{"id":6577,"date":"2012-06-26T03:27:01","date_gmt":"2012-06-25T20:27:01","guid":{"rendered":"http:\/\/antoansinhhoc.vn\/?p=2178"},"modified":"2012-06-26T03:27:01","modified_gmt":"2012-06-25T20:27:01","slug":"lien-ket-gen-lua-co-va-va-lua-thuan-de-tang-nong-do-carbon-dioxide","status":"publish","type":"post","link":"https:\/\/nbca.gov.vn\/lien-ket-gen-lua-co-va-va-lua-thuan-de-tang-nong-do-carbon-dioxide\/","title":{"rendered":"Li\u00ean k\u1ebft gen l\u00faa c\u1ecf v\u00e0 v\u00e0 l\u00faa thu\u1ea7n \u0111\u1ec3 t\u0103ng n\u1ed3ng \u0111\u1ed9 Carbon Dioxide"},"content":{"rendered":"
\n

M\u1ed9t nghi\u00ean c\u1ee9u m\u1edbi t\u1ea1i B\u1ed9 N\u00f4ng nghi\u1ec7p M\u1ef9 (USDA) \u1edf Beltsville, Md x\u00e1c nh\u1eadn r\u1eb1ng n\u1ed3ng \u0111\u1ed9 cacbon \u0111ioxit c\u1ee7a kh\u00ed quy\u1ec3n t\u0103ng s\u1ebd t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho c\u00e1c d\u00f2ng gen lai gi\u1eefa c\u00e2y l\u00faa hoang d\u00e3\/l\u00faa c\u1ecf v\u1edbi gi\u1ed1ng l\u00faa thu\u1ea7n. K\u1ebft qu\u1ea3 l\u00e0, c\u00e2y l\u00faa c\u00f3 th\u1ec3 mang nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m kh\u00f4ng mong mu\u1ed1n c\u1ee7a c\u00e2y l\u00faa c\u1ecf – nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m c\u00f3 th\u1ec3 s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ea3n xu\u1ea5t l\u00faa g\u1ea1o trong t\u01b0\u01a1ng lai.<\/span><\/p>\n

\u0110\u0103ng ng\u00e0y 26-06-2012<\/span> trong chuy\u00ean m\u1ee5c Tin th\u1ebf gi\u1edbi<\/a><\/p>\n<\/div>\n

