![\"15-04-26](\"http:\/\/vafs.gov.vn\/vn\/wp-content\/uploads\/sites\/2\/2015\/04\/15-04-26-Cay-chu-luc.jpg\")
<\/a><\/p>\nPh\u01b0\u01a1ng ph\u00e1p ch\u1ecdn l\u1ecdc theo n\u0103ng su\u1ea5t b\u1ed9t gi\u1ea5y k\u1ebft h\u1ee3p gi\u1eefa sinh tr\u01b0\u1edfng, t\u1ef7 tr\u1ecdng g\u1ed7 v\u00e0 hi\u1ec7u su\u1ea5t b\u1ed9t gi\u1ea5y c\u00f3 th\u1ec3 gi\u00fap t\u0103ng n\u0103ng su\u1ea5t b\u1ed9t gi\u1ea5y \u1edf r\u1eebng tr\u1ed3ng B\u1ea1ch \u0111\u00e0n uro l\u00ean 42%. Th\u00f4ng qua c\u00e1c nghi\u00ean c\u1ee9u, \u0111\u1ec1 t\u00e0i \u0111\u00e3 ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c 30 c\u00e2y tr\u1ed9i c\u00f3 n\u0103ng su\u1ea5t b\u1ed9t gi\u1ea5y cao (110 \u2013 260 kg\/c\u00e2y), v\u01b0\u1ee3t h\u01a1n so v\u1edbi trung b\u00ecnh v\u01b0\u1eddn gi\u1ed1ng t\u1eeb 65 \u0111\u1ebfn 370%.<\/p>\n
2. \u0110\u1ed1i v\u1edbi B\u1ea1ch \u0111\u00e0n pellita:<\/b><\/p>\n
C\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng v\u00e0 ch\u1ec9 s\u1ed1 pilodyn c\u00f3 s\u1ef1 sai kh\u00e1c r\u1ea5t r\u00f5 r\u1ec7t v\u00e0 kh\u00e1c nhau c\u01a1 b\u1ea3n gi\u1eefa c\u00e1c xu\u1ea5t x\u1ee9 v\u00e0 gia \u0111\u00ecnh B\u1ea1ch \u0111\u00e0n pellita trong c\u1ea3 hai v\u01b0\u1eddn gi\u1ed1ng t\u1ea1i B\u1ea7u B\u00e0ng v\u00e0 Playku. H\u1ec7 s\u1ed1 di truy\u1ec1n c\u1ee7a c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng \u1edf B\u1ea1ch \u0111\u00e0n pellita dao \u0111\u1ed9ng t\u1eeb 0,17 \u0111\u1ebfn 0,35 trong khi h\u1ec7 s\u1ed1 di truy\u1ec1n c\u1ee7a pilodyn l\u00e0 t\u1eeb 0,38 \u0111\u1ebfn 0,42. T\u01b0\u01a1ng quan di truy\u1ec1n gi\u1eefa hai l\u1eadp \u0111\u1ecba B\u1ea7u B\u00e0ng v\u00e0 Playku v\u1ec1 sinh tr\u01b0\u1edfng l\u00e0 0,42 v\u00e0 v\u1ec1 pilodyn l\u00e0 0,73. Ch\u1ee9ng t\u1ecf t\u00ednh tr\u1ea1ng sinh tr\u01b0\u1edfng ch\u1ecbu \u1ea3nh h\u01b0\u1edfng m\u1ea1nh c\u1ee7a t\u01b0\u01a1ng t\u00e1c di truy\u1ec1n ho\u00e0n c\u1ea3nh trong khi t\u1ef7 tr\u1ecdng g\u1ed7 \u00edt ch\u1ecbu \u1ea3nh h\u01b0\u1edfng c\u1ee7a t\u01b0\u01a1ng t\u00e1c n\u00e0y.<\/p>\n
3. \u0110\u1ed1i v\u1edbi gi\u1ed1ng lai gi\u1eefa B\u1ea1ch \u0111\u00e0n uro v\u00e0 B\u1ea1ch \u0111\u00e0n pellita<\/b><\/p>\n
