{"id":9089,"date":"2009-04-20T08:34:09","date_gmt":"2009-04-20T01:34:09","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/04\/anh-huong-cua-dich-chiet-cac-bo-phan-cay-keo-lai-den-su-nay-mam-cua-hat-khao-vang-giang-huong-va-de-do\/"},"modified":"2013-10-06T09:01:19","modified_gmt":"2013-10-06T02:01:19","slug":"anh-huong-cua-dich-chiet-cac-bo-phan-cay-keo-lai-den-su-nay-mam-cua-hat-khao-vang-giang-huong-va-de-do","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/anh-huong-cua-dich-chiet-cac-bo-phan-cay-keo-lai-den-su-nay-mam-cua-hat-khao-vang-giang-huong-va-de-do\/","title":{"rendered":"\u1ea2nh h\u01b0\u1edfng c\u1ee7a d\u1ecbch chi\u1ebft c\u00e1c b\u1ed9 ph\u1eadn c\u00e2y Keo lai \u0111\u1ebfn s\u1ef1 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t Kh\u00e1o v\u00e0ng, Gi\u00e1ng h\u01b0\u01a1ng v\u00e0 D\u1ebb \u0111\u1ecf"},"content":{"rendered":"\n

H\u00e0 Th\u1ecb M\u1eebng, Ph\u1ea1m Ng\u1ecdc Th\u00e0nh<\/strong> <\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng <\/em><\/strong> <\/p>\n

L\u00ea Qu\u1ed1c Huy<\/strong> <\/p>\n

Trung t\u00e2m C\u00f4ng ngh\u1ec7 Sinh h\u1ecdc L\u00e2m nghi\u1ec7p<\/em> <\/p>\n

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

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

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y trong 3 lo\u1ea1i d\u1ecbch chi\u1ebft t\u1eeb l\u00e1, r\u1ec5 v\u00e0 th\u1ea3m m\u1ee5c c\u00e2y Keo lai th\u00ec d\u1ecbch chi\u1ebft t\u1eeb l\u00e1 c\u00f3 \u1ea3nh h\u01b0\u1edfng m\u1ea1nh nh\u1ea5t t\u1edbi t\u1ef7 l\u1ec7 v\u00e0 t\u1ed1c \u0111\u1ed9 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t Kh\u00e1o v\u00e0ng, Gi\u00e1ng h\u01b0\u01a1ng v\u00e0 D\u1ebb \u0111\u1ecf. D\u1ecbch chi\u1ebft l\u00e1 Keo lai \u1edf \u0111\u1ed9 \u0111\u1eadm \u0111\u1eb7c 30% \u0111\u00e3 l\u00e0m gi\u1ea3m t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m h\u1ea1t Kh\u00e1o v\u00e0ng xu\u1ed1ng 30,0% v\u00e0 h\u1ea1t Gi\u00e1ng h\u01b0\u01a1ng xu\u1ed1ng 27,7% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng; \u0111\u1ed1i v\u1edbi h\u1ea1t D\u1ebb \u0111\u1ecf, \u1edf c\u00f4ng th\u1ee9c x\u1eed l\u00fd d\u1ecbch chi\u1ebft l\u00e1 Keo lai \u0111\u1eadm \u0111\u1eb7c 20% v\u00e0 30% \u0111\u00e3 \u1ea3nh h\u01b0\u1edfng l\u00e0m gi\u1ea3m t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m xu\u1ed1ng 24,7% v\u00e0 28,7% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng (p=0,95). D\u1ecbch chi\u1ebft t\u1eeb r\u1ec5 ch\u1ec9 \u1ea3nh h\u01b0\u1edfng t\u1edbi n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t Gi\u00e1ng h\u01b0\u01a1ng \u1edf \u0111\u1ed9 \u0111\u1eadm \u0111\u1eb7c 30% (gi\u1ea3m 16,4%) v\u00e0 h\u1ea1t D\u1ebb \u0111\u1ecf \u1edf \u0111\u1ed9 \u0111\u1eadm \u0111\u1eb7c 20% & 30% (gi\u1ea3m 22,7 & 27,4% t\u01b0\u01a1ng \u1ee9ng so \u0111\u1ed1i ch\u1ee9ng). D\u1ecbch chi\u1ebft t\u1eeb th\u1ea3m m\u1ee5c Keo lai kh\u00f4ng \u1ea3nh h\u01b0\u1edfng t\u1edbi t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u1ee7a c\u00e1c lo\u1ea1i h\u1ea1t. T\u01b0\u01a1ng t\u1ef1 nh\u01b0 \u0111\u1ed1i v\u1edbi t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m, d\u1ecbch chi\u1ebft t\u1eeb l\u00e1 Keo lai c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u00f5 r\u1ec7t nh\u1ea5t t\u1edbi t\u1ed1c \u0111\u1ed9 n\u1ea3y m\u1ea7m c\u1ee7a c\u00e1c lo\u1ea1i h\u1ea1t nghi\u00ean c\u1ee9u, trong \u0111\u00f3, h\u1ea1t D\u1ebb \u0111\u1ecf b\u1ecb \u1ea3nh h\u01b0\u1edfng l\u00e0m gi\u1ea3m t\u1ed1c \u0111\u1ed9 n\u1ea3y m\u1ea7m so v\u1edbi \u0111\u1ed1i ch\u1ee9ng nhi\u1ec1u nh\u1ea5t (p=0,95). <\/p>\n