\n

\u0110\u00e2y l\u00e0 nghi\u00ean c\u1ee9u \u0111\u1ea7u ti\u00ean ch\u1ee9ng minh r\u1eb1ng \u1ea3nh h\u01b0\u1edfng c\u1ee7a vi\u1ec7c t\u0103ng n\u1ed3ng \u0111\u1ed9 carbon dioxide trong kh\u00ed quy\u1ec3n kh\u00f4ng ch\u1ec9 bao g\u1ed3m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn d\u00f2ng gen gi\u1eefa ki\u1ec3u gen thu\u1ea7n c\u00f3 li\u00ean quan ch\u1eb7t ch\u1ebd v\u1edbi ki\u1ec3u gen c\u1ee7a c\u00e2y l\u00faa hoang, m\u00e0 c\u00f2n cho th\u1ea5y d\u00f2ng gen n\u00e0y kh\u00f4ng gi\u1ed1ng nhau. Kh\u1ea3o s\u00e1t \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh b\u1edfi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i c\u01a1 quan Nghi\u00ean c\u1ee9u n\u00f4ng nghi\u1ec7p (ARS) \u2013 c\u01a1 quan nghi\u00ean c\u1ee9u khoa h\u1ecdc n\u00f4ng nghi\u1ec7p ch\u00ednh c\u1ee7a USDA.
\nTheo Edward B. Knipling \u2013 m\u1ed9t nh\u00e0 qu\u1ea3n l\u00fd t\u1ea1i ARS, bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu to\u00e0n c\u1ea7u s\u1ebd \u0111\u00f2i h\u1ecfi ng\u01b0\u1eddi n\u00f4ng d\u00e2n ph\u1ea3i xem x\u00e9t l\u1ea1i chi\u1ebfn l\u01b0\u1ee3c s\u1ea3n xu\u1ea5t \u0111\u1ec3 \u0111\u00e1p \u1ee9ng v\u1edbi thay \u0111\u1ed5i th\u1eddi ti\u1ebft v\u00e0 nhu c\u1ea7u c\u00e2y tr\u1ed3ng. Nh\u1eefng ph\u00e1t hi\u1ec7n m\u1edbi n\u00e0y s\u1ebd gi\u00fap c\u00e1c nh\u00e0 lai t\u1ea1o gi\u1ed1ng x\u00e2y d\u1ef1ng v\u00e0 tr\u00ecnh di\u1ec5n c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 c\u00e1ch th\u1ee9c \u1ea3nh h\u01b0\u1edfng c\u1ee7a bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu \u0111\u1ebfn ph\u1ea3n \u1ee9ng c\u1ee7a c\u00e2y tr\u1ed3ng.
\nLew Ziska – nh\u00e0 sinh l\u00fd h\u1ecdc th\u1ef1c v\u1eadt c\u1ee7a ARS l\u00e0 ng\u01b0\u1eddi d\u1eabn d\u1eaft kh\u1ea3o s\u00e1t n\u00e0y. C\u00e1c c\u1ed9ng t\u00e1c vi\u00ean tham gia kh\u1ea3o s\u00e1t g\u1ed3m: David Gealy, Martha Tomecek, Aaron Jackson, v\u00e0 Howard Black. Ziska v\u00e0 Tomecek c\u00f4ng t\u00e1c t\u1ea1i Ph\u00f2ng th\u00ed nghi\u1ec7m bi\u1ebfn \u0111\u1ed5i to\u00e0n c\u1ea7u v\u00e0 h\u1ec7 th\u1ed1ng c\u00e2y tr\u1ed3ng tr\u1ef1c thu\u1ed9c ARS v\u00e0 \u1edf Beltsville, Md; nh\u1eefng nh\u00e0 khoa h\u1ecdc kh\u00e1c \u0111\u1ec1u c\u00f4ng t\u00e1c t\u1ea1i Trung t\u00e2m nghi\u00ean c\u1ee9u l\u00faa g\u1ea1o qu\u1ed1c gia Dale Bumpers tr\u1ef1c thu\u1ed9c ARS \u1edf Stuttgart, Ark.
\nL\u00faa c\u1ecf th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 l\u00faa \u0111\u1ecf c\u00f9ng lo\u00e0i v\u1edbi l\u00faa thu\u1ea7n v\u00e0 r\u1ea5t kh\u00f3 ki\u1ec3m so\u00e1t trong s\u1ea3n xu\u1ea5t. Nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 ti\u1ebfn h\u00e0nh m\u1ed9t nghi\u00ean c\u1ee9u k\u00e9o d\u00e0i 2 n\u0103m v\u1ec1 t\u0103ng tr\u01b0\u1edfng k\u1ebft h\u1ee3p v\u00e0 nghi\u00ean c\u1ee9u th\u1ef1c \u0111\u1ecba \u0111\u1ec3 kh\u1ea3o ch\u1ee9ng xem l\u00e0m th\u1ebf n\u00e0o n\u1ed3ng \u0111\u1ed9 carbon dioxide trong kh\u00f4ng kh\u00ed c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u0103ng tr\u01b0\u1edfng c\u1ee7a l\u00faa c\u1ecf v\u00e0 l\u00faa thu\u1ea7n \u0111\u1ed3ng th\u1eddi theo d\u00f5i trao \u0111\u1ed5i c\u1ee7a v\u1eadt li\u1ec7u di truy\u1ec1n gi\u1eefa hai d\u00f2ng n\u00e0y.
\nN\u1ed3ng \u0111\u1ed9 carbon dioxide trong v\u00f2ng 24h t\u1ea1i c\u00e1c ph\u00f2ng \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u1edf m\u1ee9c 300, 400 v\u00e0 600ppm. Nh\u1eefng n\u1ed3ng \u0111\u1ed9 n\u00e0y x\u1ea5p x\u1ec9 n\u1ed3ng \u0111\u1ed9 carbon dioxide trong kh\u00ed quy\u1ec3n hi\u1ec7n t\u1ea1i trong kho\u1ea3ng th\u1eddi gian cu\u1ed1i th\u1ebf k\u1ef7 19, n\u1ed3ng \u0111\u1ed9 hi\u1ec7n t\u1ea1i, v\u00e0 n\u1ed3ng \u0111\u1ed9 d\u1ef1 ki\u1ebfn v\u00e0o cu\u1ed1i th\u1ebf k\u1ef7 21 t\u01b0\u01a1ng \u1ee9ng.
\nKhi tr\u1ed3ng \u1edf n\u1ed3ng \u0111\u1ed9 carbon dioxide 400 ppm v\u00e0 ppm 600 ppm, c\u1ea3 hai d\u00f2ng l\u00faa \u0111\u00e2m ch\u1ed3i, tr\u1ed5 b\u00f4ng v\u00e0 cao h\u01a1n so v\u1edbi c\u00e2y \u0111\u01b0\u1ee3c tr\u1ed3ng \u1edf n\u1ed3ng \u0111\u1ed9 carbon dioxide l\u00e0 300 ppm. Tuy nhi\u00ean, nh\u1eefng thay \u0111\u1ed5i v\u1ec1 chi\u1ec1u cao m\u00e0 c\u00e1c nh\u00e0 khoa h\u1ecdc tin t\u01b0\u1edfng l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong vi\u1ec7c ph\u00e2n chia ph\u1ea5n hoa v\u00e0 do \u0111\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn d\u00f2ng gen l\u00e0 r\u00f5 r\u00e0ng h\u01a1n so v\u1edbi \u1edf c\u00e1c gi\u1ed1ng l\u00faa hoang.
\nS\u1ed1 l\u01b0\u1ee3ng hoa c\u1ee7a l\u00faa hoang tr\u1ed3ng trong n\u1ed3ng \u0111\u1ed9 600 ppm carbon dioxide \u0111\u00e3 t\u0103ng g\u1ea5p \u0111\u00f4i so v\u1edbi c\u00e2y l\u00faa tr\u1ed3ng \u1edf n\u1ed3ng \u0111\u1ed9 300 ppm – m\u1ed9t s\u1ef1 gia t\u0103ng l\u1edbn h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi t\u0103ng tr\u1ed5 hoa \u1edf l\u00faa thu\u1ea7n. V\u1edbi n\u1ed3ng \u0111\u1ed9 carbon dioxide l\u1edbn nh\u1ea5t, l\u00faa hoang tr\u1ed5 b\u00f4ng trung b\u00ecnh s\u1edbm h\u01a1n t\u00e1m ng\u00e0y – m\u1ed9t s\u1ef1 thay \u0111\u1ed5i gi\u00fap t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng chuy\u1ec3n giao ph\u1ea5n hoa gi\u1eefa hai d\u00f2ng l\u00faa.
\nC\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u sau \u0111\u00f3 \u0111\u00e3 ti\u1ebfn h\u00e0nh ph\u00e2n t\u00edch gen cho th\u1ebf h\u1ec7 lai c\u1ee7a hai gi\u1ed1ng l\u00faa n\u00e0y. K\u1ebft qu\u1ea3 c\u1ee7a nh\u1eefng th\u1eed nghi\u1ec7m n\u00e0y cho th\u1ea5y l\u00faa thu\u1ea7n ch\u1ec9 truy\u1ec1n m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf v\u1eadt li\u1ec7u di truy\u1ec1n sang d\u00f2ng l\u00faa c\u1ecf lai c\u1ee7a n\u00f3, ngay c\u1ea3 \u1edf n\u1ed3ng \u0111\u1ed9 carbon dioxide l\u1edbn nh\u1ea5t. Tuy nhi\u00ean, l\u00faa c\u1ecf chuy\u1ec3n \u0111\u00e3 m\u1ed9t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u di truy\u1ec1n t\u01b0\u01a1ng \u0111\u1ed1i l\u1edbn cho d\u00f2ng l\u00faa thu\u1ea7n lai c\u1ee7a n\u00f3, v\u1edbi s\u1ef1 kh\u00e1c bi\u1ec7t t\u1eeb 0,22% n\u1ed3ng \u0111\u1ed9 carbon dioxide c\u1ee7a 300 ppm \u0111\u1ebfn 0,71% \u1edf n\u1ed3ng \u0111\u1ed9 carbon dioxide c\u1ee7a 600 ppm.
\nVi\u1ec7c chuy\u1ec3n giao v\u1eadt li\u1ec7u di truy\u1ec1n c\u1ee7a d\u00f2ng l\u00faa c\u1ecf hoang d\u1ea1i cho d\u00f2ng l\u00faa thu\u1ea7n \u0111\u00e3 khi\u1ebfn h\u1ea1t gi\u1ed1ng \u0111\u01b0\u1ee3c t\u1ea1o ra mang nh\u1eefng \u0111\u1eb7c t\u00ednh c\u1ee7a l\u00faa c\u1ecf m\u00e0 c\u00f3 th\u1ec3 s\u1ebd l\u00e0 nh\u1eefng \u0111\u1eb7c t\u00ednh kh\u00f4ng mong mu\u1ed1n c\u00f3 \u1edf l\u00faa thu\u1ea7n.<\/p>\n