K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c t\u1ed5 h\u1ee3p lai tr\u00ean c\u00e1c l\u1eadp \u0111\u1ecba cho th\u1ea5y m\u1ed9t t\u1ed5 h\u1ee3p sinh tr\u01b0\u1edfng t\u1ed1t t\u1ea1i l\u1eadp \u0111\u1ecba n\u00e0y c\u00f3 th\u1ec3 s\u1ebd kh\u00f4ng sinh tr\u01b0\u1edfng t\u1ed1t t\u1ea1i l\u1eadp \u0111\u1ecba kh\u00e1c v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Lai gi\u1ed1ng v\u00e0 ch\u1ecdn l\u1ecdc c\u00e1 th\u1ec3 trong c\u00e1c t\u1ed5 h\u1ee3p lai \u0111\u1ec3 ph\u00e1t tri\u1ec3n v\u00e0o s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 g\u00f3p ph\u1ea7n n\u00e2ng cao n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng. K\u1ebft qu\u1ea3 ch\u1ecdn l\u1ecdc c\u00e2y tr\u1ed9i trong c\u00e1c t\u1ed5 h\u1ee3p lai \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c nhi\u1ec1u c\u00e2y tr\u1ed9i c\u00f3 \u0111\u1ed9 v\u01b0\u1ee3t v\u1ec1 th\u1ec3 t\u00edch so v\u1edbi c\u00e1c t\u1ed5 h\u1ee3p t\u1ed1t nh\u1ea5t t\u1eeb 100% \u0111\u1ebfn 350% v\u00e0 t\u1eeb 185% \u0111\u1ebfn 530% so v\u1edbi c\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng t\u1ed1t nh\u1ea5t l\u00e0 gi\u1ed1ng U6 v\u00e0 PN14.<\/p>\n
4. \u0110\u1ed1i v\u1edbi c\u00e1c d\u00f2ng v\u00f4 t\u00ednh B\u1ea1ch \u0111\u00e0n camal<\/b><\/p>\n
K\u1ebft qu\u1ea3 tr\u00ean cho th\u1ea5y B\u1ea1ch \u0111\u00e0n camal r\u1ea5t th\u00edch h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n \u0111\u1ea5t c\u00e1t, c\u00f3 l\u01b0\u1ee3ng m\u01b0a t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p v\u00e0 m\u00f9a kh\u00f4 k\u00e9o d\u00e0i nh\u01b0 \u1edf v\u00f9ng B\u00ecnh Thu\u1eadn Th\u00f4ng qua c\u00e1c th\u00ed nghi\u1ec7m ch\u1ee9ng minh d\u00f2ng, \u0111\u00e3 ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c 5 d\u00f2ng t\u1ed1t nh\u1ea5t bao g\u1ed3m 159, 55, 9, 39 v\u00e0 BV22 c\u00f3 l\u01b0\u1ee3ng t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n n\u0103m \u0111\u1ea1t \u0111\u1ebfn 44,3 m3\/ha\/n\u0103m, v\u01b0\u1ee3t 3 l\u1ea7n gi\u1ed1ng \u0111\u1ed1i ch\u1ee9ng.<\/p>\n
5. \u0110\u1ed1i v\u1edbi d\u00f2ng v\u00f4 t\u00ednh B\u1ea1ch \u0111\u00e0n uro v\u00e0 B\u1ea1ch \u0111\u00e0n lai UP<\/b><\/p>\n
C\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t v\u1ec1 sinh tr\u01b0\u1edfng gi\u1eefa c\u00e1c d\u00f2ng v\u00f4 t\u00ednh B\u1ea1ch \u0111\u00e0n uro c\u0169ng nh\u01b0\u00a0 B\u1ea1ch \u0111\u00e0n lai UP trong t\u1ea5t c\u1ea3 c\u00e1c kh\u1ea3o nghi\u1ec7m. K\u1ebft qu\u1ea3 \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c nhi\u1ec1u d\u00f2ng B\u1ea1ch \u0111\u00e0n uro v\u00e0 UP c\u00f3 sinh tr\u01b0\u1edfng t\u1ed1t, v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi c\u00e1c gi\u1ed1ng \u0111\u1ed1i ch\u1ee9ng l\u00e0 U6, PN14 v\u00e0 c\u00e1c gi\u1ed1ng s\u1ea3n xu\u1ea5t \u0111\u1ea1i tr\u00e0.<\/p>\n
6. \u0110\u1ed1i v\u1edbi Keo l\u00e1 tr\u00e0m<\/b><\/p>\n
