{"id":2096,"date":"2023-01-26T21:57:57","date_gmt":"2023-01-26T14:57:57","guid":{"rendered":"https:\/\/adiagri.com\/?p=2096"},"modified":"2023-01-26T22:09:34","modified_gmt":"2023-01-26T15:09:34","slug":"auxin-la-gi-iaa-naa-iba-24d-cong-dung-va-cach-su-dung","status":"publish","type":"post","link":"https:\/\/adiagri.com\/en\/auxin-la-gi-iaa-naa-iba-24d-cong-dung-va-cach-su-dung\/","title":{"rendered":"Auxin l\u00e0 g\u00ec? IAA, NAA, IBA ,2,4D c\u00f4ng d\u1ee5ng v\u00e0 c\u00e1ch s\u1eef d\u1ee5ng"},"content":{"rendered":"\n\n\n

\u00a0\u00a0\u00a01. Auxin l\u00e0 g\u00ec?<\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u2013 Auxine ti\u1ebfng Hy l\u1ea1p c\u00f3 ngh\u0129a l\u00e0 sinh tr\u01b0\u1edfng.<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u2013\u00a0Auxin\u00a0l\u00e0 m\u1ed9t\u00a0hormon th\u1ef1c v\u1eadt\u00a0c\u00f3 t\u00e1c d\u1ee5ng t\u1ed1t \u0111\u1ebfn c\u00e1c qu\u00e1 tr\u00ecnh sinh tr\u01b0\u1edfng c\u1ee7a t\u1ebf b\u00e0o, ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u1ea7ng ph\u00e1t sinh, s\u1ef1 h\u00ecnh th\u00e0nh r\u1ec5, hi\u1ec7n t\u01b0\u1ee3ng \u01b0u th\u1ebf ng\u1ecdn, t\u00ednh h\u01b0\u1edbng c\u1ee7a th\u1ef1c v\u1eadt, s\u1ef1 sinh tr\u01b0\u1edfng c\u1ee7a qu\u1ea3 v\u00e0 t\u1ea1o ra qu\u1ea3 kh\u00f4ng h\u1ea1t\u2026<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u2013 Auxin k\u00edch th\u00edch s\u1ef1 sinh tr\u01b0\u1edfng gi\u00e3n c\u1ee7a t\u1ebf b\u00e0o. Nh\u01b0ng n\u1ebfu k\u00edch th\u00edch v\u1edbi h\u00e0m l\u01b0\u1ee3ng qu\u00e1 cao, t\u00e1c d\u1ee5ng qu\u00e1 m\u1ea1nh s\u1ebd x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng \u1ee9c ch\u1ebf ng\u01b0\u1ee3c tr\u1edf l\u1ea1i, l\u00fac n\u00e0y auxin s\u1ebd tr\u1edf th\u00e0nh ch\u1ea5t \u1ee9c ch\u1ebf.<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a02. C\u00f4ng th\u1ee9c c\u1ea5u t\u1ea1o Auxin<\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u2013 Auxin l\u00e0 nh\u1eefng h\u1ee3p ch\u1ea5t c\u00f3 nh\u00e2n indol, \u0111\u01b0\u1ee3c t\u1ed5ng h\u1ee3p t\u1eeb tryptophan trong m\u00f4 ph\u00e2n sinh (ng\u1ecdn, l\u00f3ng) v\u00e0 l\u00e1 non. Sau \u0111\u00f3, auxin s\u1ebd di chuy\u1ec3n \u0111\u1ebfn r\u1ec5 v\u00e0 t\u00edch t\u1ee5 trong r\u1ec5.<\/p>\n

<\/p>\n

\u00a0\u2013 C\u00f3 nhi\u1ec1u lo\u1ea1i auxin kh\u00e1c nhau v\u1edbi c\u1ea5u tr\u00fac h\u00f3a h\u1ecdc kh\u00e1c nhau. Lo\u1ea1i auxin quan tr\u1ecdng nh\u1ea5t l\u00e0 \u03b2-indol-acetic acid (IAA), ngo\u00e0i ra m\u1ed9t s\u1ed1 auxin kh\u00e1c c\u0169ng kh\u00e1 ph\u1ed5 bi\u1ebfn l\u00e0 napthalen-acetic acid (NAA), phenyl-acetic acid (PAA)<\/p>\n

