Effect of different thermal environments on yield and yield attributes of different mustard genotypes under Chhattisgarh plain climatic conditions

Abstract

The present investigation entitled “Effect of different thermal environments on Yield and yield attributes of different mustard genotypes under Chhattisgarh plain climatic conditions” was carried out at the research farm, I.G.K.V., Raipur during rabi season of 2015-2016. Dry matter accumulation was significantly maximum in crop sown on 25th November and thereafter the rate of dry matter accumulation declined due to delayed in sowing up to 15th December. Leaf area index was faster right from 25 DAS to 55 DAS with maximum values at 55 DAS in case of crop sown on 25th November as compared to delayed sown crop. Highest siliqua length was recorded in crop sown on 25th November with a maximum value of 6.23 cm in variety PT-303 and minimum in variety PT-30 (5.11 cm). The maximum number of seeds siliqua-1 was recorded in crop sown on 25th November in variety Pusa Mustard-26 (13.60) while the lowest were recorded in crop sown on 15th December in variety PT-30 (11.20) and 1000-seed weight was also recorded maximum in crop sown on 25th November in variety Pusa Mustard (6.01 g) while lowest was recorded from variety PT-30 (4.93 g) crop sown on 15th December. Highest stover and seed yield were recorded in crop sown on 25th November as compared to delayed sowings. Among the varieties, higher seed yield was recorded from Pusa mustard-26 in all thermal environments as compared to other varieties.