I-S-abscisic Acid iyisilawuli sokukhula kwezitshalo esimsulwa, esitholakala ngokwemvelo esikwazi ukukhulisa ukumelana nesomiso kanye nokungangeni kommbila. Ngaphezu kwalokho, kusiza ukukhuphuka kwesivuno ngokulawula ukumila kwezitshalo, ukwehlisa ukubekwa kwezindlebe, nokuthuthukisa ikhwalithi yokusanhlamvu.
Isebenza njengesitshalo "isici esibangela ukucindezeleka," le nto yenza kusebenze izindlela zokubonisa ezincike ku-ABA lapho ummbila uhlangabezana nengcindezi yesomiso. Lokhu kuvula kwenza ukuba isisu sivaleke ukuze kuncishiswe ukuphuma kwamanzi kuyilapho ngesikhathi esifanayo kukhuthaza ukungena okujulile kwezimpande futhi kuthuthukisa umthamo wokuthatha amanzi. Ucwaningo lukhomba ukuthi ukwelashwa nge-concentration ka-2–3 mg·kg⁻¹ kungakhuphula kakhulu ubude besitshalo, ubude bezimpande, kanye nomsebenzi we-catalase wezithombo zommbila, ngaleyo ndlela kuqinise isisekelo sazo sokuphila sokumelana nesomiso.
Mayelana nokumelana nendawo yokulala, ukusetshenziswa kwangaphandle kwe-S-abscisic Acid kuvimbela ukwelulwa kwe-internode ngokweqile esiqwini, kuthuthukisa ukuthuthukiswa kwenqwaba yemithambo, futhi kuthuthukisa amandla emishini yesiqu. Indlela yayo yokusebenza ibandakanya ukulawula ibhalansi phakathi kwama-gibberellins angapheli nama-auxins, ngaleyo ndlela kuzuzwe umphumela oyifunayo "wokulawula ukukhula" (anti-overgrowth). Ukwengeza, i-S-abscisic Acid ithuthukisa izakhiwo zezitshalo ngokwehlisa ukuphakama kokubeka indlebe; lokhu kushintsha isikhungo sesitshalo sokudonsela phansi siye phansi, kunciphisa kakhulu ingcuphe yokulala ngesikhathi kunomoya noma imvula.
Mayelana nokuthuthukiswa kwekhwalithi kanye nokuthuthukiswa kwesivuno, i-S-abscisic Acid iqondisa ibhalansi phakathi kokukhula kwezitshalo nokuzala, yenza kube lula ukudluliselwa kwemikhiqizo ye-photosynthetic ohlamvini. Le nqubo iholela ekwandeni kokubili kwenani lokusanhlamvu ekhwebeni ngalinye kanye nesisindo sezinhlamvu eziyinkulungwane. Izivivinyo zasemasimini zibonise ukuthi ukusetshenziswa okuhlakaniphile kwe-S-abscisic Acid kungakhuphula isivuno sommbila ngaphezu kuka-5%, kuyilapho futhi kuthuthukisa ukugcwala okusanhlamvu kanye nesisindo sokuhlola, futhi kunciphisa ukuvela kwesikhunta.
Izincomo Zokusebenza Ezisebenzayo:
Ukucwiliswa Kwembewu/Ukucwiliswa emanzini: Ukucwiliswa kwembewu ku-0.3–0.5 mg/L S-abscisic Acid amahora angu-6-12 kungathuthukisa izinga lokuhluma futhi kuthuthukise ukumelana nokucindezeleka kwesigaba sezithombo.
Ukulawulwa Kokukhula (Ukunqanda ukukhula) Esigabeni Sezithombo:Ukufakwa kweqabunga kwesixazululo esingu-1–2 ppm phakathi nesigaba samaqabunga angu-6–8 kunganqanda ngempumelelo ukunwetshwa kwe-internode futhi kwehlise ukubeka indlebe.
Izikhathi Ezibalulekile Zokumelana Nengcindezi:Faka isixazululo esingu-50–100 ppm ngokufafaza ngesikhathi sokuhlanganisa, noma izinsuku ezingu-3–5 ngaphambi kwesomiso okulindelekile noma izimo zezinga lokushisa eliphansi, ukuze uqinise amandla esitshalo ukumelana nengcindezi.
