Leaf photosynthesis and yield response of winter green gram (Vigna radiata) to high temperature and elevated CO2 in the soil plant atmosphere research (SPAR)

Legumes play an important role in India’s food security, inflation rate and export values. Climate variability might significantly affect the growth, development yield of legume crops various regions globe. The present study investigated long episodes effect high temperature CO2 ambient conditions on leaf photosynthesis attributes green gram (Vigna radiata) using soil plant atmospheric research (SPAR). Green was grown under day (HDT) (day maximum + 3oC) elevated (600ppm) (HDT eCO2), night (HDNT) (HDNT eCO2) conditions. Leaf photosynthesis, stomatal conductance, transpiration chlorophyll index were (p=0.05) increased by 25%, 24.1%, 23% 4.6%, respectively, HDT eCO2 from 30 to 45 DAS (days after sowing) comparison with HDNT eCO2. significant increase number flowers shed per 13% during 60 DAS. pods grain 26.9% 25.7%, respectively. However, biomass These studies indicated a at flower initiation pod stage (30 DAS) followed condition. Overall that increasing would gram.