Lub luag haujlwm ntawmIAA 3-indole acetic acid
Siv ua ib yam khoom siv los txhawb kev loj hlob ntawm cov nroj tsuag thiab ua ib yam tshuaj siv los tshuaj xyuas. IAA 3-indole acetic acid thiab lwm yam auxin xws li 3-indoleacetaldehyde, IAA 3-indole acetic acid thiab ascorbic acid muaj nyob rau hauv xwm. Tus ua ntej ntawm 3-indoleacetic acid rau biosynthesis hauv cov nroj tsuag yog tryptophan. Lub luag haujlwm tseem ceeb ntawm auxin yog nyob rau hauv kev tswj hwm kev loj hlob ntawm cov nroj tsuag. Nws tsis yog tsuas yog txhawb kev loj hlob xwb tab sis kuj muaj cov txiaj ntsig ntawm kev txwv tsis pub loj hlob thiab kev tsim cov kab mob. Auxin tsis yog tsuas yog muaj nyob rau hauv lub xeev dawb hauv cov hlwb ntawm cov nroj tsuag, tab sis kuj tuaj yeem khi ruaj khov rau cov macromolecules biological thiab lwm hom auxin. Kuj tseem muaj auxin uas tuaj yeem tsim cov complexes nrog cov tshuaj tshwj xeeb, xws li indole-acetylasparagine, indole-acetyl pentose acetate thiab indole-acetylglucose, thiab lwm yam. Qhov no yuav yog ib hom auxin khaws cia hauv cov hlwb thiab kuj yog ib txoj hauv kev tshem tawm cov tshuaj lom los tshem tawm cov tshuaj lom ntawm auxin ntau dhau.
Ntawm theem cellular, auxin tuaj yeem txhawb kev faib ntawm cambium hlwb; Txhawb kev ntev ntawm cov ceg hlwb thiab tiv thaiv kev loj hlob ntawm cov hauv paus hlwb; Txhawb kev sib txawv ntawm xylem thiab phloem hlwb, pab txhawb kev cag ntawm kev txiav, thiab tswj hwm morphogenesis ntawm callus.
Auxin ua lub luag haujlwm txij thaum cov noob mus txog rau thaum cov txiv hmab txiv ntoo loj hlob ntawm ob qho tib si lub cev thiab tag nrho cov nroj tsuag. Lub teeb liab uas thim rov qab tau inhibition ntawm auxin hauv kev tswj cov mesocotyl elongation hauv cov noob; Thaum indoleacetic acid hloov mus rau sab qis ntawm ceg, qhov geotropy ntawm ceg tshwm sim. Thaum indoleacetic acid raug hloov mus rau sab ntxoov ntxoo ntawm ceg, qhov phototropism ntawm ceg tshwm sim. Indoleacetic acid ua rau sab saum toj dominance; Ncua nplooj senescence; Auxin siv rau ntawm nplooj inhibits shedding, thaum auxin siv rau ntawm qhov kawg ntawm cov txheej dissociated txhawb nqa shedding. Auxin txhawb nqa paj, ua rau kev loj hlob ntawm cov txiv hmab txiv ntoo unisexual, thiab qeeb txiv hmab txiv ntoo ripening.
Txoj kev siv ntawmIAA 3-indole acetic acid
1. Ua kom ntub
(1) Thaum lub sijhawm paj tag nrho ntawm cov txiv lws suav, cov paj raug tsau rau hauv cov tshuaj ntawm 3000 milligrams ib liter kom ua rau cov txiv lws suav parthenogenic thiab teeb tsa txiv hmab txiv ntoo, tsim cov txiv lws suav tsis muaj noob thiab ua rau cov txiv hmab txiv ntoo teeb tsa sai dua.
(2) Kev tso cov cag kom cov cag zoo li txiv apples, txiv peaches, txiv pears, txiv citrus, txiv hmab, txiv kiwis, txiv strawberries, poinsythia, carnations, chrysanthemums, paj roses, magnolias, rhododendrons, tshuaj yej nroj tsuag, metasequoia glyptostroboides, thiab poplar, thiab ua rau cov cag zoo, ua kom cov cag sai dua. Feem ntau, 100-1000mg/L siv los tso cov cag rau hauv paus. Rau cov hom uas yooj yim tso cov cag, siv cov tshuaj tsawg dua. Rau cov hom uas tsis yooj yim tso cov cag, siv cov tshuaj ntau dua me ntsis. Lub sijhawm tso cov cag yog kwv yees li 8 txog 24 teev, nrog rau cov tshuaj ntau thiab lub sijhawm tso cov cag luv luv.
2. Tshuaj tsuag
Rau cov paj chrysanthemums (nyob rau hauv lub teeb ci 9-teev), txau cov tshuaj ntawm 25-400mg / L ib zaug tuaj yeem tiv thaiv qhov tshwm sim ntawm cov paj thiab ncua kev tawg paj.
Lub sijhawm tshaj tawm: Lub Xya Hli-07-2025