Dissecting Bread Wheat Heritability For Yield And Yield Related Physiological Components For Drought Tolerance

Abstract

Drought is a periodic natural phenomenon that develops while there is a critical shortage of precipitation. Drought is a major hazard that is known to inflict substantial damage. Crops adapt to drought stress in several different ways by alteration in morphological, physiological, metabolic, and molecular responses. Water deficiency has a detrimental effect on the vegetative and reproductive phases of plants. In a field trial, twenty-five different bread wheat genotypes were used for the assessment of physiological traits that most effectively mitigate the effects of drought stress. Higher levels of were observed in moisture deficient conditions. In drought stress treatment The longest number of days till heading were recorded for the line Zarlashta-99 , the tester NARC-11 (103.7). The cultivars with the longest time taken for maturity reports were Zarghoon-79 and Pirsabak-15 (125.9), as well as the testers Aas-11 and Raskoh-05. Under drought stress, the 1000 grain weight was highest for the lines Zarghoon-79 and Sariab-92, the tester Dharabi had better weight than other lines. The relationship between grain production and physiological traits is positive.