{"id":9080,"date":"2009-04-20T08:31:54","date_gmt":"2009-04-20T01:31:54","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/04\/nhan-giong-cho-mot-so-dong-tech-co-nang-suat-cao-moi-duoc-tuyen-chon\/"},"modified":"2013-10-06T09:01:18","modified_gmt":"2013-10-06T02:01:18","slug":"nhan-giong-cho-mot-so-dong-tech-co-nang-suat-cao-moi-duoc-tuyen-chon","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/nhan-giong-cho-mot-so-dong-tech-co-nang-suat-cao-moi-duoc-tuyen-chon\/","title":{"rendered":"Nh\u00e2n gi\u1ed1ng cho m\u1ed9t s\u1ed1 d\u00f2ng T\u1ebfch c\u00f3 n\u0103ng su\u1ea5t cao m\u1edbi \u0111\u01b0\u1ee3c tuy\u1ec3n ch\u1ecdn"},"content":{"rendered":"\n

\u0110o\u00e0n Th\u1ecb Mai, L\u01b0\u01a1ng Th\u1ecb Hoan, Nguy\u1ec5n Th\u1ecb Thu\u1ef3 D\u01b0\u01a1ng<\/strong> <\/p>\n

L\u00ea S\u01a1n, Nguy\u1ec5n Th\u1ecb M\u1ef9 H\u01b0\u01a1ng, Nguy\u1ec5n V\u0103n Long<\/strong><\/strong> <\/p>\n

Trung t\u00e2m Nghi\u00ean c<\/em>\u1ee9u Gi\u1ed1ng c\u00e2y r\u1eebng<\/em> <\/p>\n

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/em> <\/p>\n

T\u00d3M T\u1eaeT<\/strong> <\/p>\n

N\u0103m 2006 v\u00e0 2007, Trung t\u00e2m Nghi\u00ean c\u1ee9u Gi\u1ed1ng c\u00e2y r\u1eebng – Vi\u1ec7n KHLN Vi\u1ec7t Nam \u0111\u00e3 thu th\u1eadp, tuy\u1ec3n ch\u1ecdn m\u1ed9t s\u1ed1 d\u00f2ng t\u1ebfch c\u00f3 ti\u1ec1m n\u0103ng sinh tr\u01b0\u1edfng t\u1ed1t v\u00e0 \u0111\u00e3 ti\u1ebfn h\u00e0nh nh\u00e2n gi\u1ed1ng b\u1eb1ng nu\u00f4i c\u1ea5y m\u00f4. K\u1ebft qu\u1ea3 cho th\u1ea5y: Kh\u1eed tr\u00f9ng m\u1eabu b\u1eb1ng HgCl2<\/sub> 0,05% trong th\u1eddi gian 10 ph\u00fat cho k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t, \u0111\u1ea1t tr\u00ean 13%, th\u1eddi gian l\u1ea5y m\u1eabu t\u1eeb th\u00e1ng 2- 8 cho t\u1ef7 l\u1ec7 b\u1eadt ch\u1ed3i cao, \u0111\u1ea1t 15%. H\u1ec7 s\u1ed1 nh\u00e2n ch\u1ed3i c\u1ee7a T\u1ebfch \u1edf m\u00f4i tr\u01b0\u1eddng WPM cao \u0111\u1ea1t 2,10 ch\u1ed3i\/c\u1ee5m. Song, n\u1ebfu so s\u00e1nh v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng ch\u1ed3i th\u00ec m\u00f4i tr\u01b0\u1eddng MS l\u1ea1i l\u00e0 t\u1ed1t nh\u1ea5t. Ra r\u1ec5 b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ch\u1ea5m thu\u1ed1c b\u1ed9t TTG cho t\u1ef7 l\u1ec7 ra r\u1ec5 \u0111\u1ea1t 98,15%, cao h\u01a1n ra r\u1ec5 trong l\u1ecd. <\/p>\n

T\u1eeb kho\u00e1: <\/strong>T\u1ebfch, nu\u00f4i c\u1ea5y m\u00f4, t\u1ef7 l\u1ec7 ra r\u1ec5 <\/p>\n

