{"id":658,"date":"2017-03-09T14:22:41","date_gmt":"2017-03-09T07:22:41","guid":{"rendered":"http:\/\/demo.prc.maiatech.com.vn\/?p=658"},"modified":"2017-03-09T14:22:41","modified_gmt":"2017-03-09T07:22:41","slug":"nghien-cuu-a%cc%89nh-huo%cc%89ng-cu%cc%89a-do%cc%a3-a%cc%89m-dat-toi-su%cc%a3-phat-trie%cc%89n-cua-benh-lo-co-re-dau-co-ve-va-kha-nang-uc-che-be%cc%a3nh-cu%cc%89a-nam-trichoder","status":"publish","type":"post","link":"https:\/\/prc.org.vn\/?p=658","title":{"rendered":"Nghi\u00ean c\u01b0\u0301u a\u0309nh h\u01b0\u01a1\u0309ng cu\u0309a \u0111\u00f4\u0323 \u00e2\u0309m \u0111\u00e2\u0301t t\u01a1\u0301i s\u01b0\u0323 pha\u0301t tri\u00ea\u0309n c\u1ee7a b\u1ec7nh l\u1edf c\u1ed5 r\u1ec5 \u0111\u1eadu c\u00f4 ve v\u00e0 kh\u1ea3 n\u0103ng \u1ee9c ch\u1ebf b\u00ea\u0323nh cu\u0309a n\u1ea5m Trichoderma harzianum"},"content":{"rendered":"<table>\n<tbody>\n<tr>\n<td colspan=\"2\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 N\u1ea5m<em> Rhizoctonia solani<\/em> g\u00e2y b\u1ec7nh l\u1edf c\u1ed5 r\u1ec5 l\u00e0 m\u1ed9t lo\u1ea1i n\u1ea5m \u0111\u1ea5t \u0111a th\u1ef1c g\u00e2y b\u1ec7nh kh\u00e1 nghi\u00eam tr\u1ecdng v\u00e0 ph\u1ed5 bi\u1ebfn trong s\u1ea3n xu\u1ea5t tr\u00ean nhi\u1ec1u \u0111\u1ed1i t\u01b0\u1ee3ng c\u00e2y tr\u1ed3ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u00ean nh\u1eefng lo\u1ea1i c\u00e2y tr\u1ed3ng ch\u00ednh nh\u01b0: l\u00faa, \u0111\u1eadu, c\u00e0, d\u01b0a chu\u1ed9t v\u00e0 thu\u1ed1c l\u00e1&#8230;(F\u00fchrer Ithurrart et al., 2004). N\u1ea5m <em>R. solani<\/em> c\u00f3 th\u1ec3 g\u00e2y ra kh\u00e1 nhi\u1ec1u tri\u1ec7u ch\u1ee9ng kh\u00e1c nhau nh\u01b0: h\u00e9o r\u0169 c\u00e2y con, th\u1ed1i g\u1ed1c, l\u1edf c\u1ed5 r\u1ec5, th\u1ed1i th\u00e2n m\u1ea7m, th\u1ed1i qu\u1ea3 v\u00e0 lo\u00e9t th\u00e2n (Schwartz et al., 2007).<\/p>\n<p>B\u1ec7nh l\u1edf c\u1ed5 r\u1ec5 g\u00e2y ra b\u1edfi n\u1ea5m <em>R. solani<\/em> l\u00e0 b\u1ec7nh n\u1ea5m g\u00e2y \u1ea3nh h\u01b0\u1edfng r\u1ea5t quan tr\u1ecdng tr\u00ean c\u00e2y \u0111\u1eadu, ch\u00fang xu\u1ea5t hi\u1ec7n ph\u1ed5 bi\u1ebfn \u1edf h\u1ea7u h\u1ebft c\u00e1c v\u00f9ng tr\u1ed3ng \u0111\u1eadu tr\u00ean th\u1ebf gi\u1edbi. B\u1ec7nh h\u1ea1i nghi\u00eam tr\u1ecdng l\u00e0m gi\u1ea3m t\u1edbi 60% n\u0103ng su\u1ea5t \u0111\u1eadu, \u0111\u1eb7c bi\u1ec7t l\u00e0 khu v\u1ef1c nhi\u1ec7t \u0111\u1edbi (Benhamou and Chet, 1993). \u1ede Vi\u1ec7t Nam, b\u1ec7nh g\u00e2y h\u1ea1i m\u1ea1nh \u1edf nh\u1eefng v\u00f9ng tr\u1ed3ng \u0111\u1eadu \u0111\u1ed7 thu\u1ed9c \u0111\u1ed3ng b\u1eb1ng, trung du v\u00e0 mi\u1ec1n n\u00fai. M\u1eb7c d\u00f9 b\u1ec7nh c\u00f3 th\u1ec3 g\u00e2y h\u1ea1i \u1edf t\u1ea5t c\u1ea3 c\u00e1c th\u1eddi k\u1ef3 sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e2y, tuy nhi\u00ean b\u1ec7nh g\u00e2y h\u1ea1i ch\u1ee7 y\u1ebfu v\u00e0o giai \u0111o\u1ea1n c\u00e2y con. B\u1ec7nh h\u1ea1i n\u1eb7ng l\u00e0m c\u00e2y g\u1ee5c ch\u1ebft h\u00e0ng lo\u1ea1t n\u00ean c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u1ec7nh ch\u1ebft r\u1ea1p c\u00e2y con. Hi\u1ec7n nay, thu\u1ed1c tr\u1eeb n\u1ea5m, gi\u1ed1ng kh\u00e1ng b\u1ec7nh, bi\u1ec7n ph\u00e1p canh t\u00e1c truy\u1ec1n th\u1ed1ng v\u00e0 ph\u00f2ng tr\u1eeb sinh h\u1ecdc \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m so\u00e1t b\u1ec7nh, tuy nhi\u00ean ch\u01b0a c\u00f3 bi\u1ec7n ph\u00e1p \u0111\u01a1n l\u1ebb n\u00e0o mang l\u1ea1i gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 trong ph\u00f2ng tr\u1eeb b\u1ec7nh l\u1edf c\u1ed5 r\u1ec5 (F\u00fchrer Ithurrart et al., 2004). M\u1ed9t s\u1ed1 nghi\u00ean c\u1ee9u c\u0169ng ch\u1ec9 ra r\u1eb1ng, y\u1ebfu t\u1ed1 \u0111\u1ea5t v\u00e0 nh\u1eefng nh\u00e2n t\u1ed1 li\u00ean quan nh\u01b0 \u0111\u1ed9 \u1ea9m \u0111\u1ea5t \u1ea3nh h\u01b0\u1edfng t\u1edbi s\u1ef1 ph\u00e1t sinh v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a b\u1ec7nh l\u1edf c\u1ed5 r\u1ec5 c\u0169ng nh\u01b0 hi\u1ec7u l\u1ef1c ki\u1ec3m so\u00e1t b\u1ec7nh c\u1ee7a n\u1ea5m \u0111\u1ed1i kh\u00e1ng <em>Trichoderma harzianum<\/em> (Danielson and Davey, 1973).