EVALUATION OF MUNGBEAN (VIGNA RADIATA) GENOTYPES FOR PHENOLOGICAL PARAMETER AND PHYSIOLOGICAL PARAMETER UNDER DROUGHT STRESS CONDITION

Abstract

The present study was conducted to assess the phenological parameter and relative water content during different developmental stages in mungbean varieties subjected to drought stress, and to screen the varieties for drought tolerance. The present study was planned in the year 2021-2022 to investigate the implications of drought stress on eight genotypes viz. ASHA, MH-318, MUSKAN, PAU-911, PM-5, PUSA, SAMRAT and Satya with complete randomized design under control and +drought stress for phenology. According to combined analysis of variance, there were significant effects on phenological traits Days to 50% Flowering, Days to Pod Seating, Days to Physiological Maturity and Relative water content under the drought stress condition. Genotype PAU-911 followed by MH-318 showed maximum in Days to 50% Flowering (45.5 and 44.0), Days to Pod Seating (50.1 and 48.7), Days to Physiological Maturity (76.9 and 72.5). According to combine analysis of variance, there were significant effect on physiological traits Relative water content (92.9 and 85.4), Canopy temperature (34.2 and 32.7) and Chlorophyll content (48.4 and 46.6) under normal as well as drought stress condition. Effect of drought reduced phenological parameter and ultimately reduction in yield. Genotypes PAU-911 and MH-318 was found best and promising in overall performance.