EVALUATION OF PHENOTYPIC STABILITY IN BREAD WHEAT ACCESSIONS USING PARAMETRIC AND NON-PARAMETRIC METHODS
A. Yaghotipoor1, E. Farshadfar2* and M. Saeidi3
Campus of Agriculture, Razi University Kermanshah Iran
2*Corresponding Author: e_farshadfar@yahoo.com
ABSTRACT
In order to compare parametric and nonparametric stability measures, and to identify high-yield and stable bread wheat genotypes, 20 accessions were grown in a randomized complete block design with 3 replications under 6 irrigated and dryland conditions. Combined analysis of variance (ANOVA) and Bredenkamp test indicated the presence of significant genotype ×environment interactions. Parametric and non- parametric stability statistics introduced genotypes: G13, G15 and G18 as the most stable. The statistics , bi,  and  were desirable for the simultaneous selection of yield and stability. Spearman's rank correlation indicated that most non-parametric measures were significantly (P<0.01) inter-correlated with parametric measures and therefore can be used as alternatives.
Key words: Bread wheat, GE interaction, parametric and non-parametric measures, stability.
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