{"id":8958,"date":"2007-07-02T04:29:10","date_gmt":"2007-07-01T21:29:10","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2007\/07\/buoc-dau-nghien-cuu-phong-tru-co-dai-ngoai-lai-xam-hai-rung-bang-nam-colletotrichum-truncatum-schewein-andrus-moore\/"},"modified":"2013-10-06T09:00:56","modified_gmt":"2013-10-06T02:00:56","slug":"buoc-dau-nghien-cuu-phong-tru-co-dai-ngoai-lai-xam-hai-rung-bang-nam-colletotrichum-truncatum-schewein-andrus-moore","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/buoc-dau-nghien-cuu-phong-tru-co-dai-ngoai-lai-xam-hai-rung-bang-nam-colletotrichum-truncatum-schewein-andrus-moore\/","title":{"rendered":"B\u01b0\u1edbc \u0111\u1ea7u nghi\u00ean c\u1ee9u ph\u00f2ng tr\u1eeb c\u1ecf d\u1ea1i ngo\u1ea1i lai x\u00e2m h\u1ea1i r\u1eebng b\u1eb1ng n\u1ea5m Colletotrichum truncatum (Schewein) Andrus & Moore"},"content":{"rendered":"<\/p>\n

Nguy\u1ec5n Th\u1ecb Thu\u00fd Nga, Ph\u1ea1m Quang Thu<\/strong> <\/p>\n

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

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

N\u1ea5m Colletotrichum truncatum<\/em> (Schewein) Andrus & Moore \u0111\u01b0\u1ee3c ph\u00e2n l\u1eadp t\u1eeb c\u00e2y C\u1ecf b\u1ecb b\u1ec7nh. Nu\u00f4i c\u1ea5y thu\u1ea7n khi\u1ebft n\u1ea5m tr\u00ean m\u00f4i tr\u01b0\u1eddng dinh d\u01b0\u1ee1ng PDA sau 18 \u0111\u1ebfn 22 ng\u00e0y, s\u1ee3i n\u1ea5m h\u00ecnh th\u00e0nh b\u00e0o t\u1eed v\u00f4 t\u00ednh. S\u1eed d\u1ee5ng dung d\u1ecbch b\u00e0o t\u1eed v\u00f4 t\u00ednh v\u1edbi n\u1ed3ng \u0111\u1ed9 1 x 106 <\/sup>t\u1ebf b\u00e0o\/ml \u0111\u1ec3 nhi\u1ec5m v\u00e0o c\u00e0nh v\u00e0 l\u00e1 c\u00e2y C\u1ecf l\u00e0o (Eupatorium odoratum) <\/em>v\u00e0 c\u00e2y Mai D\u01b0\u01a1ng (Mimosa pigra). <\/em>Sau 48h C\u00e2y C\u1ecf l\u00e0o v\u00e0 Mai d\u01b0\u01a1ng \u0111\u00e3 b\u1ecb nhi\u1ec5m b\u1ec7nh v\u1edbi t\u1ef7 l\u1ec7 100%, m\u1ee9c \u0111\u1ed9 b\u1ecb b\u1ec7nh t\u0103ng d\u1ea7n theo th\u1eddi gian th\u00ed nghi\u1ec7m, \u0111\u1ea1t m\u1ee9c \u0111\u1ed9 b\u1ecb b\u1ec7nh cao nh\u1ea5t v\u1edbi ch\u1ec9 s\u1ed1 l\u00e02.4 \u0111\u1ed1i v\u1edbi C\u1ecf l\u00e0o v\u00e0 3.6 \u0111\u1ed1i v\u1edbi c\u00e2y Mai d\u01b0\u01a1ng. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u n\u00e0y r\u1ea5t c\u00f3 \u00fd ngh\u0129a l\u1edbn v\u1ec1 kinh t\u1ebf v\u00e0 m\u00f4i tr\u01b0\u1eddng cho vi\u1ec7c ki\u1ec3m so\u00e1t c\u1ecf d\u1ea1i ngo\u1ea1i lai x\u00e2m l\u1ea5n trong c\u00e1c h\u1ec7 sinh th\u00e1i l\u00e2m nghi\u1ec7p \u1edfn\u01b0\u1edbc ta. <\/p>\n

T\u1eeb kho\u00e1: <\/strong>Colletotrichum truncatum,<\/em> C\u1ecf l\u00e0o (Eupatorium odoratum),<\/em> Mai D\u01b0\u01a1ng (Mimosa pigra).<\/em> <\/p>\n

