2010
DOI: 10.1590/s0100-204x2010000100006
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Adaptabilidade e estabilidade via regressão não paramétrica em genótipos de café

Abstract: Resumo -O objetivo deste trabalho foi avaliar uma metodologia de análise de adaptabilidade e estabilidade fenotípica de genótipos de café baseada em regressão não paramétrica. A técnica utilizada difere das demais, pois reduz a infl uência na estimação do parâmetro de adaptabilidade de algum ponto extremo, ocasionado pela presença de genótipos com respostas demasiadamente diferenciadas a determinado ambiente. Foram utilizados dados provenientes de um experimento sobre produtividade média de grãos de 40 genótip… Show more

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Cited by 23 publications
(34 citation statements)
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“…Adaptability and stability parameters of 40 common bean cultivars with carioca grain evaluated in four environments in Minas Gerais, in 2013, based on the criterion of Eberhart and Russell (1966) In addition, the correlation coefficients of these genotypes were high (R 2 > 70%), indicating that much of their total variation can be explained by the adopted model. Regarding this value, Nascimento et al (2010) found that genotypes with R 2 > 70% were highly stable.…”
Section: Resultsmentioning
confidence: 98%
“…Adaptability and stability parameters of 40 common bean cultivars with carioca grain evaluated in four environments in Minas Gerais, in 2013, based on the criterion of Eberhart and Russell (1966) In addition, the correlation coefficients of these genotypes were high (R 2 > 70%), indicating that much of their total variation can be explained by the adopted model. Regarding this value, Nascimento et al (2010) found that genotypes with R 2 > 70% were highly stable.…”
Section: Resultsmentioning
confidence: 98%
“…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.…”
Section: Introductionmentioning
confidence: 99%
“…Nonparametric methods, such as those developed by Lin & Binns (1988), Nascimento et al (2010), centroid (Rocha et al, 2005) and its subsequent developments the multiple centroid (Nascimento et al, 2009a) and the extended centroid (Nascimento et al, 2009b) are also reported.…”
Section: Introductionmentioning
confidence: 99%