“…Several methods have been described to study adaptability and stability-mainly methods based on analysis of variance (Yates and Cochran, 1938;Plaisted and Peterson, 1959;Wricke, 1965;Annicchiarico, 1992), nonparametric analyses (Lin and Binns, 1988;Huehn, 1990;Nascimento et al, 2010), simple linear regression analysis (Theil, 1950;Finlay and Wilkinson, 1963;Eberhart and Russel, 1966;Tai, 1971), bi-segmented regression (Verma et al, 1978;Silva and Barreto, 1985;Cruz et al, 1989;Storck and Vencovsky, 1994), quadratic regression (Brasil and Chaves, 1994), and multivariate analysis, such as the additive main effects and multiplicative interaction analysis (Zobel et al, 1988) and principal components analysis (Crossa, 1990). Also applicable is the ranking method proposed by Kang and Phan (1991), which uses the weights between the parameters of adaptability and phenotype stability of correlated methods and the average of the estimates of the trait analyzed to classify genotypes.…”