<\/p>\n

\u00a0 \u00a03. Vai tr\u00f2 sinh l\u00fd c\u1ee7a Auxin:<\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u2013 Auxin l\u00e0m k\u00e9o d\u00e0i t\u1ebf b\u00e0o:<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Khi t\u1ebf b\u00e0o \u0111\u01b0\u1ee3c cung c\u1ea5p auxin, auxin s\u1ebd ho\u1ea1t h\u00f3a b\u01a1m ion H+ tr\u00ean m\u00e0ng sinh ch\u1ea5t. Ion H+ \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n t\u00edch c\u1ef1c t\u1eeb t\u1ebf b\u00e0o ch\u1ea5t v\u00e0o trong v\u00e1ch.\u00a0 S\u1ef1 gia t\u0103ng \u0111\u00f3 l\u00e0m ho\u1ea1t h\u00f3a enzim gi\u00fap b\u1ebb g\u1ea3y m\u1ed9t s\u1ed1 li\u00ean k\u1ebft ch\u00e9o gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng \u0111a c\u1ea5u t\u1ea1o v\u00e1ch v\u00e0 v\u00e1ch tr\u1edf n\u00ean m\u1ec1m d\u1ebbo h\u01a1n. V\u00ec v\u1eady, n\u01b0\u1edbc v\u00e0o t\u1ebf b\u00e0o v\u00e0 kh\u00f4ng b\u00e0o c\u00e0ng l\u00fac c\u00e0ng nhi\u1ec1u v\u00e1ch s\u1ebd b\u1ecb c\u0103ng ra.<\/p>\n

\"\"<\/p>\n

\u00a0\u2013 T\u00ednh h\u01b0\u1edbng quang c\u1ee7a Auxin:\u00a0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Khi \u00e1nh s\u00e1ng t\u00e1c \u0111\u1ed9ng t\u1eeb m\u1ed9t ph\u00eda ng\u1ecdn c\u00e2y, \u00e1nh s\u00e1ng l\u00e0m gi\u1ea3m s\u1ef1 cung c\u1ea5p auxin cho c\u00e2y \u1edf ph\u00eda \u00e1nh s\u00e1ng v\u00e0 t\u0103ng \u1edf ph\u00eda \u1edf trong t\u1ed1i. K\u1ebft qu\u1ea3 l\u00e0 b\u00ean ph\u00eda \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng c\u00e2y t\u0103ng tr\u01b0\u1edfng ch\u1eadm h\u01a1n ph\u00eda b\u00ean t\u1ed1i, v\u00e0 s\u1ef1 t\u0103ng tr\u01b0\u1edfng b\u1ea5t x\u1ee9ng n\u00e0y l\u00e0m cho c\u00e2y m\u1ecdc cong v\u1ec1 ph\u00eda s\u00e1ng.<\/p>\n

