بررسی پایداری لاینهای گلرنگ پاییزه تحت شرایط دیم در مناطق معتدل سرد کشور

To evaluate the agronomic characteristics of 19 safflower genotypes, a field experiment was conducted based on randomized complete block design with three replications under rainfed conditions in fall planting at the Shirvan-Khorasan, Sararood-Kermanshah and Sarab changahi-Khoramabad stations during 2010-2011. Combined analysis of variance was performed assuming genotype effect as fixed, environment effect as random factor. The results of combined analysis of variance showed that there were significant differences (P<0.01) among environment and interaction effects for seed yield. The analysis of data from safflower trials showed that 70.49% of the total sum of squares was attributable to environmental effects, 4.53% to genotypic effects, and 13.69% to G  E interaction effects. The highest seed yield was belong to genotypes PI237550 (795 Kg/ha), PI251268 (765 Kg/ha) and PI250202 (753 Kg/ha). Yield stability analysis was done for safflower genotypes by GGE biplot method. Simultaneous selection for yield and stability using GGE distance ( i GGED ) indicated that genotype no. 1 (PI 237550), 5 (PI 251268) and 2 (PI 239041) were the most desirable genotypes across environments.