نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی تولید و ژنتیک گیاهی، دانشکده علوم و مهندسی کشاورزی، دانشگاه رازی، کرمانشاه، ایران
2 مرکز تحقیقات غلات، دانشگاه رازی، کرمانشاه، ایران
3 موسسه تحقیقات کشاورزی دیم کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرمانشاه، ایران
4 گروه گیاه پزشکی، دانشکده علوم و مهندسی کشاورزی، دانشگاه رازی، کرمانشاه، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Given the importance of knowledge of genetic diversity in advancing the goals of breeding programs, examining morphological characteristics that determine yield is one of the appropriate methods for achieving selection criteria for improving yield and introducing commercial varieties of durum wheat. In this study, 171 durum wheat genotypes, including 69 genotypes received from ICARDA and 100 genotypes received from CYMMIT, along with two durum wheat cultivars “Saji and Zahab” as checks, were evaluated in an observational experiment under rainfed conditions for grain yield, thousand-grain weight, and grain-related morphological characteristics during two consecutive cropping seasons (2017-18 and 2018-19). Based on the results, significant difference in grain yield and grain-related morphological characteristics was observed in the studied genotypes. The results showed that the first cropping season had a lower average grain yield and a higher thousand-grain weight than the second cropping season. The correlation pattern of traits and genotype grouping based on cluster analysis was somewhat similar in both years. The results of factor analysis showed that grain length, grain length and width, the distance between intersection of length and width and center of gravity explained a significant percentage of the variance among the studied durum wheat genotypes. A significant variation was observed for grain yield, thousand-kernel weight and grain-related morphological characteristics in the studied durum wheat germplasm, which can be considered in the durum wheat breeding program. The results can be used to identify genotypes with high yield and suitable grain characteristics in durum wheat germplasm.
کلیدواژهها [English]