\"\"<\/p>\n

\u00a0\u00a0 \u00a0 \u00a0\u2013 T\u00ednh h\u01b0\u1edbng \u0111\u1ed9ng c\u1ee7a Auxin:<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 N\u1ed3ng \u0111\u1ed9 auxin \u1edf ph\u00eda d\u01b0\u1edbi c\u1ee7a th\u00e2n n\u1eb1m ngang t\u0103ng, trong khi \u1edf ph\u00eda tr\u00ean l\u1ea1i gi\u1ea3m. S\u1ef1 ph\u00e2n b\u1ed1 kh\u00f4ng \u0111\u1ec1u c\u1ee7a auxin n\u00e0y k\u00edch th\u00edch t\u1ebf b\u00e0o \u1edf ph\u00eda d\u01b0\u1edbi t\u0103ng tr\u01b0\u1edfng nhanh h\u01a1n nh\u1eefng t\u1ebf b\u00e0o \u1edf ph\u00eda tr\u00ean v\u00e0 v\u00ec th\u1ebf th\u00e2n m\u1ecdc cong l\u00ean.<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Khi \u0111\u1eb7t r\u1ec5 n\u1eb1m ngang, ph\u1ea7n t\u1ebf b\u00e0o \u1edf ph\u00eda tr\u00ean m\u1ecdc nhanh h\u01a1n nh\u1eefng t\u1ebf b\u00e0o \u1edf ph\u00eda d\u01b0\u1edbi, do \u0111\u00f3 r\u1ec5 m\u1ecdc h\u01b0\u1edbng xu\u1ed1ng.\u00a0<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\u00a0 \u00a0 \u2013 Auxin ng\u0103n c\u1ea3n s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a ch\u1ed3i b\u00ean:<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Auxin c\u00f3 \u1ea3nh h\u01b0\u1edfng ng\u0103n c\u1ea3n s\u1ef1 t\u0103ng tr\u01b0\u1edfng c\u1ee7a ch\u1ed3i b\u00ean, l\u00e0m cho ch\u00fang m\u1ecdc ch\u1eadm hay kh\u00f4ng m\u1ecdc \u0111\u01b0\u1ee3c.\u00a0<\/p>\n

\"\"<\/p>\n

\u00a0 N\u1ebfu ch\u1ed3i ng\u1ecdn \u0111\u01b0\u1ee3c c\u1eaft b\u1ecf \u0111i, m\u1ed9t s\u1ed1 ch\u1ed3i b\u00ean ph\u00eda tr\u00ean s\u1ebd t\u0103ng tr\u01b0\u1edfng t\u1ea1o ra nh\u00e1nh, khi \u0111\u00f3 ch\u1ed3i ng\u1ecdn c\u1ee7a nh\u00e1nh l\u1ea1i \u1ee9c ch\u1ebf c\u00e1c ch\u1ed3i b\u00ean d\u01b0\u1edbi nh\u00e1nh nh\u1ecf.<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u2013 Auxin k\u00edch th\u00edch s\u1ef1 ph\u00e2n chia t\u1ebf b\u00e0o th\u1ef1c v\u1eadt<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+ Auxin k\u00edch th\u00edch s\u1ef1 ph\u00e2n chia t\u1ebf b\u00e0o \u0111\u1ed1i v\u1edbi c\u00e1c t\u1ebf b\u00e0o c\u00f3 ngu\u1ed3n g\u1ed1c t\u01b0\u1ee3ng t\u1ea7ng. \u1ede n\u1ed3ng \u0111\u1ed9 cao, auxin k\u00edch th\u00edch s\u1ef1 t\u1ea1o m\u00f4 s\u1eb9o.<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\"\"<\/p>\n

Auxin \u1edf n\u1ed3ng \u0111\u1ed9 cao s\u1ebd k\u00edch th\u00edch t\u1ea1o s\u01a1 kh\u1edfi r\u1ec5, tuy nhi\u00ean, l\u1ea1i c\u00f3 t\u00e1c d\u1ee5ng ng\u0103n c\u1ea3n s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a ch\u00ednh c\u00e1c s\u01a1 kh\u1edfi r\u1ec5 n\u00e0y.<\/p>\n

