{"id":9302,"date":"2009-12-02T02:33:22","date_gmt":"2009-12-01T19:33:22","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/12\/nghien-cuu-anh-huong-cua-chat-kich-thich-gibberelline-ga-47-toi-su-ra-hoa-cua-vuon-giong-thong-nhua\/"},"modified":"2015-05-19T13:17:11","modified_gmt":"2015-05-19T06:17:11","slug":"nghien-cuu-anh-huong-cua-chat-kich-thich-gibberelline-ga-47-toi-su-ra-hoa-cua-vuon-giong-thong-nhua","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/nghien-cuu-anh-huong-cua-chat-kich-thich-gibberelline-ga-47-toi-su-ra-hoa-cua-vuon-giong-thong-nhua\/","title":{"rendered":"Nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a ch\u1ea5t k\u00edch th\u00edch Gibberelline GA 4\/7 t\u1edbi s\u1ef1 ra hoa c\u1ee7a v\u01b0\u1eddn gi\u1ed1ng Th\u00f4ng nh\u1ef1a"},"content":{"rendered":"

T\u1ea2I TO\u00c0N B\u1ed8 B\u00c0I B\u00c1O<\/a><\/p>\n

Nguy\u1ec5n Tu\u1ea5n H\u01b0ng<\/strong><\/p>\n

Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean, H\u00e0 Huy Th\u1ecbnh<\/strong><\/p>\n

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

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

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

Nghi\u00ean c\u1ee9u k\u00edch th\u00edch ra hoa s\u1edbm v\u00e0 v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn l\u00e0 m\u1ed9t h\u01b0\u1edbng nghi\u00ean c\u1ee9u quan tr\u1ecdng trong c\u1ea3i thi\u1ec7n gi\u1ed1ng c\u00e2y r\u1eebng nh\u1eb1m r\u00fat ng\u1eafn chu k\u1ef3 ch\u1ecdn gi\u1ed1ng v\u00e0 t\u0103ng s\u1ea3n l\u01b0\u1ee3ng h\u1ea1t gi\u1ed1ng, \u0111\u00e1p \u1ee9ng nhu c\u1ea7u tr\u1ed3ng r\u1eebng. Trong nh\u00f3m c\u00e1c h\u00f3a ch\u1ea5t s\u1eed d\u1ee5ng k\u00edch th\u00edch ra hoa th\u00ec nh\u00f3m Gibberrelin \u0111\u00e3 \u0111\u01b0\u1ee3c nhi\u1ec1u n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi \u00e1p d\u1ee5ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u00e1p d\u1ee5ng cho c\u00e1c lo\u00e0i th\u00f4ng. Th\u00f4ng kh\u00f4ng ch\u1ec9 l\u00e0 nh\u1eefng lo\u00e0i c\u00e2y l\u00e2u ra hoa m\u00e0 th\u1eddi gian t\u1eeb khi ra hoa \u0111\u1ebfn khi thu h\u00e1i h\u1ea1t k\u00e9o d\u00e0i g\u1ea7n 2 n\u0103m, ch\u01b0a k\u1ec3 \u0111\u1ebfn chu k\u1ef3 sai qu\u1ea3 c\u1ee7a ch\u00fang. M\u1ee5c ti\u00eau c\u1ee7a th\u00ed nghi\u1ec7m n\u00e0y l\u00e0 t\u00ecm ra th\u1eddi \u0111i\u1ec3m t\u1ed1i \u01b0u v\u00e0 n\u1ed3ng \u0111\u1ed9 Gibberelline GA4\/7 <\/sub>th\u00edch h\u1ee3p nh\u1ea5t \u0111\u1ed1i v\u1edbi lo\u00e0i Th\u00f4ng nh\u1ef1a (Pinus merkusii<\/em>).<\/p>\n

