Morpho-physiological responses of chickpea genotypes under different temperature regimes
Nilesh D Jadhav, SR Gadakh, SB Korade and NS Kute
Heat stress is a abiotic stress and directly and indirectly affect on plant growth and its developmental processes. The aim of this study was to screen heat tolerant genotypes on the basis of morpho-physiological and yield parameters. This investigations was carried out in Phytotron unit M.P.K.V., Rahuri on two different temperature regimes viz., 20/15 ºC and 25/20 ºC and Fourteen chickpea genotype including checks. Results denoted significant effect of heat stress on Days to flower initiation, days to 50% flowering and days to physiological maturity, Plant height, Total dry matter production, net photosynthetic rate, transpiration rate, stomatal conductance, Canopy temperature, SPAD index, number of pods per plant and grain yield per plant. The interaction effect was significant for all phonological parameters, plant height and SPAD index only. In temperature 20/15 ºC and 25/20 ºC Phule G-1012-15 recorded highest yield plant-1 at temperature 20/15 ºC and 25/20 ºC (9.23 and 8.30 g respectively) followed by genotype Phule G-0914-6-17 (8.94 and 8.01 g respectively) and Phule G-171104 (8.77 and 7.83 g respectively). Genotypes like Phule G-1012-15, Phule G-0914-6-17 and Phule G-171104 proved to be promising for heat stress with higher net photosynthetic rate, stomatal conductance and SPAD index, Whereas lower rate of transpiration and canopy temperature produced higher grain yield per plant (9.23 and 8.30 g),(8.94 and 8.01 g), (8.77 and 7.83 g respectively) as compared to stress susceptible genotypes such as JG-16 (G11) (5.36 and 4.57 g), Phule G-16115 (G8) (6.30 and 4.97 g), Phule G-1226-33-14 (G1) (6.39 and 5.38) decreased grain yield per plant.
How to cite this article:
Nilesh D Jadhav, SR Gadakh, SB Korade and NS Kute. Morpho-physiological responses of chickpea genotypes under different temperature regimes. The Pharma Innovation Journal. 2021; 10(11S): 343-348.