\u0110\u1eb6T V\u1ea4N \u0110\u1ec0<\/strong> <\/p>\n

Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, nghi\u00ean c\u1ee9u ch\u1ecdn gi\u1ed1ng cho m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba v\u00e0 nh\u1eadp n\u1ed9i c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf \u0111ang \u0111\u01b0\u1ee3c tri\u1ec3n khai th\u1ef1c hi\u1ec7n r\u1ed9ng r\u00e3i.G\u1ed7 T\u1ebfch \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn trong x\u00e2y d\u1ef1ng v\u00e0 l\u00e0m \u0111\u1ed3 g\u1ed7 gia d\u1ee5ng v\u00ec c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ed1i m\u1ecdt, ch\u1ecbu n\u01b0\u1edbc l\u00e2u ng\u00e0y, m\u1eb7t g\u1ed7 c\u00f3 \u0111\u1ed9 b\u00f3ng cao v\u00e0 th\u1edb g\u1ed7 m\u1ecbn c\u00f3 th\u1ec3 b\u00f3c th\u00e0nh t\u1ea5m m\u1ecfng. L\u00e0 lo\u00e0i c\u00e2y c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng g\u1ed7 cao l\u1ea1i c\u00f3 t\u1ef7 tr\u1ecdng nh\u1eb9, \u00edt b\u1ecb h\u00e0 b\u00e1m, ch\u1ecbu \u0111\u01b0\u1ee3c va \u0111\u1eadp v\u00e0 ng\u00e2m n\u01b0\u1edbc m\u1eb7n n\u00ean g\u1ed7 T\u1ebfch c\u00f2n \u0111\u01b0\u1ee3c d\u00f9ng ph\u1ed5 bi\u1ebfn trong c\u00f4ng nghi\u1ec7p \u0111\u00f3ng t\u00e0u. M\u1eb7t kh\u00e1c, nhu c\u1ea7u th\u01b0\u01a1ng m\u1ea1i c\u1ee7a g\u1ed7 T\u1ebfch ng\u00e0y c\u00e0ng t\u0103ng b\u1edfi n\u00f3 c\u00f3 th\u1ec3 thay th\u1ebf m\u1ed9t s\u1ed1 lo\u00e0i g\u1ed7 qu\u00fd kh\u00e1c (Kjaer Lauridsen v\u00e0 Wellendorf, 1995). <\/p>\n

