Comparison of parametric and non-parametric methods for selecting stable and adapted durum wheat genotypes in variable environments

被引:135
作者
Mohammadi, Reza [1 ]
Amri, Ahmed [2 ]
机构
[1] DARI, Kermanshah, Iran
[2] ICARDA, Aleppo, Syria
关键词
durum wheat; GE interaction; parametric and non-parametric measures; dynamic and static stability; adaptability;
D O I
10.1007/s10681-007-9600-6
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Twenty parametric and non-parametric measures derived from grain yield of 15 advanced durum genotypes evaluated across 12 variable environments during the 2004-2006 growing seasons were used to assess performance stability and adaptability of the genotypes and to study interrelationship among these measures. The combined ANOVA and the non-parametric tests of Genotype x environment interaction indicated the presence of significant crossover and non-crossover interactions, and of significant differences among genotypes. Principal component analysis based on the rank correlation matrix indicated that most non-parametric measures were significantly inter-correlated with parametric measures and therefore can be used as alternatives. The results also revealed that stability measures can be classified into three groups based on static and dynamic concepts of stability. The group related to the dynamic concept and strongly correlated with mean grain yield of stability included the parameters of TOP (proportion of environments in which a genotype ranked in the top third), superiority index (P-i) and geometric adaptability index. The second group reflecting the concept of static stability included, Wricke's ecovalence, the variance in regression deviation (S-di(2)), AMMI stability value, the Huehn's parameters [S-i((1)), S-i((2))], Tennarasua's parameter [NPi(1)], Kang's parameter ( RS) and yield reliability index (I-i) which were not correlated with mean grain yield. The third group influenced simultaneously by grain yield and stability included the measures S-i((3)), S-i((6)), NPi(2), NPi(3), environmental variance (S-xi(2)), coefficient of variability and coefficient of regression (b(i)). Based on the concept of dynamic stability, genotypes G6, G4, and G3 were found to be the most adapted to favorable environments, whereas genotypes G8, G9, and G12 were more stable and are related to the concept of static stability.
引用
收藏
页码:419 / 432
页数:14
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