T\u1eeb kh\u00f3a:<\/strong> \u1ea3nh h\u01b0\u1edfng t\u01b0\u01a1ng t\u00e1c, Keo lai, Kh\u00e1o v\u00e0ng, Gi\u00e1ng h\u01b0\u01a1ng, D\u1ebb \u0111\u1ecf, d\u1ecbch chi\u1ebft, c\u1ea1nh tranh <\/p>\n

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

Theo H\u1ed9i Qu\u1ed1c t\u1ebf v\u1ec1 \u1ea3nh h\u01b0\u1edfng t\u01b0\u01a1ng t\u00e1c- IAS “\u1ea3nh h\u01b0\u1edfng t\u01b0\u01a1ng t\u00e1c” (Allelopathic effect) \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a \u0111\u1ec3 ch\u1ec9 t\u1ea5t c\u1ea3 nh\u1eefng t\u00e1c \u0111\u1ed9ng “t\u1ed1t”, “x\u1ea5u” qua l\u1ea1i gi\u1eefa m\u1ed9t lo\u00e0i c\u00e2y n\u00e0y v\u1edbi c\u00e1c lo\u00e0i th\u1ef1c v\u1eadt kh\u00e1c xung quanh th\u00f4ng qua c\u00e1c s\u1ea3n ph\u1ea9m trao \u0111\u1ed5i ch\u1ea5t th\u1ee9 c\u1ea5p (Allelochemicals) (Bansal, 2004). \u0110\u00e2y l\u00e0 d\u1ea1ng c\u1ea1nh tranh ho\u00e1 h\u1ecdc, kh\u00e1c v\u1edbi nh\u1eefng c\u1ea1nh tranh v\u1eadt l\u00fd th\u00f4ng th\u01b0\u1eddng v\u1ec1 dinh d\u01b0\u1ee1ng, \u00e1nh s\u00e1ng, kh\u00f4ng gian sinh tr\u01b0\u1edfng, vv… v\u00e0 l\u00e0 c\u01a1 s\u1edf c\u1ee7a qu\u00e1 tr\u00ecnh di\u1ec5n th\u1ebf t\u1ef1 nhi\u00ean, \u01b0u th\u1ebf lo\u00e0i v\u00e0 \u0111a d\u1ea1ng sinh h\u1ecdc (Chou, 2004). Kh\u00e1o v\u00e0ng (Machilus odoratissima<\/em> Ness), D\u1ebb \u0111\u1ecf (Lithocarpus ducampii<\/em> H. et A. Camus) v\u00e0 Gi\u00e1ng h\u01b0\u01a1ng (Pterocarpus macrocarpus<\/em> Kurz) l\u00e0c\u00e1c lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn b\u1ea3n \u0111\u1ecba c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao \u0111ang b\u1ecb khai th\u00e1c qu\u00e1 m\u1ee9c. \u0110\u00e3 \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m c\u1ea7n ph\u1ea3i tr\u1ed3ng ph\u1ee5c h\u1ed3i l\u1ea1i r\u1eebng c\u00e1c lo\u00e0i c\u00e2y n\u00e0y theo h\u01b0\u1edbng ti\u1ebfp c\u1eadn “Qu\u1ea3n l\u00fd b\u1ec1n v\u1eefng, th\u00e2n thi\u1ec7n v\u1edbi thi\u00ean nhi\u00ean “. Tuy nhi\u00ean, c\u00f2n thi\u1ebfu c\u00e1c c\u01a1 s\u1edf l\u00fd lu\u1eadn khoa h\u1ecdc v\u00e0 th\u1ef1c