{"id":6668,"date":"2014-09-22T09:49:59","date_gmt":"2014-09-22T02:49:59","guid":{"rendered":"http:\/\/antoansinhhoc.vn\/?p=1652"},"modified":"2014-09-22T09:49:59","modified_gmt":"2014-09-22T02:49:59","slug":"phat-hien-gien-co-the-dan-den-cac-giong-dau-tuong-tot-hon-cho-khu-vuc-phia-bac-nuoc-my","status":"publish","type":"post","link":"https:\/\/nbca.gov.vn\/phat-hien-gien-co-the-dan-den-cac-giong-dau-tuong-tot-hon-cho-khu-vuc-phia-bac-nuoc-my\/","title":{"rendered":"Ph\u00e1t hi\u1ec7n gien c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c gi\u1ed1ng \u0111\u1eadu t\u01b0\u01a1ng t\u1ed1t h\u01a1n cho khu v\u1ef1c ph\u00eda B\u1eafc n\u01b0\u1edbc M\u1ef9"},"content":{"rendered":"
C\u00e1c nh\u00e0\u00a0nghi\u00ean c\u1ee9u t\u1eeb tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Purdue v\u00e0 \u0110\u1ea1i h\u1ecdc Nebraska-Lincoln \u0111\u00e3 kh\u00e1m ph\u00e1 ra m\u1ed9t gien \u0111\u1eadu t\u01b0\u01a1ng m\u00e0 \u0111\u1ed9t bi\u1ebfn c\u1ee7a gien n\u00e0y c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u0103ng tr\u01b0\u1edfng c\u1ee7a th\u00e2n th\u1ef1c v\u1eadt – m\u1ed9t ph\u00e1t hi\u1ec7n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c gi\u1ed1ng \u0111\u1eadu t\u01b0\u01a1ng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n cho khu v\u1ef1c ph\u00eda B\u1eafc n\u01b0\u1edbc M\u1ef9<\/span><\/div>\n
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Gi\u00e1o s\u01b0 n\u00f4ng h\u1ecdc c\u1ee7a Purdue l\u00e0 Jianxin Ma v\u00e0 c\u00e1c c\u1ed9ng s\u1ef1 \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u1ed9t gien \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Dt2, g\u00e2y ra t\u00ednh b\u00e1n x\u00e1c \u0111\u1ecbnh (semideterminacy) \u1edf c\u00e2y \u0111\u1eadu t\u01b0\u01a1ng. C\u00e2y \u0111\u1eadu t\u01b0\u01a1ng b\u00e1n x\u00e1c \u0111\u1ecbnh (Semideterminate) c\u00f3 k\u00edch th\u01b0\u1edbc trung b\u00ecnh c\u00f3 th\u1ec3 ti\u1ebfp t\u1ee5c t\u0103ng tr\u01b0\u1edfng, ngay c\u1ea3 sau khi ra hoa – c\u00f3 th\u1ec3 cho nhi\u1ec1u ho\u1eb7c cho nhi\u1ec1u qu\u1ea3 \u0111\u1eadu h\u01a1n so v\u1edbi gi\u1ed1ng mi\u1ec1n B\u1eafc hi\u1ec7n h\u00e0nh nh\u01b0ng l\u1ea1i kh\u00f4ng ph\u00e1t tri\u1ec3n chi\u1ec1u cao. Chi\u1ec1u cao c\u1ee7a ch\u00fang gi\u1ea3m khi\u1ebfn ch\u00fang c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu nhi\u1ec1u h\u01a1n v\u1edbi hi\u1ec7n t\u01b0\u1ee3ng o\u1eb1n ng\u00e3 ho\u1eb7c g\u00e3y th\u00e2n ch\u00ednh.<\/div>\n
“Gien n\u00e0y c\u00f3 th\u1ec3 gi\u00fap c\u1ea3i thi\u1ec7n n\u0103ng su\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng c\u1ee7a \u0111\u1eadu t\u01b0\u01a1ng cho c\u00e1c khu v\u1ef1c canh t\u00e1c c\u1ee5 th\u1ec3”, Ma n\u00f3i. “Hi\u1ec7n ch\u00fang ta c\u00f3 th\u1ec3 t\u1eadp trung v\u00e0o ph\u00e1t tri\u1ec3n nhi\u1ec1u gi\u1ed1ng \u0111\u1eadu t\u01b0\u01a1ng b\u00e1n x\u00e1c \u0111\u1ecbnh \u01b0u t\u00fa, c\u00f3 th\u1ec3 c\u00f3 hi\u1ec7u su\u1ea5t t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng h\u1ec7 th\u1ed1ng t\u01b0\u1edbi ti\u00eau v\u00e0 n\u0103ng su\u1ea5t cao nh\u01b0 Nebraska v\u00e0 khu v\u1ef1c \u0110\u00f4ng B\u1eafc bang Indiana.”<\/div>\n
