كليدواژه :
كشاورزي , تنوع ژنتيكي , توده هاي بومي , خصوصيات زراعي , Land races , گلرنگ , Genetic variation , Safflower , Agronomic characteristics
چكيده لاتين :
To study the genetic variation and yield potential of some indigenous safflower land races, an experiment was conducted at the research farm of Isfahan University of Technology, in 1999-2000. The experiment was arranged in a randomized complete block design with four replications in which the treatments were seven safflower land races including three from Isfahan province, and the rest from Khorasan, Markazi, Hamadan, and Kordistan provinces. The results showed that there were highly significant differences among land races for days to flowering and maturity, branches per plant, plant height, head weight per plant, seeds per head, 100-seed weight, head diameter, hull and oil percent and seed yield. However, differences for heads per plant and seed yield per plant were not significant. The highest phenotypic and genotypic coefficients of variation were obtained for seed yield per plant and seed yield per plot, respectively. However, the lowest coefficients of variation were belonged to days to maturity. Within populations, the highest variation was observed for seed yield per plant and heads per plant, and the lowest one was obtained for days to maturity. Seed yield per plant followed by seeds per head had the greatest phenotypic and genotypic correlation with seed yield, but both heads per plant and seeds per head had the greatest correlation with seed yield per plant. The path analysis showed that the seeds per head had the highest, positive and direct genetic effects on seed yield. However, heads per plant and seeds per head had the most positive and direct effects on yield per plant.