\u0110\u1ea7u nh\u1eefng n\u0103m 30 c\u1ee7a th\u1ebf k\u1ef7 20, T\u1ebfch \u0111\u01b0\u1ee3c tr\u1ed3ng th\u0103m d\u00f2 \u1edf c\u00f4ng vi\u00ean ho\u1eb7c tr\u00ean \u0111\u01b0\u1eddng ph\u1ed1 t\u1ea1i nhi\u1ec1u t\u1ec9nh ph\u00eda B\u1eafc n\u01b0\u1edbc ta nh\u01b0 H\u00e0 Giang, Tuy\u00ean Quang, S\u01a1n La, Lai Ch\u00e2u, H\u00e0 N\u1ed9i,\u2026 C\u0169ng trong th\u1eddi gian \u0111\u00f3, T\u1ebfch \u0111\u00e3 \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng th\u00e0nh nh\u1eefng khu r\u1eebng nh\u1ecf \u1edf L\u1ed9c Ninh, t\u1ec9nh B\u00ecnh Ph\u01b0\u1edbc. V\u00e0o nh\u1eefng n\u0103m 60, v\u1edbi ngu\u1ed3n gi\u1ed1ng thu h\u00e1i t\u1eeb c\u00e2y \u0111\u00e3 tr\u1ed3ng th\u00e0nh c\u00f4ng m\u1ed9t khu r\u1eebng T\u1ebfch c\u00f3 di\u1ec7n t\u00edch 200ha t\u1ea1i \u0110\u1ecbnh Qu\u00e1n, t\u1ec9nh \u0110\u1ed3ng Nai v\u00e0 m\u1ed9t s\u1ed1 l\u00e2m ph\u1ea7n kh\u00e1c trong \u0111\u00f3 c\u00f3 khu tr\u1ed3ng T\u1ebfch r\u1ed9ng 5ha t\u1ea1i Eak-Mat, t\u1ec9nh \u0110\u1eafc L\u1eafc. Sau n\u0103m 1975, c\u00e2y T\u1ebfch \u0111\u01b0\u1ee3c tr\u1ed3ng m\u1edf r\u1ed9ng \u1edf nhi\u1ec1u l\u00e2m tr\u01b0\u1eddng c\u00e1c t\u1ec9nh mi\u1ec1n \u0110\u00f4ng Nam B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean nh\u01b0 \u0110\u1ed3ng Nai, B\u00ecnh Ph\u01b0\u1edbc, T\u00e2y Ninh, \u0110\u1eafc L\u1eafc, Gia Lai, Kom Tum\u2026 (Tr\u1ea7n V\u0103n S\u00e2m, 2000). Di\u1ec7n t\u00edch tr\u1ed3ng T\u1ebfch \u1edf n\u01b0\u1edbc ta \u0111\u1ea1t kho\u1ea3ng 1.500ha. Tuy nhi\u00ean, do ch\u01b0a c\u00f3 gi\u1ed1ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n n\u00ean ch\u1ea5t l\u01b0\u1ee3ng r\u1eebng kh\u00f4ng cao, n\u0103ng su\u1ea5t c\u00f2n r\u1ea5t th\u1ea5p, ch\u1ec9 \u0111\u1ea1t t\u1eeb 9 \u0111\u1ebfn 12m3<\/sup>\/n\u0103m). <\/p>\n

C\u1eadp nh\u1eadt t\u1ea1i \u0111\u00e2y<\/a><\/strong> <\/p>\n","protected":false},"excerpt":{"rendered":"

\n \n<\/p>\n

\nN\u0103m 2006 và 2007, Trung tâm Nghiên c\u1ee9u Gi\u1ed1ng cây r\u1eebng – Vi\u1ec7n KHLN Vi\u1ec7t Nam \u0111ã thu th\u1eadp, tuy\u1ec3n ch\u1ecdn m\u1ed9t s\u1ed1 dòng t\u1ebfch có ti\u1ec1m n\u0103ng sinh tr\u01b0\u1edfng t\u1ed1t và \u0111ã ti\u1ebfn hành nhân gi\u1ed1ng b\u1eb1ng nuôi c\u1ea5y mô. K\u1ebft qu\u1ea3 cho th\u1ea5y: Kh\u1eed trùng m\u1eabu b\u1eb1ng HgCl2<\/sub> 0,05% trong th\u1eddi gian 10 phút cho k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t, \u0111\u1ea1t trên 13%, th\u1eddi gian l\u1ea5y m\u1eabu t\u1eeb tháng 2- 8 cho t\u1ef7 l\u1ec7 b\u1eadt ch\u1ed3i cao, \u0111\u1ea1t 15%. H\u1ec7 s\u1ed1 nhân ch\u1ed3i c\u1ee7a T\u1ebfch \u1edf môi tr\u01b0\u1eddng WPM cao \u0111\u1ea1t 2,10 ch\u1ed3i\/c\u1ee5m. Song, n\u1ebfu so sánh v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng ch\u1ed3i thì môi tr\u01b0\u1eddng MS l\u1ea1i là t\u1ed1t nh\u1ea5t. Ra r\u1ec5 b\u1eb1ng ph\u01b0\u01a1ng pháp ch\u1ea5m thu\u1ed1c b\u1ed9t TTG cho t\u1ef7 l\u1ec7 ra r\u1ec5 \u0111\u1ea1t 98,15%, cao h\u01a1n ra r\u1ec5 trong l\u1ecd.<\/font><\/font><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9080"}],"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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=9080"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9080\/revisions"}],"predecessor-version":[{"id":10534,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9080\/revisions\/10534"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9080"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9080"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}