H\u1ec7 s\u1ed1 di truy\u1ec1n theo ngh\u0129a h\u1eb9p c\u1ee7a c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng \u1edf Keo l\u00e1 tr\u00e0m dao \u0111\u1ed9ng t\u1eeb 0,36 \u0111\u1ebfn 0,39, th\u1ea5p h\u01a1n so v\u1edbi t\u1ef7 tr\u1ecdng g\u1ed7 (0,42 \u2013 0,61). H\u1ec7 s\u1ed1 di truy\u1ec1n theo ngh\u0129a r\u1ed9ng dao \u0111\u1ed9ng t\u1eeb 0,21 \u2013 0,56 cho c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng, t\u1eeb 0,16 \u0111\u1ebfn 0,38 cho ch\u1ec9 ti\u00eau \u0111\u1ed9 co r\u00fat g\u1ed7 v\u00e0 t\u1eeb 0,21 \u0111\u1ebfn 0,57 cho ch\u1ec9 ti\u00eau \u0111\u1ed9 b\u1ec1n u\u1ed1n t\u0129nh v\u00e0 m\u00f4 men \u0111\u1ee9t g\u00e3y. Gi\u1eefa sinh tr\u01b0\u1edfng v\u00e0 c\u00e1c ch\u1ec9 ti\u00eau t\u00ednh ch\u1ea5t g\u1ed7 t\u1ed3n t\u1ea1i t\u01b0\u01a1ng quan y\u1ebfu cho th\u1ea5y c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n sinh tr\u01b0\u1edfng \u1edf Keo l\u00e1 tr\u00e0m m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng nhi\u1ec1u \u0111\u1ebfn t\u00ednh ch\u1ea5t g\u1ed7.<\/p>\n
\u0110\u00e3 ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 d\u00f2ng \u01b0u vi\u1ec7t cho t\u1eebng v\u00f9ng sinh th\u00e1i kh\u00e1c nhau trong c\u1ea3 n\u01b0\u1edbc. \u0110\u00e3 c\u00f4ng nh\u1eadn cho 3 gi\u1ed1ng qu\u1ed1c gia v\u00e0 16 gi\u1ed1ng TBKT cho Keo l\u00e1 tr\u00e0m. N\u0103ng su\u1ea5t c\u1ee7a c\u00e1c d\u00f2ng \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn c\u00f3 th\u1ec3 \u0111\u1ea1t 15 \u0111\u1ebfn 30 m3\/ha\/n\u0103m, v\u01b0\u1ee3t 20 \u0111\u1ebfn 150% so v\u1edbi gi\u1ed1ng \u0111\u1ea1i tr\u00e0.<\/p>\n
7. \u0110\u1ed1i v\u1edbi Keo tai t\u01b0\u1ee3ng v\u00e0 Keo lai<\/b><\/p>\n
Gi\u1eefa c\u00e1c gia \u0111\u00ecnh trong v\u01b0\u1eddn gi\u1ed1ng th\u1ebf h\u1ec7 2 c\u00f3 s\u1ef1 sai kh\u00e1c r\u1ea5t r\u00f5 r\u1ec7t v\u1ec1 sinh tr\u01b0\u1edfng. Ti\u1ebfp t\u1ee5c theo d\u00f5i \u0111\u00e1nh gi\u00e1 v\u00e0 t\u1ec9a th\u01b0a di truy\u1ec1n, lo\u1ea1i b\u1ecf c\u00e1c gia \u0111\u00ecnh v\u00e0 c\u00e1c c\u00e1 th\u1ec3 c\u00f3 sinh tr\u01b0\u1edfng k\u00e9m, ch\u1ec9 \u0111\u1ec3 l\u1ea1i nh\u1eefng c\u00e1 th\u1ec3 c\u00f3 sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y t\u1ed1t nh\u1ea5t ch\u1eafc ch\u1eafn s\u1ebd t\u1ea1o \u0111\u01b0\u1ee3c t\u0103ng thu l\u1edbn trong \u0111\u1eddi sau.<\/p>\n
