Njengamanje kunezigaba ezinhlanu ezaziwayo zama-phytohormones, okuyi-auxin, i-Gibberellic Acid GA3, i-Cytokinin, i-ethylene, ne-abscisic acid. Muva nje, i-brassinosteroids (BRs) kancane kancane iye yaqashelwa njengesigaba sesithupha esikhulu sama-phytohormones.

Ama-Brassinolides atholakala ngezigaba ezinhlanu zomkhiqizo:

(1)24-trisepibrassinolide: 72962-43-9 C28H48O6

(2)22,23,24-trisepibrassinolide :78821-42-9

( 3)28-epihomobrassinolide: 80843-89-2 C29H50O6

(4)28-homobrassinolide:82373-95-3 C29H50O6

(5)I-Brassinolide Yemvelo

1.Lo mkhiqizo uyisitshalo endogenous auxin-inducing factor, esakhiwe 5 izinhlobo zezitshalo endogenous auxins kuhlanganise indoles kanye 2 izinhlobo zamavithamini. Yakhelwe ngokungezwa okungavamile, ingakhuphula umsebenzi we-endogenous auxin synthase ezitshalweni ngesikhathi esifushane futhi ibangele ukuhlanganiswa kwe-auxin engapheli kanye ne-gene expression, ikhuthaza ngokungaqondile ukuhlukana kwamaseli, ukunwetshwa nokwanda, ibangele ukwakheka kwama-rhizomes, futhi inenzuzo ukukhula okusha kwezimpande kanye nokwehlukaniswa kwesistimu ye-vascularization, kukhuthaza ukwakheka kwezimpande ezizayo zokusika.

I-IndoLE-3-BUTYRIC ACID POTASSIUM SALT (IBA-K) isilawuli sokukhula kwezitshalo esikhuthaza ukuhluma kwezitshalo. Isetshenziselwa ikakhulukazi ukukhuthaza ukukhula kwezimpande ze-capillary zezitshalo. Uma ihlanganiswa ne-Naphthalene acetic acid (NAA), ingenziwa ibe yimikhiqizo yezimpande. I-Indole-3-BUTYRIC ACID POTASSIUM SALT (IBA-K) ingasetshenziselwa ukusika izimpande zezithombo, kanye nokwengeza ukuvundisa okuguquguqukayo, umanyolo wokunisela nge-drip neminye imikhiqizo ukukhuthaza ukuhluma kwezitshalo nokwenza ngcono izinga lokusinda lokusikwa.