea9y m\u1ea7m cao nh\u1ea5t \u0111\u1ea1t 95% v\u00e0 th\u1ea5p nh\u1ea5t ch\u1ec9 \u0111\u1ea1t 10%. Sinh tr\u01b0\u1edfng chi\u1ec1u cao c\u1ee7a c\u00e2y con Gi\u1ed5i x\u01b0\u01a1ng t\u1ed1t nh\u1ea5t l\u00e0 Puwen v\u1edbi chi\u1ec1u cao trung b\u00ecnh l\u00e0 47cm, \u0111\u01b0\u1eddng k\u00ednh c\u1ed5 r\u1ec5 5,4 mm sau 12 th\u00e1ng tu\u1ed5i.<\/p>\n

T\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t gi\u1ed1ng M\u1ee1 H\u1ea3i Nam thu h\u00e1i \u1edf Vi\u1ec7t Nam v\u00e0 nh\u1eadn \u0111\u01b0\u1ee3c c\u1ee7a Trung Qu\u1ed1c r\u1ea5t kh\u00e1c nhau gi\u1eefa c\u00e1c xu\u1ea5t x\u1ee9 v\u00e0 gia \u0111\u00ecnh.<\/p>\n

4. Kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9, h\u1eadu th\u1ebf v\u00e0 x\u00e2y d\u1ef1ng khu b\u1ea3o t\u1ed3n ngu\u1ed3n gen c\u00e1c lo\u00e0i C\u00e1ng l\u00f2, Gi\u1ed5i x\u01b0\u01a1ng v\u00e0 M\u1ee1 H\u1ea3i Nam.<\/b><\/p>\n

Sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c xu\u1ea5t x\u1ee9 C\u00e1ng l\u00f2 tr\u1ed3ng t\u1ea1i Chi\u1ec1ng B\u00f4m (S\u01a1n La) l\u00e0 kh\u00e1c nhau. Xu\u1ea5t x\u1ee9 Menghai \u0111\u1ea1t chi\u1ec1u cao cao nh\u1ea5t, trung b\u00ecnh \u0111\u1ea1t 39,1 cm, \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c trung b\u00ecnh 4,2 mm<\/p>\n

Sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c xu\u1ea5t x\u1ee9 Gi\u1ed5i x\u01b0\u01a1ng tr\u1ed3ng t\u1ea1i Ho\u00e0nh B\u1ed3 (Qu\u1ea3ng Ninh) l\u00e0 kh\u00e1c nhau.<\/p>\n

Sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c xu\u1ea5t x\u1ee9 M\u1ee1 H\u1ea3i Nam tr\u1ed3ng t\u1ea1i Ho\u00e0nh B\u1ed3 (Qu\u1ea3ng Ninh) c\u0169ng kh\u00e1c nhau.<\/p>\n

5. Ph\u00e2n t\u00edch \u0111a d\u1ea1ng di truy\u1ec1n lo\u00e0i C\u00e1ng l\u00f2, M\u1ee1 H\u1ea3i Nam v\u00e0 Gi\u1ed5i x\u01b0\u01a1ng<\/b>.<\/p>\n

5.1. \u0110\u1ed1i v\u1edbi C\u00e1ng l\u00f2: Qua ph\u00e2n t\u00edch ch\u1ec9 th\u1ecb RAPD c\u1ee7a 130 m\u1eabu v\u00e0 s\u00e2u h\u01a1n cho 45 m\u1eabu cho th\u1ea5y, c\u00e1c gia \u0111\u00ecnh C\u00e1ng l\u00f2 c\u00f3 xu\u1ea5t x\u1ee9 kh\u00e1c nhau c\u00f3 m\u1ed1i quan h\u1ec7 di truy\u1ec1n kh\u00e1c bi\u1ec7t.<\/p>\n

5.2. \u0110\u1ed1i v\u1edbi M\u1ee1 H\u1ea3i Nam: K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch cho th\u1ea5y m\u1ee9c \u0111\u1ed9 \u0111a h\u00ecnh kh\u00f4ng cao c\u1ee7a h\u1ec7 gen nh\u00e2n nh\u1eadn \u0111\u01b0\u1ee3c nh\u1edd ch\u1ec9 th\u1ecb RAPD v\u00e0 m\u1ed1i t\u01b0\u01a1ng \u0111\u1ed3ng di truy\u1ec1n gi\u1eefa 50 m\u1eabu M\u1ee1 H\u1ea3i Nam \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u (thu t\u1eeb Trung Qu\u1ed1c v\u00e0 Vi\u1ec7t Nam) l\u00e0 kho\u1ea3ng t\u1eeb 82% \u0111\u1ebfn 95%.<\/p>\n

