Abstract:
The stability of ten winter safflower cultivars and lines was evaluated in three different
environmental conditions in Karaj, Isfahan and Darab in Iran, a randomized complete
block design with 4 replications over three years (1995, 1996 and 1997). Simple analysis of
variances of grain and oil yields from each experiment showed significant differences
among the genotypes. After conducting a homogeneity test for error variances, combined
analysis of variance was performed. An F. test of different sources of variation revealed
that the effect of genotype × year × location interactions was significant (P<1%). Analysis
of the grain and oil yields using the Eberhart and Russel method showed significant difference
for the main effects of genotype and genotype × environment (linear) interactions
and non-significant difference for deviation from regression. According to the classification
of genotypes based on the mean of grain and oil yields, coefficient of regression and
deviation from regression, the new line L.R.V.51.51 with its high grain and oil yields and
stability was selected as a desirable genotype.