ti\u1ec5n li\u00ean quan t\u1edbi c\u00e1c nhu c\u1ea7u \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd- sinh th\u00e1i lo\u00e0i d\u01b0\u1edbi quan \u0111i\u1ec3m c\u1ee7a “nghi\u00ean c\u1ee9u to\u00e0n di\u1ec7n v\u00e0 t\u1ed5ng h\u1ee3p”. H\u01b0\u1edbng ti\u1ebfp c\u1eadn n\u00e0y s\u1ebd kh\u00f4ng ch\u1ec9 t\u00ednh \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 th\u00ed nghi\u1ec7m mang t\u00ednh “c\u1ea1nh tranh l\u00fd t\u00ednh” nh\u01b0 l\u00e0 dinh d\u01b0\u1ee1ng, \u00e1nh s\u00e1ng, kh\u00f4ng gian sinh tr\u01b0\u1edfng… m\u00e0 c\u00f2n ph\u1ea3i t\u00ednh c\u1ea3 \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 “\u1ea3nh h\u01b0\u1edfng t\u01b0\u01a1ng t\u00e1c c\u1ea1nhtranh ho\u00e1 h\u1ecdc–<\/em>Allelopathic effects“. <\/em>Nghi\u00ean c\u1ee9u “\u1ea3nh h\u01b0\u1edfng t\u01b0\u01a1ng t\u00e1c” c\u1ee7a c\u00e2y Keo lai v\u00e0 Keo l\u00e1 tr\u00e0m t\u1edbi c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba l\u00e1 r\u1ed9ng s\u1ebd t\u1ea1o c\u01a1 s\u1edf khoa h\u1ecdc v\u00e0 th\u1ef1c ti\u1ec5n cho ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn & \u0111\u1ec1 xu\u1ea5t bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng h\u1ed7n giao c\u00e2y keo ph\u00f9 tr\u1ee3 v\u1edbi c\u00e1c c\u00e2y b\u1ea3n \u0111\u1ecba l\u00e1 r\u1ed9ng v\u00e0 chuy\u1ec3n h\u00f3a c\u00e1c r\u1eebng tr\u1ed3ng keo thu\u1ea7n lo\u00e0i th\u00e0nh r\u1eebng h\u1ed7n giao b\u1ec1n v\u1eefng. \u0110\u1ec1 t\u00e0i “Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd sinh th\u00e1i m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba l\u00e0m c\u01a1 s\u1edf cho vi\u1ec7c g\u00e2y tr\u1ed3ng r\u1eebng” \u0111\u00e3 ti\u1ebfn h\u00e0nh b\u1ed1 tr\u00ed th\u00ed nghi\u1ec7m, \u0111\u00e1nh gi\u00e1 \u1ea3nh h\u01b0\u1edfng t\u01b0\u01a1ng t\u00e1c h\u00f3a h\u1ecdc (allelopathy) c\u1ee7a Keo lai \u0111\u1ebfn s\u1ef1 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t Kh\u00e1o v\u00e0ng, D\u1ebb \u0111\u1ecf v\u00e0 Gi\u00e1ng h\u01b0\u01a1ng trong ph\u00f2ng th\u00ed nghi\u1ec7m. <\/p>\n

