{"id":9697,"date":"2012-01-17T02:30:49","date_gmt":"2012-01-16T19:30:49","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2012\/01\/nghien-cuu-xac-dinh-kha-nang-nhan-giong-hoang-lien-o-ro-mahonia-nepalensis-dc-bang-phuong-phap-giam-hom\/"},"modified":"2015-05-19T14:19:04","modified_gmt":"2015-05-19T07:19:04","slug":"nghien-cuu-xac-dinh-kha-nang-nhan-giong-hoang-lien-o-ro-mahonia-nepalensis-dc-bang-phuong-phap-giam-hom","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/nghien-cuu-xac-dinh-kha-nang-nhan-giong-hoang-lien-o-ro-mahonia-nepalensis-dc-bang-phuong-phap-giam-hom\/","title":{"rendered":"Nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng nh\u00e2n gi\u1ed1ng Ho\u00e0ng li\u00ean \u00f4 r\u00f4 (Mahonia nepalensis Dc.) b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom"},"content":{"rendered":"

Nguy\u1ec5n Thanh Nguy\u00ean, Nguy\u1ec5n Cao Xu\u00e2n Vi\u00ean<\/strong><\/p>\n

Trung t\u00e2m NCTN L\u00e2m sinh L\u00e2m \u0110\u1ed3ng – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/em><\/p>\n

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

S\u1eed d\u1ee5ng IAA, IBA v\u00e0 NAA v\u1edbi c\u00e1c n\u1ed3ng \u0111\u1ed9 0,5%, 1%, 1,5%, 2%, 2,5% \u1edf d\u1ea1ng b\u1ed9t trong th\u00ed nghi\u1ec7m nh\u00e2n gi\u1ed1ng hom Ho\u00e0ng li\u00ean \u00f4 r\u00f4 ti\u1ebfn h\u00e0nh \u1edf 2 th\u1eddi v\u1ee5 kh\u00e1c nhau (m\u00f9a kh\u00f4 v\u00e0 m\u00f9a m\u01b0a) t\u1ea1i \u0110\u00e0 L\u1ea1t cho th\u1ea5y NAA l\u00e0 ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng c\u00f3 t\u00e1c \u0111\u1ed9ng t\u1ed1t nh\u1ea5t \u0111\u1ebfn kh\u1ea3 n\u0103ng ra r\u1ec5 v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng r\u1ec5 c\u1ee7a hom gi\u00e2m l\u00e0 ch\u1ed3i ng\u1ecdn d\u1ea1ng b\u00e1nh t\u1ebb l\u1ea5y t\u1eeb v\u01b0\u1eddn v\u1eadt li\u1ec7u 2-3 tu\u1ed5i. Th\u1eddi gian v\u00e0 t\u1ef7 l\u1ec7 ra r\u1ec5 c\u0169ng nh\u01b0 ch\u1ea5t l\u01b0\u1ee3ng b\u1ed9 r\u1ec5 c\u1ee7a hom gi\u00e2m \u1edf th\u1eddi v\u1ee5 kh\u00e1c nhau c\u00f3 s\u1ef1 sai kh\u00e1c nhau c\u01a1 b\u1ea3n. V\u1edbi NAA n\u1ed3ng \u0111\u1ed9 1,5%, t\u1ef7 l\u1ec7 ra r\u1ec5 cao nh\u1ea5t \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u00e0 45% sau th\u1eddi gian 90 ng\u00e0y. Th\u1eddi gian ra r\u1ec5 c\u1ee7a hom gi\u00e2m \u1edf m\u00f9a m\u01b0a ch\u1ec9 sau 60 ng\u00e0y v\u00e0 t\u1ef7 l\u1ec7 ra r\u1ec5 c\u0169ng cao h\u01a1n (60%) v\u1edbi n\u1ed3ng \u0111\u1ed9 NAA th\u00edch h\u1ee3p l\u00e0 0,5%.<\/p>\n

T\u1eeb kho\u00e1: <\/strong>Gi\u00e2m hom, Ho\u00e0ng li\u00ean \u00f4 r\u00f4, t\u1ef7 l\u1ec7 ra r\u1ec5<\/p>\n

