Vol. 12, Issue 11 (2023)

Author(s):
Shreya Sen, Amitava Paul, RS Pan and Hena Parveen

Abstract:
The present study was conducted with 25 mungbean genotypes in Randomized Block Design with 3 replicates per variety with three levels of stress treatment i.e. Control (no stress), drought induced at vegetative stage (25 days after sowing) and drought induced at reproductive stage (35 days after sowing). Analysis of variance indicated sufficient amount of variability for fifteen morphophysiological and biochemical characters. The genotypes such as Samrat, Banka local Mung, KL 4 and IPM 205-7 showed higher mean in desirable direction for days to fifty percent flowering, days to maturity, primary branches per plant, cluster per plant, pods per plant, seed per pod, 100 seed weight, harvest index, proline content, leaf area, chlorophyll content and seed yield per plant. Higher values of GCV and PCV were recorded for traits like Pods per plant, protein content, leaf area and seed yield per plant under control condition, while under drought at vegetative and reproductive stage most of the traits such as cluster per plant, pods per plant, harvest index, protein content, proline content, leaf area and seed yield per plant showed higher values of GCV and PCV. Genetic advance was recorded highest for leaf area under control as well as stress condition. Traits like days to fifty percent flowering, days to maturity, pods per plant, protein content, proline content, relative water content, leaf area, chlorophyll content and seed yield per plant exhibited moderate to high heritability under control condition, while under stress condition, both during vegetative and reproductive stage, heritability estimates were high for days to maturity, cluster per plant, pods per plant, seed per pod, 100 seed weight, protein content, proline content, relative water content, leaf area, chlorophyll content and seed yield per plant. From the pooled genotypic correlation analysis during both the years, positive and significant association was depicted by Primary branches per plant, cluster per plant, pods per plant, seed per pod, 100 seed weight, harvest index, proline content, leaf area and chlorophyll content.