Effect of water stress on biochemical characteristics of summer Mungbean (Vigna radiata (L.)Wilczek)

In order to investigate the effect of water stress on mungbean genotypes and its biochemical responses to yield. A field experiment was conducted using split plot design with the four irrigation level and the biochemical traits like chlorophyll, protein, proline, glycine betaine, lipid peroxidation, catalase activity and peroxidase activity were determined. The biochemical parameters like chlorophyll content and protein significantly decreased under the water stress condition. Significantly highest accumulation of other biochemical parameters such as glycine-betaine, proline, lipid peroxidation, catalase and peroxidase increased under the stress condition compared to irrigation condition. Among all the six genotypes, NKM-15-08 showed higher seed yield which was due to accumulation of glycine-betaine, proline, catalase and peroxidase was higher under the water stress condition. Thus it enabled the genotype to thrive better in the water stress condition and produce higher yield under water deficient.