Gibberellins tau pom thawj zaug los ntawm cov kws tshawb fawb Nyij Pooj thaum lawv tab tom kawm nplej "bakanae kab mob".Lawv tshawb pom tias yog vim li cas vim li cas cov qoob loo uas muaj kab mob bakanae loj hlob elongated thiab yellowed yog vim cov tshuaj secreted los ntawm gibberellins.Tom qab ntawd, qee cov kws tshawb fawb tau cais cov tshuaj nquag no los ntawm kev lim dej ntawm Gibberella kab lis kev cai nruab nrab, txheeb xyuas nws cov qauv tshuaj, thiab hu ua gibberellin.Txog tam sim no, 136 gibberellins nrog cov qauv tshuaj ntshiab tau raug txheeb xyuas thiab muaj npe GA1, GA2, GA3, thiab lwm yam.Tsuas yog ob peb Gibberellic acids nyob rau hauv cov nroj tsuag muaj physiological teebmeem nyob rau hauv regulating cog kev loj hlob, xws li GA1, GA3, GA4, GA7, thiab lwm yam.

Qhov chaw loj hlob sai ntawm cov nroj tsuag yog qhov chaw tseem ceeb rau kev sib txuas ntawm gibberellins.Gibberellins ua nyob ze tom qab lawv raug tsim.Cov ntsiab lus gibberellin ntau dhau yuav cuam tshuam rau kev tawm los thiab zoo ntawm cov nroj tsuag.Niaj hnub no, ntau "anti-gibberellin" cog kev loj hlob retardants tau tsim raws li cov khoom siv hluavtaws ntawm gibberellins, feem ntau suav nrog: chlormequat, mepifenidium, paclobutrazol, uniconazole, thiab lwm yam.

  

Lub luag haujlwm tseem ceeb ntawm gibberellins yog:
1. Txhawb cov noob germination: Gibberellin tuaj yeem ua rau lub xeev dormant ntawm cov noob cog, tubers, buds, thiab lwm yam thiab txhawb kev loj hlob.
2. Kev cai ntawm cov nroj tsuag qhov siab thiab lub cev loj: Gibberellin tuaj yeem tsis tsuas yog txhawb cov nroj tsuag ntawm tes elongation tab sis kuj txhawb kev faib cell, yog li tswj cov nroj tsuag qhov siab thiab lub cev loj.
3. Txhawb kev cog paj: Kev kho nrog gibberellins tuaj yeem ua rau cov nroj tsuag biennial uas tsis tau vernalized ntawm qhov kub thiab txias (xws li radish, Suav cabbage, carrots, thiab lwm yam) kom tawg rau xyoo tam sim no.Rau qee cov nroj tsuag uas tuaj yeem tawg nyob rau hnub ntev, gibberellin tuaj yeem hloov lub luag haujlwm ntawm hnub ntev kom lawv tawg nyob rau hnub luv.
4. Gibberellin kuj tseem tuaj yeem txhawb kev loj hlob ntawm cov txiv hmab txiv ntoo, ua kom cov txiv hmab txiv ntoo muaj txiaj ntsig ntau dua lossis tsim cov txiv hmab txiv ntoo tsis muaj noob.
5. Gibberellins kuj muaj feem cuam tshuam rau kev loj hlob paj thiab kev txiav txim siab poj niam txiv neej.Rau cov nroj tsuag dioecious, yog kho nrog gibberellin, qhov feem ntawm txiv neej paj yuav nce;rau cov poj niam cov nroj tsuag ntawm dioecious nroj tsuag, yog tias kho nrog Gibberellic acid, txiv neej paj yuav induced.

Cov kev ceev faj
(1) Thaum gibberellin siv los ua tus neeg sawv cev ntawm cov txiv hmab txiv ntoo, nws yuav tsum tau siv nyob rau hauv cov dej txaus thiab chiv;Thaum siv los ua kev txhawb nqa kev loj hlob, nws yuav tsum tau siv ua ke nrog foliar chiv kom zoo dua rau kev tsim cov noob muaj zog.
(2) Gibberellin yooj yim rau decompose thaum raug alkali.Tsis txhob sib xyaw nrog cov tshuaj alkaline thaum siv nws.
(3) Vim hais tias gibberellin yog rhiab heev rau lub teeb thiab kub, qhov chaw tshav kub yuav tsum tau zam thaum siv, thiab cov tshuaj yuav tsum tau npaj thiab siv tam sim ntawd.
(4) Tom qab kev kho gibberellin, tus naj npawb ntawm cov noob infertile nce, yog li nws yuav tsum tsis txhob siv rau hauv kev ua liaj ua teb.