M\u1ede \u0110\u1ea6U<\/strong> <\/p>\n

M\u1ed9t s\u1ed1 lo\u00e0i \u0111\u1ed9ng v\u1eadt v\u00e0 vi sinh v\u1eadt do nhi\u1ec1u nguy\u00ean nh\u00e2n kh\u00e1c nhau \u0111\u00e3 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn s\u1ed1ng \u1edf ngo\u00e0i khu ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean l\u00e2u \u0111\u1eddi tr\u01b0\u1edbc \u0111\u00e2y c\u1ee7a ch\u00fang, do kh\u00f4ng b\u1ecb c\u1ea1nh tranh hay c\u00f3 \u0111i\u1ec1u ki\u1ec7n s\u1ed1ng thu\u1eadn l\u1ee3i, c\u00e1c lo\u00e0i m\u1edbi du nh\u1eadp c\u00f3 \u0111i\u1ec1u ki\u1ec7n sinh s\u00f4i, n\u1ea9y n\u1edf nhanh v\u00e0 b\u00f9ng ph\u00e1t v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng l\u1ea5n \u00e1t, g\u00e2y h\u1ea1i c\u00e1c sinh v\u1eadt thu\u1ed9c h\u1ec7 sinh th\u00e1i m\u1edbi \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00e1c lo\u00e0i ngo\u1ea1i lai x\u00e2m h\u1ea1i ( IUCN, Vi\u1ec7t Nam, 2003. Sinh v\u1eadt ngo\u1ea1i lai x\u00e2m h\u1ea1i, s\u1ef1 x\u00e2m l\u0103ng th\u1ea7m l\u1eb7ng. HAKI, H\u00e0 N\u1ed9i). H\u1ea7u h\u1ebft c\u00e1c h\u1ec7 (hay m\u1ed9t s\u1ed1 h\u1ec7) sinh th\u00e1i r\u1eebng n\u01b0\u1edbc ta k\u1ec3 c\u1ea3 r\u1eebng t\u1ef1 nhi\u00ean v\u00e0 r\u1eebng tr\u1ed3ng trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y \u0111\u00e3 b\u1ecb x\u00e2m l\u1ea5n b\u1edfi m\u1ed9t s\u1ed1 lo\u00e0i th\u1ef1c v\u1eadt ngo\u1ea1i lai nguy h\u1ea1i. trong \u0111\u00f3 \u0111\u00e1ng ch\u00fa \u00fd nh\u1ea5t l\u00e0 c\u00e2yC\u1ecf l\u00e0o (Eupatorium odoratum <\/em>L.),<\/em> c\u00e2y Mai d\u01b0\u01a1ng (Mimosa pigra <\/em>L.) v\u00e0 m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y kh\u00e1c. C\u00e2y C\u1ecf l\u00e0o c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb v\u00f9ng nhi\u1ec7t \u0111\u1edbi Ch\u00e2u M\u1ef9, \u0111\u01b0\u1ee3c th\u00e2m nh\u1eadp v\u00e0o Vi\u1ec7t Nam v\u00e0 \u0111\u00e3 g\u00e2y t\u00e1c \u0111\u1ed9ng kh\u00f4ng nh\u1ecf t\u1edbi sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n c\u1ee7a r\u1eebng tr\u1ed3ng v\u00e0 r\u1eebng t\u1ef1 nhi\u00ean. C\u00e2y Mai d\u01b0\u01a1ng c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb Trung v\u00e0 Nam M\u1ef9 ph\u00e1t tri\u1ec3n lan tr\u00e0n kh\u00f4ng ki\u1ec3m so\u00e1t kh\u1eafp m\u1ecdi n\u01a1i, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c h\u1ec7 sinh th\u00e1i ng\u1eadp v\u00e0 b\u00e1n ng\u1eadp n\u01b0\u1edbc, ven s\u00f4ng su\u1ed1i, ao h\u1ed3, tr\u00ean c\u00e1c c\u00e1nh \u0111\u1ed3ng b\u1ecf hoang v\u00e0 tr\u00ean c\u00e1c k\u00eanh r\u1ea1ch, l\u1ea5n \u00e1t, th\u1eadm ch\u00ed c\u00f2n l\u00e0m bi\u1ebfn m\u1ea5t nhi\u1ec1u lo\u00e0i \u0111\u1ed9ng th\u1ef1c v\u1eadt b\u1ea3n \u0111\u1ecba. \u0110i\u1ec1u n\u00e0y \u0111\u00e3 \u0111e do\u1ea1 v\u00e0 l\u00e0m gi\u1ea3m nghi\u00eam tr\u1ecdng \u0111a d\u1ea1ng sinh h\u1ecdc \u0111\u1ed9ng th\u1ef1c v\u1eadt, l\u00e0m m\u1ea5t t\u00ednh \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00e2n b\u1eb1ng h\u1ec7 sinh th\u00e1i, g\u00e2y t\u1eafc ngh\u1ebdn d\u00f2ng ch\u1ea3y, gi\u1ea3m dung l\u01b0\u1ee3ng ch\u1ee9a n\u01b0\u1edbc c\u1ee7a l\u00f2ng h\u1ed3. Nghi\u00ean c\u1ee9u c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng tr\u1eeb c\u00e1c lo\u00e0i th\u1ef1c v\u1eadt x\u00e2m l\u1ea5n nguy h\u1ea1i l\u00e0 vi\u1ec7c l\u00e0m c\u1ea7n thi\u1ebft nh\u1eb1m h\u1ea1n ch\u1ebf c\u00e1c t\u00e1c h\u1ea1i v\u00e0 \u0111\u01b0a ra gi\u1ea3i ph\u00e1p an to\u00e0n hi\u1ec7u qu\u1ea3, h\u1ea1n ch\u1ebf vi\u1ec7c s\u1eed d\u1ee5ng di\u1ec7t tr\u1eeb ho\u00e1 h\u1ecdc \u0111\u1eaft, nguy hi\u1ec3m c\u00f3 h\u1ea1i cho m\u00f4i tr\u01b0\u1eddng v\u00e0 con ng\u01b0\u1eddi. M\u1ed9t trong nh\u1eefng bi\u1ec7n ph\u00e1p ph\u1ed5 bi\u1ebfn h\u1eefu hi\u1ec7u hi\u1ec7n nay, \u0111\u01b0\u1ee3c nhi\u1ec1u n\u01b0\u1edbc quan t\u00e2m nghi\u00ean c\u1ee9u v\u00e0 khuy\u1ebfn kh\u00edch \u00e1p d\u1ee5ng l\u00e0 bi\u1ec7n ph\u00e1p sinh h\u1ecdc. Thu\u1ed1c di\u1ec7t c\u1ecf sinh h\u1ecdc l\u00e0 c\u00e1c lo\u00e0i n\u1ea5m g\u00e2y b\u1ec7nh cho c\u00e2y ch\u1ee7 c\u00f3 t\u00ednh ch\u1ea5t chuy\u00ean ho\u00e1, g\u00e2y b\u1ec7nh cho c\u00e1c lo\u00e0i c\u1ecf d\u1ea1i nh\u01b0ng kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng kh\u00e1c. <\/p>\n

