S-Abscisic Acid (ABA) bụ homonụ nke osisi. S-Abscisic Acid bụ onye na-ahụ maka uto ihe ọkụkụ sitere n'okike nke nwere ike ịkwalite uto osisi achikọtara ọnụ, melite ogo uto osisi, ma kwalite ịkwasa akwụkwọ osisi. N'ime mmepụta ugbo, Abscisic Acid bụ nke a na-ejikarị eme ihe iji mee ka ihe ọkụkụ na-eguzogide onwe ya ma ọ bụ usoro mmeghari maka nhụjuanya, dị ka imeziwanye nkwụsị nke ụkọ mmiri ozuzo, nguzogide oyi, nguzogide ọrịa, na nguzogide nnu-alkali.

4-Chlorophenoxyacetic acid (4-CPA) bụ ihe na-achịkwa uto osisi phenolic. 4-Chlorophenoxyacetic acid (4-CPA) nwere ike itinye uche na mgbọrọgwụ, ị ga, epupụta, ifuru, na mkpụrụ osisi. Ọrụ ndu ya na-adịru ogologo oge. Ya physiological mmetụta yiri endogenous hormones, na-akpali akpali cell nkewa na anụ ahụ dị iche iche, na-akpali ovary mgbasa, inducing parthenocarpy, na-akpụ mkpụrụ na-enweghị mkpụrụ, na-akwalite mkpụrụ ntọala na mkpụrụ mgbasa.

14.

Dị ka onye na-ahụ maka uto ihe ọkụkụ, Brassinolide enwetawo nlebara anya na ịhụnanya zuru oke site n'aka ndị ọrụ ugbo. Enwere ụdị Brassinolide 5 dị iche iche a na-ahụkarị n'ahịa, nke nwere njiri mara mana yana ụfọdụ ndịiche. N'ihi na ụdị Brassinolide dị iche iche nwere mmetụta dị iche iche na uto osisi. Isiokwu a ga-ewebata ọnọdụ kpọmkwem nke ụdị 5 ndị ​​a Brassinolide ma lekwasị anya na nyochaa ọdịiche ha.