6-Benzylaminopurine (6-BA) yog cytokinin-hom nroj tsuag kev loj hlob regulator uas plays lub luag hauj lwm zoo nyob rau hauv cov txiv hmab txiv ntoo nyob rau hauv txiv hmab txiv ntoo ntoo. Lub luag haujlwm tseem ceeb ntawm kev ua ntawm 6-BA yog txhawm rau txhim kho cov txiv hmab txiv ntoo los ntawm kev txhawb nqa cell faib thiab tswj cov qib ntawm cov tshuaj hormones endogenous hauv cov nroj tsuag.
Tshwj xeeb, daim ntawv thov ntawm 6-BA thaum lub sij hawm flowering thiab cov tub ntxhais hluas txiv hmab txiv ntoo theem ntawm cov txiv hmab txiv ntoo ntoo muaj peev xwm txhawb nqa paj ntoos raj elongation thiab paj ntoos germination, kom ntseeg tau tias fertilization du thiab txo paj poob.
Ib txhij, 6-BA tuaj yeem cuam tshuam chlorophyll decomposition, ncua nplooj senescence, thiab thauj cov as-ham xws li amino acids thiab inorganic ntsev rau cov txiv hmab txiv ntoo, muab cov as-ham txaus rau cov txiv hmab txiv ntoo loj hlob thiab txo cov txiv hmab txiv ntoo physiological poob.
Piv txwv li, nyob rau hauv citrus thiab txiv apples, tshuaj tsuag 6-BA tom qab flowering tuaj yeem ua kom cov txiv hmab txiv ntoo muaj txiaj ntsig zoo, nrog rau qhov nruab nrab nce ntawm cov txiv hmab txiv ntoo zoo ntawm 27%.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias lub sij hawm thiab concentration ntawm 6-BA daim ntawv thov yog qhov tseem ceeb.
Feem ntau, thawj zaug txau yuav tsum pib 7-10 hnub tom qab flowering (thaum cov txiv hmab txiv ntoo yog hais txog qhov loj ntawm taum mog), tom qab ntawd los ntawm kev txau thib ob tom qab 10-15 hnub. Tsom ntsoov rau cov tshuaj tsuag rau ntawm cov txiv hmab txiv ntoo thiab cov txiv hmab txiv ntoo hluas kom tiv thaiv cov txiv hmab txiv ntoo tsis sib xws lossis cov txiv hmab txiv ntoo deformed.
Tsis tas li ntawd, 6-BA feem ntau siv ua ke nrog gibberellic acid thiab lwm yam khoom xyaw los txhim kho cov txiv hmab txiv ntoo nthuav dav. Txawm li cas los xij, nws yuav tsum tsis txhob siv ib leeg tom qab lub sijhawm thib ob ntawm cov txiv hmab txiv ntoo poob qis kom tsis txhob cuam tshuam cov txiv hmab txiv ntoo hloov xim lossis txhawb kev loj hlob ntawm lub caij ntuj sov ntau dhau.
