Grain yield stability analysis and genotype-environment interaction study in sunflower (Helianthus annuus L.) cultivars

Stability analysis and genotype by environment interactions for production and release of varieties is very important. For this purpose, twelve genotypes of sunflower in five stations including Arak, Birjand, Shiraz, Kashmar and Karaj base randomized complete block design with three replications during 1394 were planting and evaluated. After analysis of variance and significant yield effects of environment and genotype by environment interaction, for stability analysis from univariate methods based analysis of variance and regression analysis were used. Based on the Shukla stability variance statistics and Rick ecovalance, Favorit and Progress genotypes had higher stability. Francis and Kananberg environmental coefficient variation, the Lin and Binns variance and Romer environmental variance showed that Master and Sor genotypes had higher performance than the average and had the higher stability than other genotypes. According to Eberhart and Russell, Master and Sor genotypes with high yield and nonsignificant regression coefficients were identified as stable genotypes for all areas. Zargol genotypes with high performance and a significant regression coefficient that suggests high genotype-environment interaction in this genotype and were the reason for the specific adaptation of this genotype with adequate environment, and with better conditions shows high performance.