Rank correlation among different statistical models in ranking of winter wheat genotypes'

作     者：Mozaffar Roostaei Reza Mohammadi Ahmed Amri 

作者机构：Dryland Agricultural Research Institute (DARI) International Center for Agricultural Research in the Dry Areas (ICARDA) 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2014年第2卷第Z1期

页      面：154-163页

学科分类：0710[理学-生物学] 09[农学] 0901[农学-作物学] 0902[农学-园艺学] 

基　　金：the bread wheat project of the Dryland Agricultural Research Institute (DARI) supported by the Agricultural Research and Education Organization (AREO) of Iran 

主　　题：GE interaction Statistical models Rank correlation Winter wheat 

摘      要：Several statistical methods have been developed for analyzing genotype×environment(GE)interactions in crop breeding programs to identify genotypes with high yield and stability *** statistical methods,including joint regression analysis(JRA),additive mean effects and multiplicative interaction(AMMI)analysis,genotype plus GE interaction(GGE)biplot analysis,and yield–stability(YSi)statistic were used to evaluate GE interaction in20 winter wheat genotypes grown in 24 environments in *** main objective was to evaluate the rank correlations among the four statistical methods in genotype rankings for yield,stability and yield–*** kinds of genotypic ranks(yield ranks,stability ranks,and yield–stability ranks)were determined with each *** results indicated the presence of GE interaction,suggesting the need for stability *** respect to yield,the genotype rankings by the GGE biplot and AMMI analysis were significantly correlated(P0.01).For stability ranking,the rank correlations ranged from 0.53(GGE–YSi;P0.05)to0.97(JRA–YSi;P0.01).AMMI distance(AMMID)was highly correlated(P0.01)with variance of regression deviation(S2di)in JRA(r=0.83)and Shukla stability variance(σ2)in YSi(r=0.86),indicating that these stability indices can be used *** correlation was found between yield ranks and stability ranks(AMMID,S2di,σ2,and GGE stability index),indicating that they measure static stability and accordingly could be used if selection is based primarily on *** yield–stability,rank correlation coefficients among the statistical methods varied from 0.64(JRA–YSi;P0.01)to 0.89(AMMI–YSi;P0.01),indicating that AMMI and YSi were closely associated in the genotype ranking for integrating yield with stability *** on the results,it can be concluded that YSi was closely correlated with(i)JRA in ranking genotypes for stability and(ii)AMMI for integrating yield and stability.