S-Abscisic Acid (ABA) ndi hormone ya zomera. S-Abscisic Acid ndiwowongolera kukula kwa zomera zomwe zimatha kulimbikitsa kukula kwa zomera, kupititsa patsogolo kukula kwa zomera, ndikulimbikitsa kukhetsa masamba. Popanga zaulimi, Abscisic Acid imagwiritsidwa ntchito makamaka kuyambitsa kukana kwa mbewuyo kapena kusinthira kumavuto, monga kukonza kukana chilala kwa mbewu, kukana kuzizira, kukana matenda, komanso kukana mchere wamchere.

4-Chlorophenoxyacetic acid (4-CPA) ndi phenolic chomera chowongolera kukula. 4-Chlorophenoxyacetic acid (4-CPA) imatha kuyamwa ndi mizu, zimayambira, masamba, maluwa, ndi zipatso za zomera. Ntchito yake yachilengedwe imakhala nthawi yayitali. Zotsatira zake za thupi ndizofanana ndi mahomoni amkati, kulimbikitsa kugawanika kwa maselo ndi kusiyana kwa minofu, kumalimbikitsa kukula kwa ovary, kuchititsa parthenocarpy, kupanga zipatso zopanda mbewu, ndi kulimbikitsa kukhazikitsidwa kwa zipatso ndi kukula kwa zipatso.

14-Hydroxylated brassinolide,28-homobrassinolide,28-epihomobrassinolide,24-epibrassinolide,22,23,24-trisepibrassinolide

Monga chowongolera kukula kwa mbewu, Brassinolide yalandira chidwi ndi chikondi chofala kuchokera kwa alimi. Pali mitundu 5 yosiyanasiyana ya Brassinolide yomwe imapezeka pamsika, yomwe ili ndi mawonekedwe ofanana komanso zosiyana. Chifukwa mitundu yosiyanasiyana ya Brassinolide imakhala ndi zotsatira zosiyanasiyana pakukula kwa mbewu. Nkhaniyi ifotokoza momwe zilili za mitundu 5 ya Brassinolide ndikuyang'ana pa kusanthula kusiyana kwawo.