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

\n \n<\/p>\n

\nK\u1ebft qu\u1ea3 nghiên c\u1ee9u cho th\u1ea5y trong 3 lo\u1ea1i d\u1ecbch chi\u1ebft t\u1eeb lá, r\u1ec5 và th\u1ea3m m\u1ee5c cây Keo lai thì d\u1ecbch chi\u1ebft t\u1eeb lá có \u1ea3nh h\u01b0\u1edfng m\u1ea1nh nh\u1ea5t t\u1edbi t\u1ef7 l\u1ec7 và t\u1ed1c \u0111\u1ed9 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t Kháo vàng, Giáng h\u01b0\u01a1ng và D\u1ebb \u0111\u1ecf. D\u1ecbch chi\u1ebft lá Keo lai \u1edf \u0111\u1ed9 \u0111\u1eadm \u0111\u1eb7c 30% \u0111ã làm gi\u1ea3m t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m h\u1ea1t Kháo vàng xu\u1ed1ng 30,0% và h\u1ea1t Giáng h\u01b0\u01a1ng xu\u1ed1ng 27,7% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng; \u0111\u1ed1i v\u1edbi h\u1ea1t D\u1ebb \u0111\u1ecf, \u1edf công th\u1ee9c x\u1eed lý d\u1ecbch chi\u1ebft lá Keo lai \u0111\u1eadm \u0111\u1eb7c 20% và 30% \u0111ã \u1ea3nh h\u01b0\u1edfng làm gi\u1ea3m t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m xu\u1ed1ng 24,7% và 28,7% so v\u1edbi \u0111\u1ed1i ch\u1ee9ng (p=0,95). D\u1ecbch chi\u1ebft t\u1eeb r\u1ec5 ch\u1ec9 \u1ea3nh h\u01b0\u1edfng t\u1edbi n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t Giáng h\u01b0\u01a1ng \u1edf \u0111\u1ed9 \u0111\u1eadm \u0111\u1eb7c 30% (gi\u1ea3m 16,4%) và h\u1ea1t D\u1ebb \u0111\u1ecf \u1edf \u0111\u1ed9 \u0111\u1eadm \u0111\u1eb7c 20% & 30% (gi\u1ea3m 22,7 & 27,4% t\u01b0\u01a1ng \u1ee9ng so \u0111\u1ed1i ch\u1ee9ng). D\u1ecbch chi\u1ebft t\u1eeb th\u1ea3m m\u1ee5c Keo lai không \u1ea3nh h\u01b0\u1edfng t\u1edbi t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u1ee7a các lo\u1ea1i h\u1ea1t. T\u01b0\u01a1ng t\u1ef1 nh\u01b0 \u0111\u1ed1i v\u1edbi t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m, d\u1ecbch chi\u1ebft t\u1eeb lá Keo lai có \u1ea3nh h\u01b0\u1edfng rõ r\u1ec7t nh\u1ea5t t\u1edbi t\u1ed1c \u0111\u1ed9 n\u1ea3y m\u1ea7m c\u1ee7a các lo\u1ea1i h\u1ea1t nghiên c\u1ee9u, trong \u0111ó, h\u1ea1t D\u1ebb \u0111\u1ecf b\u1ecb \u1ea3nh h\u01b0\u1edfng làm gi\u1ea3m t\u1ed1c \u0111\u1ed9 n\u1ea3y m\u1ea7m so v\u1edbi \u0111\u1ed1i ch\u1ee9ng nhi\u1ec1u nh\u1ea5t (p=0,95). <\/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\/9089"}],"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=9089"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9089\/revisions"}],"predecessor-version":[{"id":10543,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9089\/revisions\/10543"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9089"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9089"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9089"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}