5.3. \u0110\u1ed1i v\u1edbi Gi\u1ed5i x\u01b0\u01a1ng: C\u00e1c m\u1eabu Gi\u1ed5i nghi\u00ean c\u1ee9u c\u00f3 m\u1ee9c \u0111\u1ed9 \u0111a d\u1ea1ng di truy\u1ec1n gen nh\u00e2n cao c\u00f3 th\u1ec3 l\u00e0 do t\u00e1c \u0111\u1ed9ng c\u1ee7a \u0111i\u1ec1u ki\u1ec7n sinh th\u00e1i l\u00ean c\u00e1c t\u00ednh tr\u1ea1ng th\u00edch nghi c\u1ee7a t\u1eebng v\u00f9ng c\u1ee5 th\u1ec3 trong m\u1ed9t lo\u00e0i (Gi\u1ed5i x\u01b0\u01a1ng)<\/p>\n

T\u00c0I LI\u1ec6U THAM KH\u1ea2O<\/p>\n

    \n
  1. Ho\u00e0ng Thanh L\u1ed9c, 1993. G\u00f3p ph\u1ea7n nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m bi\u1ebfn d\u1ecb, kh\u1ea3 n\u0103ng di truy\u1ec1n m\u1ed9t s\u1ed1 ch\u1ec9 ti\u00eau ch\u1ee7 y\u1ebfu l\u00e0m c\u01a1 s\u1edf cho ch\u1ecdn gi\u1ed1ng c\u00e2y M\u1ee1. Lu\u1eadn \u00e1n Ph\u00f3 ti\u1ebfn s\u1ef9 khoa h\u1ecdc N\u00f4ng nghi\u1ec7p, H\u00e0 N\u1ed9i, 1993.<\/li>\n
  2. L\u00ea \u0110\u00ecnh Kh\u1ea3, Ho\u00e0ng Thanh L\u1ed9c, Ph\u1ea1m V\u0103n Tu\u1ea5n, 1995. Ch\u1ecdn l\u1ecdc c\u00e1c c\u00e2y M\u1ee1 m\u1ecdc nhanh c\u00f3 h\u00ecnh d\u1ea1ng t\u1ed1t cho v\u00f9ng trung t\u00e2m. TTNC Gi\u1ed1ng c\u00e2y r\u1eebng: K\u1ebft qu\u1ea3 NCKH v\u1ec1 Ch\u1ecdn gi\u1ed1ng c\u00e2y r\u1eebng (t\u1eadp 1), Nh\u00e0 XB N\u00f4ng nghi\u1ec7p, H\u00e0 N\u1ed9i, 79-139.<\/li>\n
  3. Nguy\u1ec5n B\u00e1 Ch\u1ea5t, 1995. Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc v\u00e0 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng, nu\u00f4i d\u01b0\u1ee1ng c\u00e2y L\u00e1t hoa (Chukrasia tabularis<\/i>), Lu\u1eadn \u00e1n PTS, H\u00e0 N\u1ed9i, 1995.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

    Ch\u1ee7 nhi\u1ec7m: PGS.TS. Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a \u0110\u1eb6T V\u1ea6N \u0110\u1ec0 B\u1ea3o v\u1ec7 v\u00e0 ph\u00e1t tri\u1ec3n r\u1eebng b\u1ec1n v\u1eefng l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 quan tr\u1ecdng \u1edf h\u1ea7u h\u1ebft c\u00e1c qu\u1ed1c gia tr\u00ean th\u1ebf gi\u1edbi. Vi\u1ec7c s\u1eed d\u1ee5ng h\u1ee3p l\u00fd ngu\u1ed3n t\u00e0i nguy\u00ean thi\u00ean nhi\u00ean lu\u00f4n \u0111i k\u00e8m v\u1edbi vi\u1ec7c b\u1ea3o v\u1ec7 v\u00e0 ph\u00e1t tri\u1ec3n ch\u00fang. \u1ede Vi\u1ec7t […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[13,72],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14118"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=14118"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14118\/revisions"}],"predecessor-version":[{"id":14122,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14118\/revisions\/14122"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=14118"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=14118"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=14118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}