بررسی تنوع ژنتیکی برخی صفات زراعی و اجزای عملکرد در جمعیت های F2 حاصل از تلاقی در گیاه بزرک (Linum usitatissimum L.)

The oil of regular flax (Linum usitatissimum L.) genotypes is used as drying oil in different industries, because of its unique fatty acid profile and having high linolenic acid content (52%). However, the oil of its new genotypes that were produced by mutation programs can be used as edible oil. In this study, a randomized complete block design with three replications was used to evaluate eight F2- populations of flax produced from hybridization between some genotypes of this plant species, with the aim of investigating genetic variation for some agronomic traits and yield components of branches per plant, capsules per plan, 100-seeds weight and seed yield per plant. The results showed that there were significant differences among the F2-populations for most of the studied traits. The mean of days to emergence for the populations ranged from 9 to 11 days and the mean of days to flowering and maturity varied from 54 to 63 and from 88 to 101.6 days, respectively. The range of seed yield per plant in the populations was 0.45 to 1.31g. The results of regression analysis showed that number of capsules per plant had the most effect on seed yield per plant and contributed in 89 % of its variation.