ارزیابی تحمل به خشکی گندم با استفاده از تجزیه شاخصهای تحمل به خشکی

In order to identify drought tolerant varieties and screening the drought tolerance indices, 31 cultivar of wheat were tested in a randomized complete block design with three replications in both rainfed and irrigated conditions in Agriculture and Natural Resources Research Station in the city of Sanandaj were tested. Conventional drought tolerance indices were calculated. Highly significant differences were observed among cultivars for all indices and potential and stress yield that indicator the existence of genetic variation and making it possible selection among cultivars for drought tolerance as well as possibility hybridization for the genetic studies and breeding programs. Correlation analysis between single plant yield rainfed and irrigated conditions and drought tolerance indices showed that the MP, GMP and STI indices are suitable for screening the wheat cultivars. Regarding these criteria and high yield in both irrigated and rainfed conditions cultivars Pishgam, Alvand, Ws-82-9, Chamran and Sivand were diagnosed drought tolerant. Finally, among the five cultivar, cultivar Pishgam, Alvand and Ws-82-9 due to their high performance in dry conditions as drought tolerant cultivars were introduced.