I-S-Abscisic Acid (ABA) iyi-hormone yesitshalo. I-S-Abscisic Acid isilawuli sokukhula kwezitshalo esingokwemvelo esingakhuthaza ukukhula kwezitshalo okudidiyelwe, sithuthukise ikhwalithi yokukhula kwezitshalo, futhi sikhuthaze ukuchitheka kwamaqabunga ezitshalo. Emkhiqizweni wezolimo, i-Abscisic Acid isetshenziswa kakhulu ukwenza ukuthi isitshalo simelane noma sijwayelane nobunzima, njengokuthuthukisa ukumelana nesomiso kwesitshalo, ukumelana nokubanda, ukumelana nezifo, kanye nokumelana nosawoti-alkali.

I-4-Chlorophenoxyacetic acid (4-CPA) iyisilawuli sokukhula kwesitshalo se-phenolic. I-4-Chlorophenoxyacetic acid (4-CPA) ingamuncwa izimpande, iziqu, amaqabunga, izimbali, nezithelo zezitshalo. Umsebenzi wayo webhayoloji uhlala isikhathi eside. Imiphumela yayo yomzimba ifana namahomoni angapheli, akhuthaza ukuhlukana kwamaseli kanye nokuhlukaniswa kwezicubu, okukhuthaza ukwanda kwe-ovary, ukugqugquzela i-parthenocarpy, ukwakha izithelo ezingenambewu, nokukhuthaza ukumiswa kwezithelo nokwanda kwezithelo.

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

Njengomlawuli wokukhula kwezitshalo, i-Brassinolide ithole ukunakwa okusabalele nothando kubalimi. Kunezinhlobo ezi-5 ezihlukene ze-Brassinolide ezivame ukutholakala emakethe, ezinezici ezifanayo kodwa futhi nomehluko othile. Ngoba izinhlobo ezahlukene ze-Brassinolide zinemiphumela ehlukene ekukhuleni kwezitshalo. Lesi sihloko sizokwethula isimo esithile salezi zinhlobo ezi-5 ze-Brassinolide futhi sigxile ekuhlaziyeni umehluko wabo.