نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری تخصصی، گروه زراعت و اصلاح نباتات، دانشگاه آزاد اسلامی، واحد کرج، باشگاه پژوهشگران و نخبگان جوان، کرج، ایران.
2 دانشیار، گروه زراعت و اصلاح نباتات، دانشگاه آزاد اسلامی، واحد کرج، کرج، ایران.
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
This study aimed to determine the yield stability and adaptability and also analysis of the effect of genotype-environment interaction of 15 cotton genotypes in four regions of Birjand, Shiraz, Karaj, and Kashmar in randomized complete block design with three replications. Combined analysis of variance showed that the effect of environment was significant at the 5% level probability and the effects of genotype and genotype-environment interaction were significant at the 1% level probability. Based on AMMI model only the first main component of the interaction effect was significant and explained about 63% of changes related to the interaction of genotype with the environment. According to the biplot of average yield of genotypes and environments and first main components of interaction in the AMMI model, genotypes of DeltaPin 25, Oltan, SP731, Varamin, SB35, and Shirpan 603 had a nearly zero interaction, among them SB35 and Varamin genotypes were due to yield higher than the total mean as high yield stable genotypes. Based on graphical biplot analysis, the environments studied were located in two mega-environments and consistent genotypes were identified in each mega-environment. The first mega-environment included Birjand and Shiraz and Bakhtegan and Mehr genotypes had the most specific adaptability with them. N-200 genotype had the highest specific adaptability with Karaj and Kashmar (second mega-environment). The ideal genotypes and environment biplots, respectively, introduced SB35 and Birjand to the nearest genotype and environment to the most ideal condition. The results confirm the high effect of genotype-environment interaction on the yield of cotton genotypes.
کلیدواژهها [English]