Growth and physiological characters in staygreen wheat introgression lines under post anthesis drought stress
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Date
2022
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Punjab Agricultural University
Abstract
Climate change is a significant threat to the majority of agricultural crops around the world. In wheat, drought stress at post-anthesis stage is known to affect the yield and yield attributes. Genotypes with stay green trait retain the chlorophyll for longer duration and have a positive association with yield attributing traits particularly in crops experiencing abiotic stress. In this study, some stay green introgression lines were evaluated for germination under water stress conditions and yield and yield related traits under post-anthesis drought stress Under laboratory conditions, the genotypes were screened by creating drought stress using PEG 6000. The genotypes were analyzed on the basis of germination percentage, shoot length, root length, root: shoot ratio, seedling fresh and dry weight, seedling relative water content and vigour index. The genotypes BWL 4421, BWL 4423, BWL 4431 and BWL 4435 performed well. In the field the genotypes were analyzed on the basis of yield and yield attributing traits. The genotypes BWL 4431 and BWL 4435 performed well in the laboratory experiment as well as in the field experiment. Overall, the stay green lines performed better than the non-stay green check (Unnat PBW 550) in yield attributing traits and also yield by maintaining yield and other components.
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Shelly (2022). Growth and physiological characters in staygreen wheat introgression lines under post anthesis drought stress (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.