\"\"<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+ C\u00e1c ch\u1ea5t c\u00f3 c\u1ea5u tr\u00fac auxin \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong gi\u00e2m c\u00e0nh (k\u00edch th\u00edch s\u1ef1 ra r\u1ec5 \u1edf c\u00e0nh gi\u00e2m), c\u1ea3n s\u1ef1 ph\u00e1t tri\u1ec3n ch\u1ed3i (m\u1eaft khoai t\u00e2y), l\u00e0m ch\u1eadm s\u1ef1 thu ho\u1ea1ch qu\u1ea3, t\u1ea1o tr\u00e1i kh\u00f4ng h\u1ea1t (cam, qu\u00fdt).<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+ Trong l\u0129nh v\u1ef1c nu\u00f4i c\u1ea5y m\u00f4 invitro, hi\u1ec7u qu\u1ea3 c\u1ee7a auxin \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong qu\u00e1 tr\u00ecnh t\u1ea1o m\u00f4 s\u1eb9o (2,4 \u2013 D), k\u00edch th\u00edch t\u1ea1o r\u1ec5 (NAA).<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0+ Auxin \u1ee9c ch\u1ebf s\u1ef1 r\u1ee5ng l\u00e1 v\u00e0 tr\u00e1i. N\u1ebfu phun auxin l\u00ean tr\u00e1i s\u1ebd gi\u1eef \u0111\u01b0\u1ee3c tr\u00e1i tr\u00ean c\u00e2y \u0111\u1ebfn l\u00fac mu\u1ed1n thu ho\u1ea1ch.<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0 \u00a0 \u00a0 4. H\u00e0m l\u01b0\u1ee3ng Auxin trong c\u00e2y tr\u1ed3ng<\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u2013 C\u00e1c c\u01a1 quan kh\u00e1c nhau c\u00f3 h\u00e0m l\u01b0\u1ee3ng auxin kh\u00e1c nhau. H\u00e0m l\u01b0\u1ee3ng n\u00e0y c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o tu\u1ed5i c\u00e2y, v\u00e0o \u0111i\u1ec1u ki\u1ec7n ngo\u1ea1i c\u1ea3nh. C\u00e1c c\u01a1 quan c\u00f2n non \u0111ang sinh tr\u01b0\u1edfng c\u00f3 h\u00e0m l\u01b0\u1ee3ng auxin cao h\u01a1n c\u00e1c c\u01a1 quan tr\u01b0\u1edfng th\u00e0nh v\u00e0 c\u01a1 quan gi\u00e0. Tuy nhi\u00ean, ph\u1ea3n \u1ee9ng sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c c\u01a1 quan kh\u00e1c nhau ph\u1ee5 thu\u1ed9c v\u00e0o h\u00e0m l\u01b0\u1ee3ng auxin l\u00e0 r\u1ea5t kh\u00e1c nhau. N\u00f3i chung th\u00e2n c\u00e2y c\u1ea3m \u1ee9ng k\u00edch th\u00edch v\u1edbi n\u1ed3ng \u0111\u1ed9 auxin cao h\u01a1n ch\u1ed3i v\u00e0 r\u1ec5. \u00a0<\/p>\n

\"\"<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u0110\u1ed3 th\u1ecb minh h\u1ecd\u1ea1 m\u1ed1i quan h\u1ec7 gi\u1eefa n\u1ed3ng \u0111\u1ed9 auxin v\u00e0 s\u1ef1 sinh tr\u01b0\u1edfng<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\u00a05. C\u00e1c Auxin \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u trong n\u00f4ng nghi\u1ec7p<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
T\u00ean ch\u1ea5t<\/td>\nVi\u1ebft t\u1eaft<\/td>\nTr\u1ecdng l\u01b0\u1ee3ng\n

