Enwere ụdị phytohormones ise amara ugbu a, ya bụ auxin, Gibberellic Acid GA3, Cytokinin, ethylene na abscisic acid. Na nso nso a, brassinosteroids (BRs) ejirila nke nta nke nta mata dị ka ngalaba nke isii nke phytohormones.

Brassinolides dị n'ụdị ngwaahịa ise:

(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)Brassinolide eke.

1.This ngwaahịa bụ osisi endogenous auxin-inducing ihe, nke mejupụtara 5 ụdị osisi endogenous auxins gụnyere indoles na 2 ụdị vitamin. Emebere ya na mgbakwunye exogenous, ọ nwere ike ịbawanye ọrụ nke auxin synthase endogenous na osisi n'ime obere oge wee mee ka njikọ nke auxin endogenous na okwu mkpụrụ ndụ pụta, na-akwalite nkewa sel, elongation na mgbasawanye, na-ebute nguzobe nke rhizomes, yana bara uru. ọhụrụ mgbọrọgwụ ibu na vascularization usoro iche, na-akwalite guzobe adventitious mgbọrọgwụ nke cuttings.

INDOLE-3-BUTYRIC ACID POTASSIUM SALT (IBA-K) bụ onye na-ahụ maka uto osisi na-akwalite mgbọrọgwụ ihe ọkụkụ. A na-ejikarị ya akwalite uto nke mgbọrọgwụ capillary akuku. Mgbe ejikọtara ya na Naphthalene acetic acid (NAA), enwere ike ịme ya ka ọ bụrụ ngwaahịa mgbọrọgwụ. Enwere ike iji INDOLE-3-BUTYRIC acid potassium nnu (IBA-K) na-egbutu mgbọrọgwụ nke mkpụrụ osisi, yana ịgbakwunye fatịlaịza mmiri, fatịlaịza ogbugba mmiri n'ubi na ngwaahịa ndị ọzọ iji kwalite mgbọrọgwụ ihe ọkụkụ ma melite ọnụego ndụ nke mkpụrụ osisi.