Effect of Ethylene Synthesis and Perception Inhibitor and ABA on Seed Germination of Vigna radiata

In the present investigation the effect of cobalt chloride (CoCl ), ethylene biosynthesis inhibitor and 2 silver nitrate (AgNO ), ethylene perception inhibitor was studied on the seed germination of Vigna radiata. 3 While ethylene slightly promoted germination, both the inhibitors decreased the germination percentage. However, Ag was more effective in retarding germination than Co . A combined treatment with silver nitrate 2+ 2+ and cobalt chloride overcame inhibition with reference to silver nitrate treatment,whereas it was almost without effect compared to the treatment with cobalt chloride alone. Ethylene treatment could somewhat rescue germination from inhibition by Ag but was ineffective in case of Co . Abscisic acid (ABA) caused a lower 2+ 2+ germination percentage at a very high concentration. Ethylene treatment following ABA treatment showed rescue effect to some extent on germination of Vigna radiata seeds.