Gibberellic Acid GA3 o se faʻatonuga o le tuputupu aʻe o laʻau lautele e faʻaaogaina lautele i laau aina. E i ai le aafiaga o le faatelevaveina o le tuputupu aʻe ma le atinaʻeina o laʻau ma faʻalauteleina le faʻalauteleina o sela. E masani ona faʻaaogaina e faʻaosofia ai le parthenocarpy, faʻasao fugalaau ma fualaau aina.

O le hormone tuputupu aʻe o laʻau o se ituaiga o vailaau faʻasaina e faʻaaogaina e faʻatonutonu ai le tuputupu aʻe ma le atinaʻeina o laau. Ose mea fa'apipi'i fa'akomepiuta fa'atasi ai ma a'afiaga fa'anatura o le homone. Ose fa'asologa fa'apitoa o vaila'au fa'atosina. E mafai ona faʻatonutonu le tuputupu aʻe ma le atinaʻeina o laʻau pe a talafeagai le aofaʻi o le faʻaoga

O loʻo i ai nei vaega e lima faʻamaonia o phytohormones, e pei o auxin, Gibberellic Acid GA3, Cytokinin, ethylene, ma le abscisic acid. Talu ai nei, brassinosteroids (BRs) ua faasolosolo malie ona aloaia o le ono vaega tele o phytohormones.

O lo'o maua Brassinolides i vaega o oloa e lima:

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

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

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

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

(5)Natural Brassinolide