Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/38025
Title: Adaptability and stability of maize varieties using mixed model methodology
Other Titles: Adaptabilidade e estabilidade de cultivares de milho pelo método de modelos mistos
Keywords: Média harmônica da performance relativa de valores genotípicos
Mixed model methodology
Maize - Genetic improvement
Método de modelos mistos
Milho - Melhoramento genético
Issue Date: 2012
Publisher: Brazilian Society of Plant Breeding
Citation: MENDES, F. F. et al. Adaptability and stability of maize varieties using mixed model methodology. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 12, n. 2, p. 111-117, 2012.
Abstract: The objective of this study was to evaluate the performance, adaptability and stability of corn cultivars simultaneously in unbalanced experiments, using the method of harmonic means of the relative performance of genetic values. The grain yield of 45 cultivars, including hybrids and varieties, was evaluated in 49 environments in two growing seasons. In the 2007/2008 growing season, 36 cultivars were evaluated and in 2008/2009 25 cultivars, of which 16 were used in both seasons. Statistical analyses were performed based on mixed models, considering genotypes as random and replications within environments as fixed factors. The experimental precision in the combined analyses was high (accuracy estimates > 92 %). Despite the existence of genotype x environment interaction, hybrids and varieties with high adaptability and stability were identified. Results showed that the method of harmonic means of the relative performance of genetic values is a suitable method for maize breeding programs.
URI: http://repositorio.ufla.br/jspui/handle/1/38025
Appears in Collections:DBI - Artigos publicados em periódicos

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