Genotype x environment interaction in common bean yield and yield components

Abstract

This study assessed genotype x environment interaction effects on common bean yield and its components. Sixteen genotypes were evaluated in two agricultural years in two traditional cropping seasons in Rio Grande do Sul state – Brazil. The results obtained showed significant genotype x years interaction, which changed the genotype rank in each evaluation year. Path analysis showed that correlation between yield and its components was modified by the genotype x years interaction. These results suggest that more years of evaluation are necessary to obtain more reliable and useful estimates.