Selection of common bean genotypes for the cerrado/pantanal ecotone via mixed models and multivariate analysis

Abstract

The common bean, Phaseolus vulgaris, is predominantly grown on small farms and lacks accurate genotype recommendations for specific micro-regions in Brazil. This contributes to a low national average yield. The aim of this study was to use the methods of the harmonic mean of the relative performance of genetic values (HMRPGV) and the centroid, for selecting common bean genotypes with high yield, adaptability, and stability for the Cerrado/Pantanal ecotone region in Brazil. We evaluated 11 common bean genotypes in three trials carried out in the dry season in Aquidauana in 2013, 2014, and 2015. likelihood ratio test detected a significant interaction between genotypx year, contributing 54% to the total phenotypic variation in graiyield. The three genotypes selected by the joint analysis of genotypvalues in all years (Carioca Precoce, BRS Notável, and CNFC 15875were the same as those recommended by the HMRPGV method. Usinthe centroid method, genotypes BRS Notável and CNFC 15875 werconsidered ideal genotypes based on their high stability to unfavorabenvironments and high responsiveness to environmental improvemen We identified a high association between the methods of adaptabilitand stability used in this study. However, the use of centroid methoprovided a more accurate and precise recommendation of the behavioof the evaluated genotypes.