\u00a0ph\u00e2n t\u1eed<\/p>\n<\/td>\n

Dung m\u00f4i<\/td>\nNhi\u1ec7t \u0111\u1ed9 b\u1ea3o qu\u1ea3n<\/td>\n<\/tr>\n
D\u1ea1ng b\u1ed9t<\/td>\nD\u1ea1ng l\u1ecfng<\/td>\n<\/tr>\n
3-Indoleacetic acid<\/td>\nIAA<\/td>\n175.2<\/td>\n1N NaOH<\/td>\n0o<\/sup>C<\/td>\n0o<\/sup>C<\/td>\n<\/tr>\n
3-Indolebutyric acid<\/td>\nIBA<\/td>\n203.2<\/td>\n1N NaOH<\/td>\n2-8o<\/sup>C<\/td>\n0o<\/sup>C<\/td>\n<\/tr>\n
\u03b1-Naphthaleneacetic acid<\/td>\nNAA<\/td>\n186.2<\/td>\n1N NaOH<\/td>\n\u2013<\/td>\n2-8o<\/sup>C<\/td>\n<\/tr>\n
2,4-Dichlorophenoxyacetic acid<\/td>\n2,4-D<\/td>\n221.0<\/td>\nWater<\/td>\n\u2013<\/td>\n2-8o<\/sup>C<\/td>\n<\/tr>\n
2,4,5-Trichlorophenoxyacetic acid<\/td>\n2,4,5-T<\/td>\n255.5<\/td>\nEtOH<\/td>\n\u2013<\/td>\n2-8o<\/sup>C<\/td>\n<\/tr>\n
p-Chlorophenoxyacetic acid<\/td>\n4-CPA<\/td>\n158.1<\/td>\nEtOH<\/td>\n\u2013<\/td>\n2-8o<\/sup>C<\/td>\n<\/tr>\n
2-Methyl-4-chlorophenoxyacetic acid<\/td>\nMPCA<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
\u03b2-Naphthyloxyacetic acid<\/td>\nNOA<\/td>\n202.2<\/td>\n1N NaOH<\/td>\n\u2013<\/td>\n2-8o<\/sup>C<\/td>\n<\/tr>\n
3,6-Dichloro-2-methoxybenzoic acid<\/td>\nDicamba<\/td>\n186.6<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
4-Amino-3,5,6-trichloropicolinic acid<\/td>\nPicloram<\/td>\n241.5<\/td>\nDMSO<\/td>\n\u2013<\/td>\n2-8o<\/sup>C<\/td>\n<\/tr>\n
Phenylacetic acid<\/td>\nPAA<\/td>\n136.2<\/td>\nEtOH<\/td>\n\u2013<\/td>\n2-8o<\/sup>C<\/td>\n<\/tr>\n
2,3,5-Triiodobenzoic acid<\/td>\nTIBA<\/td>\n499.8<\/td>\n1N NaOH<\/td>\n0o<\/sup>C<\/td>\n0o<\/sup>C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\u00a0 \u00a06. \u1ee8ng d\u1ee5ng c\u00e1c h\u1ee3p ch\u1ea5t Auxin trong tr\u1ed3ng tr\u1ecdt.<\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\u1ee8ng d\u1ee5ng auxin t\u0103ng \u0111\u1eadu qu\u1ea3, sinh tr\u01b0\u1edfng c\u1ee7a qu\u1ea3 v\u00e0 t\u1ea1o qu\u1ea3 kh\u00f4ng h\u1ea1t<\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u2013 Qu\u1ea3 ch\u1ec9 \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh sau khi c\u00f3 qu\u00e1 tr\u00ecnh th\u1ee5 tinh x\u1ea3y ra, c\u00f2n n\u1ebfu kh\u00f4ng th\u1ee5 tinh th\u00ec hoa s\u1ebd b\u1ecb r\u1ee5ng. \u0110i\u1ec1u \u0111\u00f3 \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch r\u1eb1ng ph\u00f4i h\u1ea1t l\u00e0 ngu\u1ed3n t\u1ed5ng h\u1ee3p n\u00ean c\u00e1c ch\u1ea5t k\u00edch th\u00edch sinh tr\u01b0\u1edfng trong \u0111\u00f3 c\u00f3 auxin. C\u00e1c ch\u1ea5t n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n v\u00e0o m\u00f4 c\u1ee7a b\u1ea7u \u0111\u1ec3 k\u00edch th\u00edch b\u1ea7u l\u1edbn l\u00ean th\u00e0nh qu\u1ea3. V\u00ec v\u1eady, h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc c\u1ee7a qu\u1ea3 ho\u00e0n to\u00e0n ph\u1ee5 thu\u1ed9c v\u00e0o h\u00e0m l\u01b0\u1ee3ng c\u00e1c ch\u1ea5t n\u1ed9i sinh t\u1eeb ph\u00f4i h\u1ea1t. Ch\u00ednh v\u00ec l\u00fd do \u0111\u00f3 m\u00e0 ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng auxin v\u00e0 gibberellin ngo\u1ea1i sinh \u0111\u1ec3 thay th\u1ebf cho ngu\u1ed3n n\u1ed9i sinh.