Izilawuli zokukhula kwezitshalo ngokuvamile zihlukaniswa ngezigaba ezinhlanu: ama-auxins, ama-gibberellins, ama-cytokinins, i-abscisic acid ne-ethylene. Namuhla ngikhuluma ikakhulukazi ngemisebenzi ye-auxin ne-gibberellin
(1) Auxin
I-Auxin esitshalweni ikhiqizwa ikakhulukazi emahlumela amasha, amaqabunga amancane kanye nemibungu ekhulayo, futhi inezici zokuthutha eziphondweni. I-Auxin ilawula ijubane lokunwetshwa kwamangqamuzana ngokuthinta ukunwebeka kodonga lweseli, ikhuthaze ukunwebeka kwamangqamuzana, futhi lapho ithuthwa iyiswa phansi isuka ekudubuleni, ingashukumisa ukuhlukana kwamaseli wehlumela nesiqu se-cambium, futhi ivimbele ukukhula kwe-lateral. imiqumbe. ukuthuthukiswa, futhi kunomthelela wokuvimbela ukuguga. I-Auxin isetshenziswa kakhulu ukukhuthaza ukunqunywa kwezihlahla zezithelo, ukuphungulwa kwezimbali nokunciphisa izithelo, futhi isetshenziswa kabanzi ekuvimbeleni ukwehla kwezithelo ngaphambi kokuvuna kanye nokulawula ukumila kwamathila.
(2) Ama-Gibberellins
Ama-gibberellins ezitshalweni akhiqizwa ikakhulukazi emaqabunga amancane, imibungu emincane nezimpande, futhi azikho izici zokuthutha ezicacile ze-polar. Uma i-gibberellin isetshenziswa ngaphandle ezihlahleni zezithelo, ukuhamba kwayo nakho kumpofu futhi ukusebenza kwayo kunemikhawulo ecacile. Umsebenzi oyinhloko we-gibberellin uwukuthi: ukukhuthaza ukukhula kwamahlumela amasha ezihlahla zezithelo, ngaleyo ndlela kukhuthaze ukukhula kwamahlumela amasha; ukuphula i-dormancy yama-buds kanye nembewu, ukukhuthaza ukuhluma kwembewu nama-buds; ukuvimbela ukwakheka kwezimbali nokunciphisa inani lezimbali; Sebenzisa kanye namavithamini ukuvimbela izithelo ezincane ukuthi zingawi futhi zikhuthaze ukukhula kwezithelo. Ngaphezu kwalokho, ama-gibberellins nawo anomphumela wokubambezela ukuvuthwa kwezithelo.
Amagama angukhiye:izilawuli zokukhula kwezitshalo,Gibberellin
Isikhathi sokuthumela: Sep-08-2023