K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c d\u00f2ng Keo lai cho th\u1ea5y c\u00f3 s\u1ef1 sai kh\u00e1c r\u1ea5t r\u00f5 r\u1ec7t v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 t\u1ef7 tr\u1ecdng g\u1ed7 c\u1ee7a c\u00e1c d\u00f2ng Keo lai \u1edf giai \u0111o\u1ea1n 5 \u0111\u1ebfn 9 tu\u1ed5i. C\u00e1c d\u00f2ng Keo lai \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn gi\u1ed1ng qu\u1ed1c gia v\u00e0 gi\u1ed1ng ti\u1ebfn b\u1ed9 k\u1ef9 thu\u1eadt v\u1eabn duy tr\u00ec \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng v\u01b0\u1ee3t tr\u1ed9i tr\u00ean c\u00e1c kh\u1ea3o nghi\u1ec7m. K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 c\u0169ng cho th\u1ea5y c\u00f3 s\u1ef1 t\u01b0\u01a1ng t\u00e1c d\u00f2ng v\u00e0 l\u1eadp \u0111\u1ecba kh\u00e1 m\u1ea1nh v\u1ec1 sinh tr\u01b0\u1edfng.<\/p>\n
8. \u0110\u1ed1i v\u1edbi Keo l\u00e1 li\u1ec1m<\/b><\/p>\n
T\u1ea1i th\u1eddi \u0111i\u1ec3m 5 tu\u1ed5i, sinh tr\u01b0\u1edfng D1,3, chi\u1ec1u cao, th\u1ec3 t\u00edch c\u1ee7a c\u00e1c xu\u1ea5t x\u1ee9 Keo l\u00e1 li\u1ec1m \u1edf v\u01b0\u1eddn gi\u1ed1ng Cam L\u1ed9 \u0111\u00e3 c\u00f3 s\u1ef1 ph\u00e2n h\u00f3a r\u1ea5t r\u00f5 r\u1ec7t. Ng\u01b0\u1ee3c l\u1ea1i, t\u1ea1i v\u01b0\u1eddn gi\u1ed1ng Phong \u0110i\u1ec1n (4 tu\u1ed5i) s\u1ef1 sai kh\u00e1c gi\u1eefa c\u00e1c xu\u1ea5t x\u1ee9 v\u1ec1 c\u00e1c ch\u1ec9 ti\u00eau n\u00e0y l\u00e0 kh\u00f4ng \u0111\u00e1ng k\u1ec3. Ph\u01b0\u01a1ng th\u1ee9c t\u1ec9a th\u01b0a di truy\u1ec1n h\u1ee3p l\u00fd \u0111\u1ed1i v\u1edbi c\u1ea3 2 v\u01b0\u1eddn gi\u1ed1ng l\u00e0 ch\u1ecdn l\u1ecdc v\u00e0 gi\u1eef l\u1ea1i 50 gia \u0111\u00ecnh c\u00f3 gi\u00e1 tr\u1ecb ch\u1ecdn gi\u1ed1ng cao nh\u1ea5t v\u00e0 t\u0103ng thu di truy\u1ec1n l\u00fd thuy\u1ebft \u0111\u1ea1t \u0111\u01b0\u1ee3c theo ph\u01b0\u01a1ng th\u1ee9c n\u00e0y \u1edf m\u1ee9c th\u1ea5p t\u01b0\u01a1ng \u1ee9ng v\u1edbi G = 3,79 – 4,50%.<\/p>\n
9. C\u00e1c k\u1ebft qu\u1ea3 v\u1ec1 nh\u00e2n gi\u1ed1ng sinh d\u01b0\u1ee1ng b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p v\u00e0 gi\u00e2m hom<\/b><\/p>\n
\u0110\u00e3 ph\u00e1t tri\u1ec3n th\u00e0nh c\u00f4ng ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p n\u00eam m\u1ea7m non r\u1ea5t d\u1ec5 \u00e1p d\u1ee5ng cho m\u1ed9t s\u1ed1 lo\u00e0i Keo v\u00e0 B\u1ea1ch \u0111\u00e0n v\u1edbi t\u1ef7 l\u1ec7 gh\u00e9p th\u00e0nh c\u00f4ng cao h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p th\u00f4ng th\u01b0\u1eddng. Gi\u00e2m hom Keo l\u00e1 li\u1ec1m v\u00e0 B\u1ea1ch \u0111\u00e0n lai UP c\u00f3 t\u1ef7 l\u1ec7 ra r\u1ec5 t\u1eeb 60-90%.<\/p>\n
10. C\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng b\u1eb1ng nu\u00f4i c\u1ea5y m\u00f4 cho c\u00e1c gi\u1ed1ng m\u1edbi ch\u1ecdn l\u1ecdc<\/b><\/p>\n