<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u2013 N\u1ebfu ch\u00fang ta x\u1eed l\u00fd cho hoa ch\u01b0a x\u1ea3y ra th\u1ee5 tinh th\u00ec auxin ngo\u1ea1i sinh s\u1ebd khuy\u1ebfch t\u00e1n v\u00e0o b\u1ea7u v\u00e0 k\u00edch th\u00edch s\u1ef1 l\u1edbn l\u00ean c\u1ee7a b\u1ea7u th\u00e0nh qu\u1ea3 m\u00e0 kh\u00f4ng qua qu\u00e1 tr\u00ecnh th\u1ee5 tinh. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, qu\u1ea3 t\u1ea1o n\u00ean kh\u00f4ng qua th\u1ee5 tinh v\u00e0 do \u0111\u00f3 s\u1ebd kh\u00f4ng c\u00f3 h\u1ea1t.<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u2013 M\u1ed9t s\u1ed1 c\u00e2y tr\u1ed3ng nh\u01b0 c\u00e0 chua, b\u1ea7u b\u00ed, cam chanh,\u2026ng\u01b0\u1eddi ta th\u01b0\u1eddng x\u1eed l\u00fd auxin d\u01b0\u1edbi d\u1ea1ng \u03b1 -NAA (10 \u2013 20 ppm); 2,4D (5 -10 ppm). C\u00f2n c\u00e1c c\u00e2y tr\u1ed3ng kh\u00e1c nh\u01b0 nho, anh \u0111\u00e0o,\u2026. th\u00ec x\u1eed l\u00fd gibberellin (20 \u2013 50 ppm) l\u1ea1i c\u00f3 hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0Ph\u00f2ng ng\u1eeba r\u1ee5ng qu\u1ea3:<\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u2013 S\u1ef1 r\u1ee5ng l\u00e0 do s\u1ef1 h\u00ecnh th\u00e0nh t\u1ea7ng r\u1eddi \u1edf cu\u1ed1ng l\u00e1, cu\u1ed1ng qu\u1ea3. Auxin l\u00e0 ch\u1ea5t k\u00ecm h\u00e3m s\u1ef1 r\u1ee5ng. Ch\u00ednh v\u00ec v\u1eady m\u00e0 ng\u01b0\u1eddi ta x\u1eed l\u00fd auxin cho c\u00e2y v\u00e0 cho qu\u1ea3 non c\u00f3 th\u1ec3 k\u00ecm h\u00e3m s\u1ef1 r\u1ee5ng c\u1ee7a ch\u00fang. V\u00ed d\u1ee5 nh\u01b0 phun \u03b1-NAA (10 \u2013 20 ppm) cho l\u00e1 ho\u1eb7c qu\u1ea3 non c\u00f3 th\u1ec3 k\u00e9o d\u00e0i th\u1eddi gian t\u1ed3n t\u1ea1i c\u1ee7a ch\u00fang tr\u00ean c\u00e2y.<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0K\u00e9o d\u00e0i s\u1ef1 ch\u00edn c\u1ee7a qu\u1ea3<\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u2013 S\u1ef1 ch\u00edn c\u1ee7a qu\u1ea3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1eb1ng t\u1ef7 l\u1ec7 auxin\/ethylene. Mu\u1ed1n k\u00ecm h\u00e3m s\u1ef1 ch\u00edn ta c\u1ea7n t\u0103ng h\u00e0m l\u01b0\u1ee3ng auxin trong m\u00f4 qu\u1ea3. Phun dung d\u1ecbch auxin l\u00ean qu\u1ea3 xanh ho\u1eb7c qu\u1ea3 s\u1eafp ch\u00edn \u0111ang \u1edf tr\u00ean c\u00e2y c\u00f3 th\u1ec3 k\u00e9o d\u00e0i th\u1eddi gian t\u1ed3n t\u1ea1i c\u1ee7a qu\u1ea3. Tr\u01b0\u1edbc \u0111\u00e2y ng\u01b0\u1eddi ta hay s\u1eed d\u1ee5ng 2,4D (10 -15 ppm). Hi\u1ec7n nay ng\u01b0\u1eddi ta s\u1eed d\u1ee5ng \u03b1-NAA(10 \u2013 20 ppm) c\u0169ng c\u00f3 hi\u1ec7u qu\u1ea3 t\u1ed1t m\u00e0 kh\u00f4ng \u0111\u1ed9c h\u1ea1i.\u00a0<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\u00a0 Di\u1ec7t tr\u1eeb c\u1ecf d\u1ea1i<\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u2013 Khi s\u1eed d\u1ee5ng n\u1ed3ng \u0111\u1ed9 cao c\u00f3 t\u00e1c d\u1ee5ng di\u1ec7t tr\u1eeb c\u1ecf d\u1ea1i h\u1ea1i c\u00e2y tr\u1ed3ng. C\u00e1c ch\u1ea5t nh\u01b0 2,4D; 2,4,5T tr\u01b0\u1edbc \u0111\u00e2y \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u \u0111\u1ec3 di\u1ec7t tr\u1eeb c\u1ecf d\u1ea1i, nh\u01b0ng ng\u00e0y nay ng\u01b0\u1eddi ta \u0111\u00e3 t\u1ea1o ra r\u1ea5t nhi\u1ec1u ch\u1ea5t di\u1ec7t c\u1ecf m\u1edbi c\u00f3 hi\u1ec7u qu\u1ea3 cao m\u00e0 kh\u00f4ng \u0111\u1ed9c h\u1ea1i cho m\u00f4i tr\u01b0\u1eddng.<\/p>\n\n\n

