The purpose of this study was to evaluate the phenotypic adaptability and stability for grain yield of soybean genotypes by the method of Annicchiarico and the Integrated Method of adaptability and stability analysis and to identify the genotypes with best performance under environmental variations. The agronomic performance of semilate and late genotypes maturing, was evaluated in the final evaluation trials of the Program of Soybean Genetic Improvement of the UFV, in Viçosa, Florestal and São Gotardo, State of Minas Gerais, in the 2006/2007 and 2007/2008 growing seasons. All field experiments were arranged in a complete randomized block design with 14 treatments and three replications. Line CS 02736 and cultivar UFV TN 105 were classified as adapted to favorable environments, whereas the performance was medium even in unfavorable environments, according to the Integrated Method of adaptability and stability analysis. Yield adaptability and stability of cultivar Monarca were classified as high by the method of Annicchiarico and by the Integrated Method of adaptability and stability analysis.
Glycine max; grain yield; genotypes x environments interaction