C\u00f3 th\u1ec3 \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p vi nh\u00e2n gi\u1ed1ng th\u00f4ng qua ph\u01b0\u01a1ng th\u1ee9c t\u1ea1o c\u1ee5m ch\u1ed3i \u0111\u1ec3 nh\u00e2n nhanh h\u00e0ng lo\u1ea1t c\u00e1c gi\u1ed1ng m\u1edbi ch\u1ecdn t\u1ea1o c\u1ee7a c\u00e1c lo\u00e0i Keo l\u00e1 tr\u00e0m, B\u1ea1ch \u0111\u00e0n camal v\u00e0 B\u1ea1ch \u0111\u00e0n lai UP, c\u00e1c th\u00ed nghi\u1ec7m c\u0169ng ch\u1ec9 ra r\u1eb1ng c\u00f3 th\u1ec3 d\u00f9ng HgCl2 0,1% l\u00e0m h\u00f3a ch\u1ea5t kh\u1eed tr\u00f9ng v\u1edbi th\u1eddi gian kh\u00e1c nhau cho t\u1eebng d\u00f2ng\/gia \u0111\u00ecnh. M\u00f4i tr\u01b0\u1eddng nh\u00e2n ch\u1ed3i th\u00edch h\u1ee3p l\u00e0 m\u00f4i tr\u01b0\u1eddng MS* c\u1ed9ng v\u1edbi BAP v\u00e0 NAA v\u1edbi c\u00e1c n\u1ed3ng \u0111\u1ed9 kh\u00e1c nhau cho t\u1eebng d\u00f2ng\/gia \u0111\u00ecnh.<\/p>\n
V. K\u1ebeT LU\u1eacN V\u00c0 \u0110\u1ec0 NGH\u1eca<\/b><\/p>\n
1. K\u1ebeT LU\u1eacN<\/b><\/p>\n
Tr\u00ean c\u01a1 s\u1edf k\u1ebf th\u1eeba c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u1ee7a c\u00e1c giai \u0111o\u1ea1n tr\u01b0\u1edbc v\u00e0 th\u00f4ng qua vi\u1ec7c ph\u1ed1i h\u1ee3p, h\u1ee3p t\u00e1c nghi\u00ean c\u1ee9u v\u1edbi nhi\u1ec1u t\u1ed5 ch\u1ee9c \u1edf trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc c\u0169ng nh\u01b0 gi\u1eefa c\u00e1c l\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u kh\u00e1c nhau, v\u1ec1 c\u01a1 b\u1ea3n \u0111\u00e8 t\u00e0i \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c m\u1ee5c ti\u00eau \u0111\u1ec1 ra v\u00e0 \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 r\u1ea5t kh\u1ea3 quan, kh\u00f4ng nh\u1eefng c\u00f3 \u00fd ngh\u0129a v\u1ec1 m\u1eb7t khoa h\u1ecdc m\u00e0 c\u00f2n c\u00f3 \u0111\u00f3ng g\u00f3p nh\u1ea5t \u0111\u1ecbnh v\u00e0o vi\u1ec7c n\u00e2ng cao n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng r\u1eebng tr\u1ed3ng \u1edf n\u01b0\u1edbc ta.<\/p>\n
D\u1ef1a tr\u00ean gi\u00e1 tr\u1ecb ch\u1ecdn gi\u1ed1ng x\u00e1c \u0111\u1ecbnh b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn l\u1ecdc theo ch\u1ec9 s\u1ed1 v\u00e0 t\u01b0\u01a1ng t\u00e1c Di truy\u1ec1n-Ho\u00e0n c\u1ea3nh, c\u00e1c c\u00e1 th\u1ec3 t\u1ed1t nh\u1ea5t trong c\u00e1c gia \u0111\u00ecnh c\u00f3 sinh tr\u01b0\u1edfng nhanh v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ecdn l\u1ecdc \u1edf c\u00e1c c\u01b0\u1eddng \u0111\u1ed9 kh\u00e1c nhau tu\u1ef3 thu\u1ed9c v\u00e0o m\u1ee5c \u0111\u00edch ch\u1ecdn gi\u1ed1ng: \u0111\u1ec3 thi\u1ebft l\u00e2p kh\u1ea3o nghi\u1ec7m d\u00f2ng v\u00f4 t\u00ednh l\u00e0 