C\u00e1c gi\u1ed1ng \u0111\u1eadu t\u01b0\u01a1ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c chia th\u00e0nh hai nh\u00f3m: kh\u00f4ng x\u00e1c \u0111\u1ecbnh v\u00e0 nh\u00f3m x\u00e1c \u0111\u1ecbnh. Nh\u00f3m kh\u00f4ng x\u00e1c \u0111\u1ecbnh l\u00e0 c\u00e1c c\u00e2y cao, th\u00e2n ch\u00ednh ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n sau khi ra hoa; v\u00e0 nh\u00f3m x\u00e1c \u0111\u1ecbnh c\u00f3 chi\u1ec1u cao th\u1ea5p h\u01a1n, r\u1eadm r\u1ea1p h\u01a1n, th\u00e2n ch\u00ednh ng\u1eebng t\u0103ng tr\u01b0\u1edfng khi hoa b\u1eaft \u0111\u1ea7u h\u00ecnh th\u00e0nh.<\/div>\n
C\u00e2y \u0111\u1eadu t\u01b0\u01a1ng x\u00e1c \u0111\u1ecbnh ph\u00e1t tri\u1ec3n m\u1ea1nh trong m\u00f9a sinh tr\u01b0\u1edfng d\u00e0i h\u01a1n \u1edf ph\u00eda Nam. Nh\u01b0ng chi\u1ec1u cao c\u1ee7a c\u00e1c gi\u1ed1ng kh\u00f4ng x\u00e1c \u0111\u1ecbnh l\u00e0m cho ch\u00fang d\u1ec5 b\u1ecb \u0111\u1ed5 ng\u1ea3.<\/div>\n
\u0110\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1eadu t\u01b0\u01a1ng \u1edf ph\u00eda B\u1eafc, c\u00e2y \u0111\u1eadu t\u01b0\u01a1ng b\u00e1n x\u00e1c \u0111\u1ecbnh c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t thay th\u1ebf trong hai nh\u00f3m n\u00e0y. \u0110\u1eadu t\u01b0\u01a1ng b\u00e1n x\u00e1c \u0111\u1ecbnh d\u1ec5 qu\u1ea3n l\u00fd, c\u00f3 n\u0103ng su\u1ea5t t\u01b0\u01a1ng t\u1ef1 ho\u1eb7c t\u1ed1t h\u01a1n so v\u1edbi c\u00e1c gi\u1ed1ng kh\u00f4ng x\u00e1c \u0111\u1ecbnh v\u00e0 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng cho m\u1ed9t m\u00f9a sinh tr\u01b0\u1edfng ng\u1eafn, Ma n\u00f3i.<\/div>\n
Ch\u1ec9 c\u00f3 m\u1ed9t gi\u1ed1ng \u0111\u1eadu t\u01b0\u01a1ng b\u00e1n x\u00e1c \u0111\u1ecbnh – gi\u1ed1ng NE3001 l\u00e0 ph\u1ed5 bi\u1ebfn t\u1ea1i M\u1ef9. C\u00f3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh c\u1ee7a gien Dt2 s\u1ebd cho ph\u00e9p Ma v\u00e0 c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p nh\u00e2n gi\u1ed1ng c\u00e2y tr\u1ed3ng t\u1ef1 nhi\u00ean \u0111\u1ec3 ph\u00e1t tri\u1ec3n nhi\u1ec1u gi\u1ed1ng c\u00e2y tr\u1ed3ng b\u00e1n x\u00e1c \u0111\u1ecbnh.<\/div>\n
“Ti\u1ec1m n\u0103ng v\u1ec1 m\u1ed9t gi\u1ed1ng \u0111\u1eadu t\u01b0\u01a1ng n\u0103ng su\u1ea5t \u1edf M\u1ef9 v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c kh\u00e1m ph\u00e1 \u0111\u1ea7y \u0111\u1ee7, m\u1ed9t ph\u1ea7n l\u00e0 do thi\u1ebfu gi\u1ed1ng b\u00e1n x\u00e1c \u0111\u1ecbnh”, \u00f4ng n\u00f3i. “Ch\u00fang t\u00f4i \u0111ang nghi\u00ean c\u1ee9u v\u1ec1 chuy\u1ec3n \u0111\u1ed5i c\u00e1c gi\u1ed1ng c\u00e2y tr\u1ed3ng kh\u00f4ng x\u00e1c \u0111\u1ecbnh c\u00f3 n\u0103ng su\u1ea5t cao sang c\u00e1c gi\u1ed1ng b\u00e1n x\u00e1c \u0111\u1ecbnh \u0111\u1ec3 ki\u1ec3m tra s\u1ea3n l\u01b0\u1ee3ng ti\u1ec1m n\u0103ng c\u1ee7a ch\u00fang”.<\/div>\n
