Methods of adaptability and stability analysis in irrigated rice genotypes in Minas Gerais, Brazil

Abstract

The objective of this study was to compare different estimation methods of adaptability and stability in nine genotypes of irrigated rice. The experiment was conducted at three sites in the state of Minas Gerais in the growing seasons from 2000/2001 to 2005/2006, totaling 11 environments. The adaptability and stability were analyzed by the methods proposed by Eberhart and Russel (1966), Cruz et al. (1989), Carneiro (1998) and Annicchiarico (1992). The methods proposed by Carneiro (1998) and by Annicchiarico (1992) were more satisfactory due to the measure of behavioral adaptability and stability, which combined adaptation, adaptability and stability concepts in just one parameter. General adaptability was observed in the lines CNAi 8872 and CNAi 8874 and specific adaptability to favorable conditions in cultivar Rio Grande.