kho\u1ea3ng 100 -120 c\u00e1 th\u1ec3; \u0111\u1ec3 thu h\u00e1i h\u1ea1t theo gia \u0111\u00ecnh cho v\u01b0\u1eddn gi\u1ed1ng th\u1ebf h\u1ec7 2 l\u00e0 60-80 c\u00e1 th\u1ec3; 20 c\u00e1 th\u1ec3 t\u1ed1t nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thi\u1ebft l\u1eadp qu\u1ea7n th\u1ec3 ch\u1ecdn gi\u1ed1ng h\u1ea1t nh\u00e2n v\u00e0 ch\u1ec9 kho\u1ea3ng 5-10 c\u00e1 th\u1ec3 t\u1ed1t nh\u1ea5t x\u00e2y d\u1ef1ng v\u01b0\u1eddn gi\u1ed1ng di \u0111\u1ed9ng, t\u1ea1o \u0111\u1ed9t bi\u1ebfn v\u00e0 l\u00e0m c\u00e2y b\u1ed1-m\u1eb9 trong lai gi\u1ed1ng \u0111\u1ecbnh h\u01b0\u1edbng.<\/p>\n
B\u1eb1ng c\u00e1c ph\u01b0\u01a1ng th\u1ee9c nh\u00e2n gi\u1ed1ng sinh d\u01b0\u1ee1ng kh\u00e1c nhau nh\u01b0 chi\u1ebft, gh\u00e9p, gi\u00e2m hom v\u00e0 nu\u00f4i c\u1ea5y m\u00f4 t\u1ebf b\u00e0o c\u0169ng nh\u01b0 thu h\u00e1i h\u1ea1t gi\u1ed1ng v\u00e0 h\u1ea1t ph\u1ea5n, c\u00e1c v\u1eadt li\u1ec7u gi\u1ed1ng c\u00f3 gi\u00e1 tr\u1ecb n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c d\u1eabn v\u00e0 l\u01b0u gi\u1eef trong c\u00e1c v\u01b0\u1eddn c\u00e2y \u0111\u1ea7u d\u00f2ng, kho h\u1ea1t v\u00e0 trong ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n
Tr\u00ean c\u01a1 s\u1edf c\u00e1c nghi\u00ean c\u1ee9u c\u1ea3i thi\u1ec7n gi\u1ed1ng cho t\u1eebng lo\u00e0i ri\u00eang bi\u1ec7t, \u0111\u1ec1 t\u00e0i \u0111\u00e3 c\u00f3 nh\u1eefng nghi\u00ean c\u1ee9u v\u1ec1 lai gi\u1ed1ng gi\u1eefa c\u00e1c c\u00e1 th\u1ec3 c\u00f3 gi\u00e1 tr\u1ecb ch\u1ecdn gi\u1ed1ng cao nh\u1ea5t c\u1ee7a c\u00e1c lo\u00e0i t\u1eeb \u0111\u00f3 t\u1ea1o ra gi\u1ed1ng lai c\u00f3 \u01b0u th\u1ebf lai v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 sinh tr\u01b0\u1edfng \u0111\u1ed3ng th\u1eddi c\u00f3 t\u00ednh ch\u1ea5t g\u1ed7 ph\u00f9 h\u1ee3p cho c\u00e1c m\u1ee5c ti\u00eau s\u1eed d\u1ee5ng g\u1ed7 kh\u00e1c nhau. \u0110\u00e3 t\u1ea1o ra \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 t\u1ed5 h\u1ee3p lai kh\u00e1c lo\u00e0i gi\u1eefa B\u1ea1ch \u0111\u00e0n uro v\u1edbi B\u1ea1ch \u0111\u00e0n pellita c\u00f3 \u01b0u th\u1ebf lai v\u1ec1 sinh tr\u01b0\u1edfng r\u1ea5t l\u1edbn \u0111\u1ed3ng th\u1eddi \u0111\u00e3 ch\u1ecdn l\u1ecdc \u0111\u01b0\u1ee3c nhi\u1ec1u c\u00e1 th\u1ec3 lai trong c\u00e1c t\u1ed5 h\u1ee3p lai t\u1ed1t nh\u1ea5t \u0111\u1ec3 nghi\u00ean c\u1ee9u ph\u00e1t tri\u1ec3n v\u00e0o s\u1ea3n xu\u1ea5t.<\/p>\n
