بررسی اثر متقابل ژنوتیپ x محیط برای عملکرد دانه ژنوتیپهای امیدبخش جو در اقلیم گرم کشور با استفاده از مدل AMMI

In order to determine the yield stability and genotype × environment interactions, 20 barley promising lines/varieties including two local controls (Nimrroz/Sahra and EBYTW-84-18) were evaluated in years 2007-2009. Experiment was conducted using randomized complete block design with four replications in five stations in the warm regions of Iran including Ahwaz , Zabol , Gonbad , Moghan, and Darab. Combined analysis of variance showed significant differences of the grain yield among year × location, genotype × location and genotype × location × year interaction effects. Mean comparisons of yield among genotypes using Duncan multiple range test showed that genotypes No. 4, 17, 3 and 14 with grain yields of 5.098, 5.004, 4.908 and 4.896 t/ha, respectively, had the highest yields among genotypes tested. Since the genotype × location × year interaction effect was significant, AMMI stability method was employed to examine the effects of genotype × environment interaction and to determine adaptation of the genotype in details. In total, genotypes No. 3 (EBYTW86-3), 4 (EBYTW86-4) and 17 (EBYTW86-17) were the most stable genotypes and were recommended to be released in the warm regions of Iran.