Efekat regulatora rastenja na klijanje semena kičice (Centaurium erythraea Rafn)

Abstract

Centaury seeds are light-requiring. Long-term red light irradiation caused more than 80% of seeds to germinate. Seeds did not germinate in darkness. Gibberellic acid and GA7 can replace light, but N-substituted phtalimide AC 94,377 was ineffective. Light-induced germination was inhibited by abscisic acid and growth retardants such as ancymidol, tetcyclacis, and paclobutrazole. Growth retardant-caused inhibition can be overcome by the addition of gibberellic acid.

Klijanje semena kičice je zavisno od svetlosti. Dugotrajno osvetljavanje crvenom svetlošću dovodi do klijanja preko 80% semena. Semena ne klijaju u mraku. Giberelna kiselina i GA7 zamenjuju potrebu za svetlošću dok je N substituisani ftalimid AC 94,377 neefikasan. Klijanje indukovano svetlošću inhibiraju abscisinska kiselina i retardanti rastenja kao što su tetciklacis ancimidol i paklo-butrazol. Inhibicija klijanja izazvana retandantima može da se prevaziđe dodavanjem giberelina.