Plant growth regulators priming enhances seed quality and enzymes activity in mungbean (Vigna radiata L.)

Abstract

Field experiments were conducted at the research farm of Directorate of Seed Research, Mau to
improve the germination, stand establishment, and growth of mungbean employing the seed priming
techniques. Seeds of two mungbean varieties viz: Samrat and Pusa Vishal were sand primed with
50 ppm and 100 ppm solution of growth regulators viz. Gibberellic Acid (GA3), Indol Acetic Acid
(IAA), Indol butyric acid (IBA) and Kinetin separately for 8 hours. Experiments were conducted in
laboratory as well as in the cemented pots of 15 kg capacity. The results revealed that PGR priming
showed significant enhancement in the seed quality parameters, growth, nitrate assimilatory
enzymes and alpha amylase activity over unprimed control. Among treatments performance of
GA3 @ 100 ppm was superior over others in respect of seed germination, field emergence, seedling
growth, vigour index 1 & 2, nitrate assimilatory enzymes including nitrate reductase and nitrite
reductase and germination enzyme alpha amylase.