INFLUENCE OF MORPHO-PHYSIC:DOGICAL CHARACTERS ON YIELD AND HARD SEEDEDNESS OF MUNGBEAN [VIGNA RADIATA (L.) WILCZEK] LINES DURING SUMMER AND KHARIF SEASONGaganpreet Kaur, Usha Parmar and T. S. Bains
Two hard (ML-613 and ML-131) and two non-hard (NM-54 and Pusa-9972) seeded mungbean lines were selected to examine the influence of different morpho-physiological characters viz, plant height, number of leaves, leaf area plant leaf area of subtending leaves, ratio of leaf area of subtending leaves to leaf area of whole plant and leaf area index on the yielding ability and development of hard seeds in all the four lines under two sowing seasons (summer and kharif). Plant height, number of leaves plant-1 and leaf area plant' increased uniformly in hard seeded lines at all the stages contributing to their higher yield whereas, decrease in leaf area of subtending leaves and in ratio of leaf area of subtending leaves to leaf area of whole plant probably lead to formation of more hard seeds in these lines compared to non-hard seeded lines. Summer season was more favourable for quality seed formation but gave low yield than the khanf season suggesting that comparatively more vegetative growth and higher light interception during both the seasons lead to higher yield in hard seeded lines but percentage of hard seeds increased may be due to poor assimilate partitioning to the developing pods.
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