\u0110\u1eb6T V\u1ea4N \u0110\u1ec0<\/strong><\/p>\n

C\u00e2y Ho\u00e0ng li\u00ean \u00f4 r\u00f4 hay c\u00f2n g\u1ecdi l\u00e0 c\u00e2y M\u1eadt g\u1ea5u (Mahonia nepalensis <\/em>DC.) \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nh\u01b0 l\u00e0 m\u1ed9t lo\u00e0i c\u00e2y d\u01b0\u1ee3c li\u1ec7u qu\u00ed, c\u00f3 ph\u00e2n b\u1ed1 h\u1eb9p v\u00e0 ch\u1ec9 c\u00f2n l\u1ea1i r\u1ea5t \u00edt c\u00e1 th\u1ec3m\u1ecdc r\u1ea3i r\u00e1c tr\u00ean c\u00e1c v\u00f9ng n\u00fai c\u00f3 \u0111\u1ed9 cao t\u1eeb 1.500 \u2013 1.700m nh\u01b0 Lang Biang (L\u00e2m \u0110\u1ed3ng), T\u1ea3 Gi\u00e0ng Ph\u00ecnh v\u00e0 B\u1ea3n Khoang (Sa Pa \u2013 L\u00e0o Cai), M\u00f9a S\u00faa (\u0110\u1ed3ng V\u0103n \u2013 H\u00e0 Giang) (Nguy\u1ec5n T\u1eadp, 2007). Ho\u00e0ng Li\u00ean \u00f4 r\u00f4 c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng V trong S\u00e1ch \u0111\u1ecf Vi\u1ec7t Nam (1996) v\u00e0 x\u1ebfp h\u1ea1ng EN.A2c,d trong Danh l\u1ee5c \u0110\u1ecf c\u00e2y thu\u1ed1c Vi\u1ec7t Nam (2006). \u0110\u00e2y l\u00e0 lo\u00e0i c\u00e2y d\u1ea1ng b\u1ee5i cao \u0111\u1ebfn 4m, th\u00e2n, c\u00e0nh v\u00e0 r\u1ec5 c\u00f3 ch\u1ee9a h\u00e0m l\u01b0\u1ee3ng Berberin cao, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1eefa \u0111au b\u1ee5ng, r\u1ed1i lo\u1ea1n ti\u00eau ho\u00e1, \u1ec9a ch\u1ea3y, ki\u1ebft l\u1ef5; v\u00e0 theo kinh nghi\u1ec7m c\u1ee7a ng\u01b0\u1eddi d\u00e2n \u1edf Sa Pa lo\u00e0i c\u00e2y n\u00e0y c\u00f2n \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m thu\u1ed1c b\u1ed5 \u0111\u1eafng c\u00f3 t\u00e1c d\u1ee5ng ch\u1eefa x\u01b0\u01a1ng kh\u1edbp (Nguy\u1ec5n T\u1eadp, 2007). Hi\u1ec7n nay, ngu\u1ed3n Berberin t\u1eeb lo\u00e0i V\u00e0ng \u0111\u1eafng (Coscinium fenestratum<\/em> Colebr.) h\u1ea7u nh\u01b0 c\u1ea1n ki\u1ec7t, n\u00ean Ho\u00e0ng li\u00ean \u00f4 r\u00f4 \u0111ang tr\u1edf th\u00e0nh ngu\u1ed3n nguy\u00ean li\u1ec7u thay th\u1ebf quan tr\u1ecdng \u0111\u1ec3 s\u1ea3n xu\u1ea5t Berberin.<\/p>\n

Theo k\u1ebft qu\u1ea3 \u0111i\u1ec1u tra s\u01a1 b\u1ed9 \u1edf L\u00e2m \u0110\u1ed3ng Ho\u00e0ng li\u00ean \u00f4 r\u00f4 hi\u1ec7n ch\u1ec9 c\u00f3 ph\u00e2n b\u1ed1 r\u1ea3i r\u00e1c v\u1edbi s\u1ed1 l\u01b0\u1ee3ng r\u1ea5t \u00edt d\u01b0\u1edbi t\u00e1n c\u00e1c r\u1eebng th\u00f4ng tr\u00ean d\u00e3y n\u00fai Lang Biang. H\u1ea1t c\u1ee7a lo\u00e0i n\u00e0y th\u01b0\u1eddng c\u00f3 t\u1ef7 l\u1ec7 h\u1ea1t l\u00e9p cao n\u00ean t\u1ef7 l\u1ec7 n\u1ea9y m\u1ea7m c\u1ee7a c\u00e1c l\u00f4 h\u1ea1t thu h\u00e1i \u0111\u01b0\u1ee3c l\u00e0 r\u1ea5t th\u1ea5p v\u00e0 s\u1ed1 l\u01b0\u1ee3ng c\u00e2y t\u00e1i sinh trong t\u1ef1 nhi\u00ean c\u0169ng r\u1ea5t h\u1ea1n ch\u1ebf. V\u00ec v\u1eady, vi\u1ec7c nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u00e2n gi\u1ed1ng b\u1eb1ng hom l\u00e0 h\u1ebft s\u1ee9c c\u1ea7n thi\u1ebft nh\u1eb1m t\u1eebng b\u01b0\u1edbc \u0111\u00e1p \u1ee9ng nhu c\u1ea7u v\u1ec1 gi\u1ed1ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao ph\u1ee5c v\u1ee5 cho vi\u1ec7c g\u00e2y tr\u1ed3ng v\u00e0 ph\u00e1t tri\u1ec3n.<\/p>\n

Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, vi\u1ec7c nghi\u00ean c\u1ee9u gi\u00e2m hom \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nhi\u1ec1u v\u00e0 th\u00e0nh c\u00f4ng tr\u00ean c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c nhau nh\u01b0 P\u01a1 mu(Fokienia hodgisii<\/em>),<\/em>B\u00e1ch xanh(Calocedrus macrolepis<\/em>), Th\u00f4ng \u0111\u1ecf (Taxus wallichiana<\/em>) (Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a, 2001); H\u1ed3ng t\u00f9ng (Dacrydium elatum<\/em>) (Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a v\u00e0 Tr\u1ea7n V\u0103n Ti\u1ebfn, 2002, 2004), … Ri\u00eang \u0111\u1ed1i v\u1edbi c\u00e2y Ho\u00e0ng li\u00ean \u00f4 r\u00f4, cho \u0111\u1ebfn nay c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 k\u1ef9 thu\u1eadt gi\u00e2m hom v\u1eabn c\u00f2n h\u1ea1n ch\u1ebf.<\/p>\n

\u0110\u1ec3 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c ph\u01b0\u01a1ng th\u1ee9c nh\u00e2n gi\u1ed1ng th\u00edch h\u1ee3p cho lo\u00e0i c\u00e2y n\u00e0y b\u1eb1ng k\u1ef9 thu\u1eadt gi\u00e2m c\u00e0nh, m\u1ed9t s\u1ed1 nh\u00e2n t\u1ed1 c\u00f3 vai tr\u00f2 h\u1ebft s\u1ee9c quan tr\u1ecdng \u0111\u1ebfn s\u1ef1 ra r\u1ec5 c\u1ee7a hom gi\u00e2m bao g\u1ed3m lo\u1ea1i ch\u1ea5t \u0111i\u1ec1u h\u00f2a sinh tr\u01b0\u1edfng v\u00e0 n\u1ed3ng \u0111\u1ed9 c\u0169ng nh\u01b0 th\u1eddi v\u1ee5 gi\u00e2m hom l\u00e0 nh\u1eefng n\u1ed9i dung ch\u00ednh \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong khu\u00f4n kh\u1ed5 c\u1ee7a nghi\u00ean c\u1ee9u n\u00e0y.<\/p>\n","protected":false},"excerpt":{"rendered":"

\nS\u1eed d\u1ee5ng IAA, IBA và NAA v\u1edbi các n\u1ed3ng \u0111\u1ed9 0,5%, 1%, 1,5%, 2%, 2,5% \u1edf d\u1ea1ng b\u1ed9t trong thí nghi\u1ec7m nhân gi\u1ed1ng hom Hoàng liên ô rô ti\u1ebfn hành \u1edf 2 th\u1eddi v\u1ee5 khác nhau (mùa khô và mùa m\u01b0a) t\u1ea1i \u0110à L\u1ea1t cho th\u1ea5y NAA là ch\u1ea5t \u0111i\u1ec1u hòa sinh tr\u01b0\u1edfng có tác \u0111\u1ed9ng t\u1ed1t nh\u1ea5t \u0111\u1ebfn kh\u1ea3 n\u0103ng ra r\u1ec5 và ch\u1ea5t l\u01b0\u1ee3ng r\u1ec5 c\u1ee7a hom giâm là ch\u1ed3i ng\u1ecdn d\u1ea1ng bánh t\u1ebb l\u1ea5y t\u1eeb v\u01b0\u1eddn v\u1eadt li\u1ec7u 2-3 tu\u1ed5i. Th\u1eddi gian và t\u1ef7 l\u1ec7 ra r\u1ec5 c\u0169ng nh\u01b0 ch\u1ea5t l\u01b0\u1ee3ng b\u1ed9 r\u1ec5 c\u1ee7a hom giâm \u1edf th\u1eddi v\u1ee5 khác nhau có s\u1ef1 sai khác nhau c\u01a1 b\u1ea3n. V\u1edbi NAA n\u1ed3ng \u0111\u1ed9 1,5%, t\u1ef7 l\u1ec7 ra r\u1ec5 cao nh\u1ea5t \u0111\u1ea1t \u0111\u01b0\u1ee3c là 45% sau th\u1eddi gian 90 ngày. Th\u1eddi gian ra r\u1ec5 c\u1ee7a hom giâm \u1edf mùa m\u01b0a ch\u1ec9 sau 60 ngày và t\u1ef7 l\u1ec7 ra r\u1ec5 c\u0169ng cao h\u01a1n (60%) v\u1edbi n\u1ed3ng \u0111\u1ed9 NAA thích h\u1ee3p là 0,5%. <\/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\/9697"}],"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=9697"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9697\/revisions"}],"predecessor-version":[{"id":15245,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9697\/revisions\/15245"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9697"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9697"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9697"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}