نویسندگان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
This experiment was conducted in 2009-10 and 2010-11 cropping cycles to evaluate drought tolerance of eighteen durum wheat genotypes using randomized complete block design with four replications under two moisture regimes (supplemental irrigation and rainfed) at Gachsaran Dryland Agricultural Research Station, Ghachsaran, Iran. Combined analysis of variance indicated that genotypes had significant differences for grain yield in supplemental irrigation (YP) and rainfed (YS) conditions. Considering YP, YS and drought tolerance indices genotype number 6 (GA//2*CHEN/ALTER84) with CIMMYT origin was identified as the most tolerant genotypes. GMP, MP, STI, K1STI and K2STI indices had positive and significant correlation with YP, YS and other indices except SSI, TOL, GOL and YSI. Therefore, these indices can be used for identification of tolerant durum genotypes. Results of principle component analysis explained 99% of total variation by the first component. The first and second components were identified as yield potential and stress tolerance components, respectively.
کلیدواژهها [English]
)