Abstract
The aim of this study was to compare some stability analyses methods as additive main effect and the multiplicative interaction analysis (AMMI), Eberhart-Russel regression, cultivar superiority (Pi), ecovalence (Wi), and stability variance analysis in classification of dry matter (DM) yield in 38 sainfoin (Onobrychis sativa L.) genotypes across five environments of Iran over 2 years (2010 and 2011). Results of combined analysis of variance showed significant differences effects of genotypes, environments, and genotype × environment interaction. In comparison among various stability methods results showed that five of the 38 tested genotypes as 3 (Sarab), 8 (Khomin), 24 (Khonsar), 37 (Divandara) and 38 (Songor) with average values of 7.18 to 7.85 t had high and stable DM yield and wide-general adaptability. Other tested cultivars had unstable yield and narrow (specific) adaptability.
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