Evaluation of yield stability of 40 bread wheat (Triticum aestivum L.) genotypes using additive main effects and multiplicative interaction (AMMI)

To evaluate yield stability of 40 bread wheat genotypes, six randomized complete block design with three replications were conducted in three years during 2009 to 2011 in Kerman University, Kerman, Iran, under normal and drought stress conditions. Combine analysis of variance showed that environment, genotype and genotype by environment interaction were highly significant. Analysis of variance of additive main effects and multiplicative interaction (AMMI) showed that five IPCA were highly significant and the sixth IPCA was considered as noise. Five significant IPCAs were used simultaneously using AMMI stability value (ASV). Based on ASV Hirmand, Kavir and Omid, and based on superiority statistics Alvand, Alamoot and Kavir were the most stable cultivars. Kavir had high yield and introduced as the most stable genotype in this study. Shiraz cultivar was the most unstable genotype. Considering average over all environments, Shiraz cultivar had the highest yield. Based on the results of this experiment, Kavir and Shiraz may be considered as parents in breeding program to take advantage of yield potential and stability in the progenies.