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

N\u1ea5m Colletotrichum truncatum<\/em> (Schewein) Andrus & Moore <\/span>\u0111\u01b0\u1ee3c phân l\u1eadp t\u1eeb cây C\u1ecf b\u1ecb b\u1ec7nh. Nuôi c\u1ea5y thu\u1ea7n khi\u1ebft n\u1ea5m trên môi tr\u01b0\u1eddng dinh d\u01b0\u1ee1ng PDA sau 18 \u0111\u1ebfn 22 ngày, s\u1ee3i n\u1ea5m hình thành bào t\u1eed vô tính. S\u1eed d\u1ee5ng dung d\u1ecbch bào t\u1eed vô tính v\u1edbi n\u1ed3ng \u0111\u1ed9 1 x 106 <\/sup>t\u1ebf bào\/ml \u0111\u1ec3 nhi\u1ec5m vào cành và lá cây C\u1ecf lào (Eupatorium odoratum) <\/em>và cây Mai D\u01b0\u01a1ng (Mimosa pigra). <\/em>Sau 48h Cây C\u1ecf lào và Mai d\u01b0\u01a1ng \u0111ã b\u1ecb nhi\u1ec5m b\u1ec7nh v\u1edbi t\u1ef7 l\u1ec7 100%, m\u1ee9c \u0111\u1ed9 b\u1ecb b\u1ec7nh t\u0103ng d\u1ea7n theo th\u1eddi gian thí nghi\u1ec7m, \u0111\u1ea1t m\u1ee9c \u0111\u1ed9 b\u1ecb b\u1ec7nh cao nh\u1ea5t v\u1edbi ch\u1ec9 s\u1ed1 là  <\/span>2.4 \u0111\u1ed1i v\u1edbi C\u1ecf lào và 3.6 \u0111\u1ed1i v\u1edbi cây Mai d\u01b0\u01a1ng. K\u1ebft qu\u1ea3 nghiên c\u1ee9u này r\u1ea5t có ý ngh\u0129a l\u1edbn v\u1ec1 kinh t\u1ebf và môi tr\u01b0\u1eddng cho vi\u1ec7c ki\u1ec3m soát c\u1ecf d\u1ea1i ngo\u1ea1i lai xâm l\u1ea5n trong các h\u1ec7 sinh thái lâm nghi\u1ec7p \u1edf<\/span> <\/span>n\u01b0\u1edbc ta.<\/span><\/font><\/font> <\/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\/8958"}],"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=8958"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8958\/revisions"}],"predecessor-version":[{"id":10414,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8958\/revisions\/10414"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8958"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8958"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8958"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}