Effect of High Temperature Stress on Photosynthetic Pigments, Dry Matter Partitioning and Yield of Blackgram (Vigna mungo L.) Genotypes at Pod Formation Stage

A field experiment was conducted at College farm, Agricultural College, Bapatla, Acharya N.G. Ranga Agricultural University during summer, 2022 and 2023 to study the impact of high temperature stress on photosynthetic pigments, dry matter partitioning and yield of blackgram genotypes at pod formation stage. The experiment was carried out in randomized block design with two replications. Among the thirty blackgram genotypes screened for their tolerance to high temperature stress at pod formation stage, the genotype, TBG-129, LBG-1015 and PU-1804 were found to withstand high temperature stress and maintain higher total chlorophyll content, carotenoids content, dry matter partitioning and higher seed yield per plant indicating tolerance to high temperature stress. These blackgram genotypes can be further used as donors in the pulse breeding program for development of heat resilent varieties.