Ma \u0111\u00e3 t\u1eebng x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c gien Dt1 \u2013 gien n\u00e0y g\u00e2y ra t\u00ednh b\u1ea5t \u0111\u1ecbnh \u1edf \u0111\u1eadu t\u01b0\u01a1ng. \u00d4ng \u0111\u00e3 s\u1eed d\u1ee5ng m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn di truy\u1ec1n t\u00edch h\u1ee3p \u0111\u1ec3 ph\u00e2n l\u1eadp v\u00e0 m\u00f4 t\u1ea3 gien Dt2. Sau khi x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c gien n\u00e0y, \u00f4ng \u0111\u01b0a n\u00f3 v\u00e0o gi\u1ed1ng kh\u00f4ng x\u00e1c \u0111\u1ecbnh \u0111\u1ec3 x\u00e1c nh\u1eadn r\u1eb1ng n\u00f3 khi\u1ebfn cho c\u00e2y tr\u1ed3ng tr\u1edf th\u00e0nh b\u00e1n x\u00e1c \u0111\u1ecbnh. Dt2 \u1ee9c ch\u1ebf bi\u1ec3u hi\u1ec7n c\u1ee7a Dt1 khi\u1ebfn cho c\u00e2y \u0111\u1eadu t\u01b0\u01a1ng ph\u00e1t tri\u1ec3n th\u1ea5p h\u01a1n.<\/div>\n
Ma cho bi\u1ebft \u0111\u1ed9t bi\u1ebfn d\u1ea1ng n\u00e0y d\u01b0\u1eddng nh\u01b0 l\u00e0 duy nh\u1ea5t \u0111\u1ed1i v\u1edbi \u0111\u1eadu t\u01b0\u01a1ng b\u1edfi \u0111\u1eb7c t\u00ednh b\u00e1n x\u00e1c \u0111\u1ecbnh \u1edf c\u00e1c c\u00e2y tr\u1ed3ng kh\u00e1c ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e0 chua v\u00e0 \u0111\u1eadu H\u00e0 Lan xanh l\u00e0 do m\u1ed9t c\u01a1 ch\u1ebf di truy\u1ec1n kh\u00e1c nhau g\u00e2y ra.<\/div>\n
James Specht – \u0111\u1ed3ng t\u00e1c gi\u1ea3 c\u1ee7a nghi\u00ean c\u1ee9u, gi\u00e1o s\u01b0 n\u00f4ng nghi\u1ec7p t\u1ea1i tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Nebraska-Lincoln, cho bi\u1ebft vi\u1ec7c x\u00e1c \u0111\u1ecbnh gien Dt2 mang l\u1ea1i cho c\u00e1c nh\u00e0 lai t\u1ea1o gi\u1ed1ng \u0111\u1eadu t\u01b0\u01a1ng m\u1ed9t c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd cho nh\u00e2n gi\u1ed1ng c\u00e2y tr\u1ed3ng n\u00e0y.<\/div>\n
“\u0110i\u1ec1u n\u00e0y mang l\u1ea1i cho c\u00e1c nh\u00e0 lai t\u1ea1o gi\u1ed1ng m\u1ed9t marker di truy\u1ec1n ho\u00e0n h\u1ea3o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u00ednh b\u00e1n x\u00e1c d\u1ecbnh trong c\u00e1c h\u1ea1t \u0111\u1eadu t\u01b0\u01a1ng v\u00e0 c\u00e2y gi\u1ed1ng”, \u00f4ng n\u00f3i.<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

C\u00e1c nh\u00e0\u00a0nghi\u00ean c\u1ee9u t\u1eeb tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Purdue v\u00e0 \u0110\u1ea1i h\u1ecdc Nebraska-Lincoln \u0111\u00e3 kh\u00e1m ph\u00e1 ra m\u1ed9t gien \u0111\u1eadu t\u01b0\u01a1ng m\u00e0 \u0111\u1ed9t bi\u1ebfn c\u1ee7a gien n\u00e0y c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u0103ng tr\u01b0\u1edfng c\u1ee7a th\u00e2n th\u1ef1c v\u1eadt – m\u1ed9t ph\u00e1t hi\u1ec7n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c gi\u1ed1ng \u0111\u1eadu t\u01b0\u01a1ng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3i […]\n","protected":false},"author":1,"featured_media":1645,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[87],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/6668"}],"collection":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/comments?post=6668"}],"version-history":[{"count":0,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/6668\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media\/1645"}],"wp:attachment":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media?parent=6668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/categories?post=6668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/tags?post=6668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}