\"Auxin<\/figure>","protected":false},"excerpt":{"rendered":"

\u00a0\u00a0\u00a01. Auxin l\u00e0 g\u00ec? \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u2013 Auxine ti\u1ebfng Hy l\u1ea1p c\u00f3 ngh\u0129a l\u00e0 sinh tr\u01b0\u1edfng. \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u2013\u00a0Auxin\u00a0l\u00e0 m\u1ed9t\u00a0hormon th\u1ef1c v\u1eadt\u00a0c\u00f3 t\u00e1c d\u1ee5ng t\u1ed1t \u0111\u1ebfn c\u00e1c qu\u00e1 tr\u00ecnh sinh tr\u01b0\u1edfng c\u1ee7a t\u1ebf b\u00e0o, ho\u1ea1t \u0111\u1ed9ng c\u1ee7a […]<\/p>\n","protected":false},"author":3,"featured_media":2103,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/adiagri.com\/en\/wp-json\/wp\/v2\/posts\/2096"}],"collection":[{"href":"https:\/\/adiagri.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/adiagri.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/adiagri.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/adiagri.com\/en\/wp-json\/wp\/v2\/comments?post=2096"}],"version-history":[{"count":7,"href":"https:\/\/adiagri.com\/en\/wp-json\/wp\/v2\/posts\/2096\/revisions"}],"predecessor-version":[{"id":2118,"href":"https:\/\/adiagri.com\/en\/wp-json\/wp\/v2\/posts\/2096\/revisions\/2118"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/adiagri.com\/en\/wp-json\/wp\/v2\/media\/2103"}],"wp:attachment":[{"href":"https:\/\/adiagri.com\/en\/wp-json\/wp\/v2\/media?parent=2096"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/adiagri.com\/en\/wp-json\/wp\/v2\/categories?post=2096"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/adiagri.com\/en\/wp-json\/wp\/v2\/tags?post=2096"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}