<br \/>\nV\u1eadt li\u1ec7u nghi\u00ean c\u1ee9u l\u00e0: Gi\u1ed1ng \u0111\u1eadu c\u00f4 ve Speedy (<em>Phaseolus vulgaris<\/em> L.), ch\u1ee7ng n\u1ea5m R. solani AG-4 \u0111\u01b0\u1ee3c ph\u00e2n l\u1eadp t\u1eeb \u0111\u1eadu c\u00f4 ve \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho th\u00ed nghi\u1ec7m l\u00e2y nhi\u1ec5m v\u00e0 ch\u1ee7ng n\u1ea5m \u0111\u1ed1i kh\u00e1ng <em>T. harzianum<\/em> T-12 \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb Vi\u1ec7n B\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Hannover.<br \/>\nNghi\u00ean c\u1ee9u n\u00e0y gi\u00fap ph\u00e1t hi\u1ec7n v\u00e0 b\u1ed5 sung ki\u1ebfn th\u1ee9c li\u00ean quan \u0111\u1ebfn vai tr\u00f2 c\u1ee7a \u0111\u1ed9 \u1ea9m \u0111\u1ea5t \u0111\u1ed1i v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a b\u1ec7nh l\u1edf c\u1ed5 r\u1ec5 \u0111\u1eadu g\u00e2y ra b\u1edfi n\u1ea5m <em>R. solani<\/em> v\u00e0 hi\u1ec7u qu\u1ea3 ph\u00f2ng tr\u1eeb sinh h\u1ecdc s\u1eed d\u1ee5ng n\u1ea5m \u0111\u1ed1i kh\u00e1ng <em>T. harzianum.<\/em><\/p>\n<p>S\u1ef1 ph\u00e1t sinh x\u00e2m nhi\u1ec5m v\u00e0 g\u00e2y h\u1ea1i c\u1ee7a b\u1ec7nh l\u1edf c\u1ed5 r\u1ec5 \u0111\u1eadu trong \u0111\u1ea5t v\u00e0 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u1ea5m <em>T. harzianum<\/em> kh\u00f4ng kh\u00e1c bi\u1ec7t \u1edf 4 \u1ea9m \u0111\u1ed9 \u0111\u1ea5t th\u00ed nghi\u1ec7m (20, 30, 42 v\u00e0 57%);<\/p>\n<p><em>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/em>N\u1ea5m<em> T. harzianum<\/em> c\u00f3 hi\u1ec7u qu\u1ea3 cao trong vi\u1ec7c \u1ee9c ch\u1ebf s\u1ef1 x\u00e2m nhi\u1ec5m v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a b\u1ec7nh l\u1edf c\u1ed5 r\u1ec5 \u0111\u1eadu.<\/p>\n<p>Xem b\u00e1o c\u00e1o chi ti\u1ebft <a href=\"https:\/\/prc.maiatech.com.vn\/UserFiles\/File\/Bao%20cao%20khoa%20hoc\/2.%20NC%20su%20phat%20trien%20benh%20lo%20co%20re.pdf\">t\u1ea1i \u0111\u00e2y<\/a><\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\">Nguy\u1ec5n Tr\u01b0\u1eddng V\u01b0\u01a1ng &amp; cs<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 N\u1ea5m Rhizoctonia solani g\u00e2y b\u1ec7nh l\u1edf c\u1ed5 r\u1ec5 l\u00e0 m\u1ed9t lo\u1ea1i n\u1ea5m \u0111\u1ea5t \u0111a th\u1ef1c g\u00e2y b\u1ec7nh kh\u00e1 nghi\u00eam<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[47],"tags":[],"_links":{"self":[{"href":"https:\/\/prc.org.vn\/index.php?rest_route=\/wp\/v2\/posts\/658"}],"collection":[{"href":"https:\/\/prc.org.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prc.org.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prc.org.vn\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/prc.org.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=658"}],"version-history":[{"count":1,"href":"https:\/\/prc.org.vn\/index.php?rest_route=\/wp\/v2\/posts\/658\/revisions"}],"predecessor-version":[{"id":659,"href":"https:\/\/prc.org.vn\/index.php?rest_route=\/wp\/v2\/posts\/658\/revisions\/659"}],"wp:attachment":[{"href":"https:\/\/prc.org.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=658"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prc.org.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=658"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prc.org.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}