Stability Analysis and Selection of Salinity Tolerant barley Genotypes

The objectives of this study were to analyze genotype by environment (GE) interactions effects on the yield of barley lines and varieties, identifying salinity tolerant genotypes with stable yield and also evaluating genotype (G), environments (E) and GE interactions using different stability parameters. The research was set up as two Randomized Complete Block design with three replications at the agriculture research station of Neishabur, Khorasan razavi, during 2013-2015. Each experiment included 17 barley varieties and promising lines. According to Eberhart and Russell stability parameters, genotypes Fajre30, Nik and MBS82-4 had general adaptation. Genotypes Fajre30, Nik, Rihan, Valfajr, MBS82-5 and Mbs87-12 were selected by Simultaneous selection for yield and yield stability (YSi) method. The results of AMMI analysis for seed yield indicated that the Genotype (G) main effects, environment (E), and GE interactions as well as two first interaction principal components (IPCA1-2) were significant. AMMI biplot was able to distinguish stable genotypes and environments with high discrimination ability from low ones. According to the AMMI analysis, genotypes MBS87-12 and Fajre30, with seed yield higher than grand mean, were the most stable genotypes and with high specific adaptation to the saline environment.