Stability analysis of rice genotypes based GGE biplot method in north of Iran

Abstract

The aim of this study was to identify the best rice genotypes with high stability and adaptability by GGE biplot method based on grain yield. We use of the 14 genotypes (12 were lines developed by rice research inistitute of Amol in north of Iran and 2 were controls). These genotypes were evaluated in nine environments (three location and three years) in north of Iran. We used the genotype-environment table for analysis. According to both mean and stability the best genotypes were G12, G14, and G4, respectively. These genotypes had upper performance from than mean. The graphical analysis identified the best genotypes for each environment. The genotype G12 was the best genotype for all locations except three environments. The GGE biplot indicated three mega-environments. In this analysis cultivar G12 and G14 were closest to the ideal genotype.