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Value for cultivation and use of upland rice cultivars tested in multi-environments

Data from 11 years of a breeding program for upland rice of the partner institutions Embrapa arroz e feijão, Epamig and UFLA conducted in 11 regions of Minas Gerais, were analyzed by the mixed model methodology. The genotypic correlations between environments ranged from medium to high, suggesting t...

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Bibliographic Details
Published in:Crop breeding and applied biotechnology 2012-03, Vol.12 (1), p.25-33, Article 25
Main Authors: Borges, V, Soares, A.A, Resende, M.D.V. de, Reis, M. de S, Cornelio, V.M. de O, Leite, N.A, Soares, P.C, Costa Júnior, G.T
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Language:English
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Summary:Data from 11 years of a breeding program for upland rice of the partner institutions Embrapa arroz e feijão, Epamig and UFLA conducted in 11 regions of Minas Gerais, were analyzed by the mixed model methodology. The genotypic correlations between environments ranged from medium to high, suggesting the predominance of simple interaction, but with differentiated ranking of genotypes at the different locations. Lines with specific performance, as well as lines of broad adaptation were identified. The performance of cultivar BRSMG Caravera, released in 2007, was superior to the others in terms of grain yield at all sites assessed, in other words, broad adaptation, in addition to a high genotypic performance. Dados de 11 anos do programa de melhoramento de arroz de terras altas das parceiras Embrapa arroz e feijão, Epamig e UFLA conduzidos em 11 municípios de Minas Gerais, foram analisados via metodologia de modelos mistos. As correlações genotípicas por meio dos ambientes apresentaram magnitudes que oscilaram de média a alta, sugerindo a predominância da interação simples, porém, com ordenamento diferenciado dos genótipos nos vários locais. Houve linhagens de comportamento específico, assim como linhagens de comportamento amplo. O cultivar BRSMG Caravera, lançada em 2007, foi superior aos demais no quesito produtividade de grãos em relação a todos os locais avaliados possuindo comportamento amplo além de alto desempenho genotípico.
ISSN:1518-7853
1984-7033
1984-7033
DOI:10.1590/S1984-70332012000100004