V\u1ec1 \u00fd ngh\u0129a th\u1ef1c ti\u1ec5n, c\u00f3 11 d\u00f2ng v\u00f4 t\u00ednh Keo l\u00e1 tr\u00e0m v\u00e0 4 d\u00f2ng v\u00f4 t\u00ednh B\u1ea1ch \u0111\u00e0n camal \u0111\u00e3 qua tuy\u1ec3n ch\u1ecdn v\u00e0 \u0111\u00e1nh gi\u00e1 t\u1ea1i m\u1ed9t s\u1ed1 hi\u1ec7n tr\u01b0\u1eddng \u0111\u01b0\u1ee3c H\u1ed9i \u0111\u1ed3ng khoa h\u1ecdc chuy\u00ean ng\u00e0nh c\u1ee7a B\u1ed9 N\u00f4ng nghi\u1ec7p v\u00e0 Ph\u00e1t tri\u1ec3n n\u00f4ng th\u00f4n c\u00f4ng nh\u1eadn l\u00e0 gi\u1ed1ng ti\u1ebfn b\u1ed9 k\u0129 thu\u1eadt, trong \u0111\u00f3 c\u00f3 m\u1ed9t gi\u1ed1ng Keo l\u00e1 tr\u00e0m \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn l\u00e0 gi\u1ed1ng qu\u1ed1c gia.<\/p>\n
2. \u0110\u1ec0 NGH\u1eca<\/b><\/p>\n
Nghi\u00ean c\u1ee9u c\u1ea3i thi\u1ec7n gi\u1ed1ng cho lo\u00e0i c\u00e2y tr\u1ed3ng n\u00f3i chung v\u00e0 c\u00e2y r\u1eebng n\u00f3i ri\u00eang l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh th\u01b0\u1eddng xuy\u00ean, li\u00ean t\u1ee5c v\u00e0 bao g\u1ed3m nhi\u1ec1u b\u01b0\u1edbc \u0111i v\u00e0 tr\u1ea3i qua nhi\u1ec1u th\u1ebf h\u1ec7 v\u00e0 qua m\u1ed7i giai \u0111o\u1ea1n, m\u1ed7i th\u1ebf h\u1ec7, n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a r\u1eebng tr\u1ed3ng kh\u00f4ng ng\u1eebng \u0111\u01b0\u1ee3c n\u00e2ng cao. V\u00ec v\u1eady, vi\u1ec7c ti\u1ebfp t\u1ee5c \u0111\u1ea7u t\u01b0 cho nghi\u00ean c\u1ee9u v\u1ec1\u00a0 gi\u1ed1ng \u0111\u1ed1i v\u1edbi\u00a0 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 c\u00e2y tr\u1ed3ng r\u1eebng kinh t\u1ebf ch\u1ee7 y\u1ebfu l\u00e0 h\u1ebft s\u1ee9c c\u1ea7n thi\u1ebft.<\/p>\n
<\/p>\n
T\u00c0I LI\u1ec6U THAM KH\u1ea2O<\/b><\/p>\n
TI\u1ebeNG VI\u1ec6T<\/b><\/p>\n\n- H\u00e0 Huy Th\u1ecbnh, L\u00ea \u0110\u00ecnh Kh\u1ea3, Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean, Ph\u00ed H\u1ed3ng H\u1ea3i, \u0110o\u00e0n Th\u1ecb Mai, Tr\u1ea7n H\u1ed3 Quang, 2009. Nghi\u00ean c\u1ee9u ch\u1ecdn t\u1ea1o gi\u1ed1ng c\u00f3 n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng cao cho m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 y\u1ebfu giai \u0111o\u1ea1n 2001 – 2005. B\u00e1o c\u00e1o H\u1ed9i ngh\u1ecb KHCN l\u00e2m nghi\u1ec7p khu v\u1ef1c ph\u00eda B\u1eafc. Trang 34 – 40.<\/li>\n
- H\u00e0 Huy Th\u1ecbnh, Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean, Ph\u00ed H\u1ed3ng H\u1ea3i, \u0110\u1ed7 H\u1eefu S\u01a1n, 2009. Nghi\u00ean c\u1ee9u ch\u1ecdn t\u1ea1o gi\u1ed1ng c\u00f3 n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng cao cho m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 y\u1ebfu giai \u0111o\u1ea1n\u00a0 2006 – 2008. B\u00e1o c\u00e1o H\u1ed9i ngh\u1ecb KHCN l\u00e2m nghi\u1ec7p khu v\u1ef1c ph\u00eda B\u1eafc. Trang 41 – 53.<\/li>\n
- Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean, H\u00e0 Huy Th\u1ecbnh, La \u00c1nh D\u01b0\u01a1ng, \u0110\u1ed7 H\u1eefu S\u01a1n, L\u00ea Anh Tu\u1ea5n, 2009. Nghi\u00ean c\u1ee9u bi\u1ebfn d\u1ecb v\u1ec1 h\u00e0m l\u01b0\u1ee3ng xenlulose c\u1ee7a c\u00e1c gia \u0111\u00ecnh v\u00e0 xu\u1ea5t x\u1ee9 b\u1ea1ch \u0111\u00e0n ur\u00f4 (Eucaluptus urophylla) l\u00e0m c\u01a1 s\u1edf cho c\u1ea3i thi\u1ec7n gi\u1ed1ng theo hi\u1ec7u su\u1ea5t b\u1ed9t gi\u1ea5y. T\u1ea1p ch\u00ed Khoa h\u1ecdc l\u00e2m nghi\u1ec7p (Vi\u1ec7n Khoa h\u1ecdc l\u00e2m nghi\u1ec7p Vi\u1ec7t Nam),\u00a0 s\u1ed1 1\/2009, trang 860 – 864.<\/li>\n<\/ol>\n
TI\u1ebeNG ANH<\/b><\/p>\n\n- Harwood, C., Ha Huy Thinh, Tran Ho Quang, P. A. Butcher and E. R. Williams, 2005. The effect of Inbreeding on Early Growth of Acacia mangium in Vietnam. Silvae Genetica, No. 53, Heft 2, 2004, p 65 – 69.<\/li>\n
- Nguyen Duc Kien, Gunnar Jansson, Chris Harwood, Curt Almqvist, Ha Huy Thinh, 2007. Genetic variation in wood basic density and pilodyn penetration and their relationships with growth, stem straightness and branch size for eucalyptus urophylla in Northern Vietnam.<\/li>\n
- Phi Hong Hai, G. Jansson, C. Harwood, B. Hannrup, Ha Huy Thinh, 2007. Genetic variation in growth, stem straightness and branch thickness in clonal trials of Acacia auriculiformis at three contrasting sites in Vietnam. Forest Ecology and Management. Vol 255\/1 pp 156-167.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
H\u00e0 Huy Th\u1ecbnh, Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean, Ph\u00ed H\u1ed3ng H\u1ea3i, \u0110o\u00e0n Th\u1ecb Mai, Mai Trung Ki\u00ean, L\u00ea S\u01a1n v\u00e0 \u0110\u1ed7 H\u1eefu S\u01a1n \u00a0 I. \u0110\u1eb6T V\u1ea4N \u0110\u1ec0 \u00a0 Trong ch\u01b0\u01a1ng tr\u00ecnh tr\u1ed3ng m\u1edbi 5 tri\u1ec7u ha r\u1eebng \u1edf n\u01b0\u1edbc ta, c\u00f3 \u0111\u1ebfn 3 tri\u1ec7u ha l\u00e0 r\u1eebng tr\u1ed3ng s\u1ea3n xu\u1ea5t bao g\u1ed3m 1 tri\u1ec7u ha c\u00e2y […]<\/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\/14982"}],"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=14982"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14982\/revisions"}],"predecessor-version":[{"id":14984,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14982\/revisions\/14984"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=14982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=14982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=14982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}