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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
23/09/1997 |
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Data da última atualização: |
18/07/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MAGNAVACA, R.; OLIVEIRA, A. C.; MORAIS, A. R.; GAMA, E. E. G.; SANTOS, M. X. dos. |
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Afiliação: |
EMBRAPA/CNPMS; ANTONIO CARLOS DE OLIVEIRA, CNPMS. |
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Título: |
Family hybrid selection on quality protein maize (Zea mays L.). |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
Maydica, Bergamo, v. 34, n. 1, p. 63-71, 1989. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to investigate the possibility of developing high yielding quality protein maize (QPM) family hybrids based on full-sibs derived from CIMMYT QPM populations, that have the opaque-2 gene but normal-appearing yellow kernels. A 5x6 and 10x10 partial diallel of full-sib families plus parents were tested in four locations in Brazil. The 5x6 partial diallel consisted of early cycle flint x dent full-sibs, and the 10x10 consisted of intermediate cycle flint x dent full-sibs. The average heterosis was 33.7% and 28.2% for the early and intermediate crosses, respectively, while high parent heterosis was 60.5% for the best heterotic cross. Average ear weights of full-sib parents collected at the four locations helped in determining the feasability of using the full-sibs for hybrid production. In general, full-sib parents had more environmental interactions than the full-sib corsses. The average difference of parents and crosses had a significant interaction with environment. These results gave the opportunity to select hybrids with a broad or specific adaptation to environments. Superior families for inbred line development were detected, indicating that the objectives of developing high-yielding QPM family hybrids could be met in a short period of time. |
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Palavras-Chave: |
Maize; Protein; QPM; Quality. |
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Thesagro: |
Melhoramento; Milho; Proteína; Qualidade; Zea Mays. |
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Thesaurus Nal: |
breeding. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02021naa a2200289 a 4500
001 1476650
005 2018-07-18
008 1989 bl uuuu u00u1 u #d
100 1 $aMAGNAVACA, R.
245 $aFamily hybrid selection on quality protein maize (Zea mays L.).$h[electronic resource]
260 $c1989
520 $aThe objective of this study was to investigate the possibility of developing high yielding quality protein maize (QPM) family hybrids based on full-sibs derived from CIMMYT QPM populations, that have the opaque-2 gene but normal-appearing yellow kernels. A 5x6 and 10x10 partial diallel of full-sib families plus parents were tested in four locations in Brazil. The 5x6 partial diallel consisted of early cycle flint x dent full-sibs, and the 10x10 consisted of intermediate cycle flint x dent full-sibs. The average heterosis was 33.7% and 28.2% for the early and intermediate crosses, respectively, while high parent heterosis was 60.5% for the best heterotic cross. Average ear weights of full-sib parents collected at the four locations helped in determining the feasability of using the full-sibs for hybrid production. In general, full-sib parents had more environmental interactions than the full-sib corsses. The average difference of parents and crosses had a significant interaction with environment. These results gave the opportunity to select hybrids with a broad or specific adaptation to environments. Superior families for inbred line development were detected, indicating that the objectives of developing high-yielding QPM family hybrids could be met in a short period of time.
650 $abreeding
650 $aMelhoramento
650 $aMilho
650 $aProteína
650 $aQualidade
650 $aZea Mays
653 $aMaize
653 $aProtein
653 $aQPM
653 $aQuality
700 1 $aOLIVEIRA, A. C.
700 1 $aMORAIS, A. R.
700 1 $aGAMA, E. E. G.
700 1 $aSANTOS, M. X. dos
773 $tMaydica, Bergamo$gv. 34, n. 1, p. 63-71, 1989.
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