بررسی روابط صفات کمی در لاین‌های پیشرفته کنجد

Fourteen sesame lines that have preferred in primary evaluation, with local mass of Birjand (as test) and Ooltan cultivar (as overall test) were compared for two years in completely block design with 4 replication. Traits measured in this study were germination percent, number of flower per axis, number of sub branch, capsule length, plant height, number of capsules per plant, height of first capsule, height of branching, flowering branch height, flowering capsule height/plant, growth period, 1000 grain weight, total grain yield. 1000 grain weight was positively and significantly correlated with plant height (r=0.697, P<0.01). Cluster analysis based agro-morphological traits and by using ward method resulted in 3 distinct groups. Group 2 which consists of local mass of Birjand, Ooltan cultivar, line 11 and line 12 was superior group in view of majority of trait means. This group had most distance from 2 other groups. Principle component analysis suggest that 4 first component have Eigen values more than 1 and these components explain 76.42% total variation of lines and cultivars. In first principle component coefficients of number of sub branch and 1000 grain weight and in second principle component coefficients of germination percent and total grain yield were higher. Thus these traits should be notice in next breeding programs. Classification based on mentioned traits suggest that for sesame cultivation in south Khorasan, local mass of Birjand is better than other lines due to superiority in terms of mentioned characters.