Genotype × Environment Interaction Analysis for Grain Yield of Durum Wheat New Genotypes in the Moderate Region of Iran Using AMMI Model

8 Abstract: To determine stability and different reactions of durum wheat promising genotypes in the moderate region of Iran, 18 durum wheat genotypes were evaluated in Karaj, Varamin, Isfahan, Neishabour, Kermanshah and Gonbad, along with commercial bread wheat and Dena cultivars as control cultivars. The study conducted based on randomized complete block design (RCBD), with three replications in two consecutive years (2008-2010). To evaluate the genotype × environment interaction and to identify the stable genotypes, analysis of stability was performed. In this study, some stability parameters such as the new parameter AMMI Stability Value (ASV) and multivariate and graphical method of AMMI were studied. According to the results of ASV, genotype 13 was identified to be a superior and promising in term of yield stability (7.454 ton per hectare) and was found adaptable genotype. Moreover, in AMMI biplot, genotypes 17, 11, 13 and 15 had the least interaction and genotypes 11 and 13 with the most amount of yield were shown to have high general adaptability and were selected.