Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/32731
Título: Bayesian GGE biplot models applied to maize multi-environments trials
Palavras-chave: Additive and multiplicative models
Mega-environments
Biplot
Von Mises-Fisher
Data do documento: 2016
Editor: Fundação de Pesquisas Científicas de Ribeirão Preto
Citação: OLIVEIRA, L. A. de et al. Bayesian GGE biplot models applied to maize multi-environments trials. Genetics and Molecular Research, [S.l.], v. 15, n. 2, 2016.
Resumo: The additive main effects and multiplicative interaction (AMMI) and the genotype main effects and genotype x environment interaction (GGE) models stand out among the linear-bilinear models used in genotype x environment interaction studies. Despite the advantages of their use to describe genotype x environment (AMMI) or genotype and genotype x environment (GGE) interactions, these methods have known limitations that are inherent to fixed effects models, including difficulty in treating variance heterogeneity and missing data. Traditional biplots include no measure of uncertainty regarding the principal components. The present study aimed to apply the Bayesian approach to GGE biplot models and assess the implications for selecting stable and adapted genotypes. Our results demonstrated that the Bayesian approach applied to GGE models with non-informative priors was consistent with the traditional GGE biplot analysis, although the credible region incorporated into the biplot enabled distinguishing, based on probability, the performance of genotypes, and their relationships with the environments in the biplot. Those regions also enabled the identification of groups of genotypes and environments with similar effects in terms of adaptability and stability. The relative position of genotypes and environments in biplots is highly affected by the experimental accuracy. Thus, incorporation of uncertainty in biplots is a key tool for breeders to make decisions regarding stability selection and adaptability and the definition of mega-environments.
URI: https://www.geneticsmr.com/articles/6591
http://repositorio.ufla.br/jspui/handle/1/32731
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