K\u1ebft qu\u1ea3 cho th\u1ea5y vi\u1ec7c d\u00f9ng ch\u1ea5t k\u00edch th\u00edch Gibberelline GA4\/7 <\/sub>\u0111\u00fang th\u1eddi \u0111i\u1ec3m v\u00e0 \u0111\u00fang li\u1ec1u l\u01b0\u1ee3ng \u0111\u00e3 l\u00e0m t\u0103ng s\u1ed1 l\u01b0\u1ee3ng n\u00f3n \u0111\u1ef1c v\u00e0 n\u00f3n c\u00e1i m\u1ed9t c\u00e1ch \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng kh\u00f4ng t\u00e1c \u0111\u1ed9ng. M\u1ed7i d\u00f2ng c\u00e2y gh\u00e9p kh\u00e1c nhau l\u1ea1i c\u00f3 ph\u1ea3n \u1ee9ng v\u1edbi li\u1ec1u l\u01b0\u1ee3ng Gibberelline GA4\/7<\/sub> l\u00e0 kh\u00e1c nhau. Tuy nhi\u00ean, li\u1ec1u l\u01b0\u1ee3ng ph\u00f9 h\u1ee3p nh\u1ea5t cho h\u1ea7u h\u1ebft c\u00e1c d\u00f2ng c\u00e2y Th\u00f4ng nh\u1ef1a gh\u00e9p \u1edf giai \u0111o\u1ea1n 11 tu\u1ed5i l\u00e0 150mg\/c\u00e2y v\u00e0 th\u1eddi gian t\u1ed1i \u01b0u nh\u1ea5t \u0111\u1ec3 k\u00edch th\u00edch l\u00e0 v\u00e0o th\u00e1ng 10 h\u00e0ng n\u0103m.<\/p>\n

T\u1eeb kho\u00e1: <\/strong>Th\u00f4ng nh\u1ef1a, Gibberelline GA4\/7<\/sub><\/p>\n","protected":false},"excerpt":{"rendered":"

\n \n<\/p>\n

\nNghiên c\u1ee9u kích thích ra hoa s\u1edbm và v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn là m\u1ed9t h\u01b0\u1edbng nghiên c\u1ee9u quan tr\u1ecdng trong c\u1ea3i thi\u1ec7n gi\u1ed1ng cây r\u1eebng nh\u1eb1m rút ng\u1eafn chu k\u1ef3 ch\u1ecdn gi\u1ed1ng và t\u0103ng s\u1ea3n l\u01b0\u1ee3ng h\u1ea1t gi\u1ed1ng, \u0111áp \u1ee9ng nhu c\u1ea7u tr\u1ed3ng r\u1eebng. Trong nhóm các hóa ch\u1ea5t s\u1eed d\u1ee5ng kích thích ra hoa thì nhóm Gibberrelin \u0111ã \u0111\u01b0\u1ee3c nhi\u1ec1u n\u01b0\u1edbc trên th\u1ebf gi\u1edbi áp d\u1ee5ng, \u0111\u1eb7c bi\u1ec7t là áp d\u1ee5ng cho các loài thông. Thông không ch\u1ec9 là nh\u1eefng loài cây lâu ra hoa mà th\u1eddi gian t\u1eeb khi ra hoa \u0111\u1ebfn khi thu hái h\u1ea1t kéo dài g\u1ea7n 2 n\u0103m, ch\u01b0a k\u1ec3 \u0111\u1ebfn chu k\u1ef3 sai qu\u1ea3 c\u1ee7a chúng. M\u1ee5c tiêu c\u1ee7a thí nghi\u1ec7m này là tìm ra th\u1eddi \u0111i\u1ec3m t\u1ed1i \u01b0u và n\u1ed3ng \u0111\u1ed9 Gibberelline GA4\/7 <\/sub>thích h\u1ee3p nh\u1ea5t \u0111\u1ed1i v\u1edbi loài Thông nh\u1ef1a (Pinus merkusii<\/em>).<\/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\/9302"}],"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=9302"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9302\/revisions"}],"predecessor-version":[{"id":12971,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9302\/revisions\/12971"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9302"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9302"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}