PJB-2024-179
THE IMPACT OF PHYSIOLOGICAL TRAITS ON WHEAT GENOTYPE PERFORMANCE ACROSS ENVIRONMENTAL VARIATIONS
Merve BAYHAN
Abstract
The objective of this study was to assess the performance of bread wheat genotypes under drought conditions and investigate key agronomic traits. This study was conducted at the Research and Application Field of the Faculty of Agriculture at Dicle University in Diyarbakır, Turkiye, encompassing both rainfed and irrigated conditions. Nine wheat genotypes were used as experimental materials. Notably, the first year of the study exhibited decreased values for most traits under rainfed conditions compared to irrigated conditions, a trend that was less pronounced in the second year and varied based on climatic conditions. Noteworthy findings include the exceptional performance of the Dinç and Wafia varieties, which displayed significant improvements in grain yield with supplemental irrigation. Heading time, normalized difference vegetation index, leaf area index, plant height, and thousand-kernel weight were identified as the crucial factors influencing grain yield. In the first year, the DZ17-1 and Empire genotypes, and in the second year, the DZ17-1, Ceyhan-99, and Dinç genotypes demonstrated the highest grain yield potential. Notably, Empire exhibited superior performance under dry conditions, underscoring its drought resilience. These findings highlight the importance of selecting appropriate wheat genotypes and irrigation strategies to mitigate the effects of drought on wheat production.
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