K\u1ebft qu\u1ea3 t\u1eeb nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean t\u1ea1p ch\u00ed PLoS ONE:<\/p>\n

http:\/\/www.ars.usda.gov\/is\/pr\/2012\/120523.htm<\/a>.<\/p>\n

Theo agbiotech.com.vn<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t nghi\u00ean c\u1ee9u m\u1edbi t\u1ea1i B\u1ed9 N\u00f4ng nghi\u1ec7p M\u1ef9 (USDA) \u1edf Beltsville, Md x\u00e1c nh\u1eadn r\u1eb1ng n\u1ed3ng \u0111\u1ed9 cacbon \u0111ioxit c\u1ee7a kh\u00ed quy\u1ec3n t\u0103ng s\u1ebd t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho c\u00e1c d\u00f2ng gen lai gi\u1eefa c\u00e2y l\u00faa hoang d\u00e3\/l\u00faa c\u1ecf v\u1edbi gi\u1ed1ng l\u00faa thu\u1ea7n. K\u1ebft qu\u1ea3 l\u00e0, c\u00e2y l\u00faa c\u00f3 th\u1ec3 mang nh\u1eefng \u0111\u1eb7c […]\n","protected":false},"author":1,"featured_media":6457,"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\/6577"}],"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=6577"}],"version-history":[{"count":0,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/posts\/6577\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media\/6457"}],"wp:attachment":[{"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/media?parent=6577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/categories?post=6577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbca.gov.vn\/wp-json\/wp\/v2\/tags?post=6577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}