Evaluation of Grain Yield and It’s Stability in Barley Promising Lines in Saline Areas

Salinity is one of the most important abiotic stresses that affect crops production in worldwide. In order to investigate of genotype, environment effect and interaction effect of genoytpe×environment on barley grain yield under salinity stress, 18 promising lines with two checks were evaluated at three salinity affected agricultural researche stations include Isfahan, Birjand and Yazd using Randomized Complete Blocks design with three replications for two cropping seasons (2012-2014). Results of combined analysis of variance of grain yield showed that the genotype and year×genotype×environment interaction effect were significant. AMMI model was used to investigate of interaction effect and identify stable genotypes. Analysis of variance of additive main effects and multiplicative interaction (AMMI) showed that four IPCAs were significant and explained 92% of the total yield variation. In the base of results of mean comparison, AMMI stability value and genotype stability value, line No. 8 (L. 527/NK1272//JLB70-63/3/1-BC-80320) introduced as stable line with appropriate grain yield which could be used as new cultivar in salinity affected condition or for using in future breeding program and Khatam cultivar is identified as most unstable genotype.