investigation of genotype and environment interaction and cluster analysis for seed yield in different lines of faba bean (vicia faba l.)

eight faba bean genotypes and one local (barkat) as control were evaluated for three successive years (2000-2003) in a randomized complete block design (rcbd) with four replications at gorgan agricultural research station. this study was carried out to determine the morphological traits, yield components and yield stability to select the best genotypes. simple and combined analysis of variance showed a significant difference (p<0.01) for grain yield among genotypes and genotype × year interaction. in order to determine the stable lines, stability analysis was done using parametric and non-parametric methods. result of environmental variance revealed that the genotype number 8 had the highest stability. based on coefficient of variation (cv) genotypes number 5 and 8 had the highest stability, respectively. based on non-parametric methods, average, variance and standard deviation of rank, genotypes number 5 and 8 had also the highest stability. results of variance and stability and also cluster analysis revealed that genotypes number 5 and 8 had the highest stability and grain yield in different years. these genotypes performed better than local control (barkat). results suggest that these genotypes are suitable for gorgan region.