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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
21/05/2009 |
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Data da última atualização: |
01/12/2010 |
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Autoria: |
OLIVEIRA, J. P. de; CHAVES, L. J.; DUARTE, J. B.; RIBEIRTO, K. de O.; BRASIL, E. M. |
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Afiliação: |
JAISON PEREIRA DE OLIVEIRA, UFG; LÁZARO JOSÉ CHAVES, UFG; JOÃO BATISTA DUARTE, UFG; KEYLA DE OLIVEIRA RIBEIRO, UFG; EDWARD MADUREIRA BRASIL, UFG. |
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Título: |
Heterosis for oil content in maize populations and hybrids of high quality protein. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Crop breeding and applied biotechnology, Londrina, v. 6, n. 2, p. 113-120, June 2006. |
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Idioma: |
Inglês |
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Conteúdo: |
This study aimed to evaluate QPM populations and their crosses for grain oil content to determine the heterosis and its components. Ninety-six-hybrids and their 21 parents were analyzed and separated in the groups dent and flint, in the partial diallelic/diallel intergroup scheme. The oil content was extracted from dry matter by the Soxlet method in three replicates for each genotypic material and attained mean values of 5.04g 100g-1 and 4.78g 100g-1, respectively, in the groups dent and flint. Among the hybrid crosses, CMS 456 x CMS 463 (6.84g 100g-1) presented the highest value. Although the average heterosis (-9.83%) indicates average dominance of the alleles for low oil content, combinations with positive total heterosis were observed. In this sense, the best populations under the focus of improvement for high oil content were ZQP 101 and ZQP 103, both of the dent group, and CMS52, CMS455c and CMS465 of the flint group. Hence, it was concluded that there is genetic variability and significant heterosis in the genotypes under study. |
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Palavras-Chave: |
Dialelo; Heterose; QPM; Qualidade nutricional; Teor de óleo. |
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Thesagro: |
Agricultura; Biotecnologia; Genética; Milho. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 01816naa a2200277 a 4500
001 1048958
005 2010-12-01
008 2006 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, J. P. de
245 $aHeterosis for oil content in maize populations and hybrids of high quality protein.
260 $c2006
520 $aThis study aimed to evaluate QPM populations and their crosses for grain oil content to determine the heterosis and its components. Ninety-six-hybrids and their 21 parents were analyzed and separated in the groups dent and flint, in the partial diallelic/diallel intergroup scheme. The oil content was extracted from dry matter by the Soxlet method in three replicates for each genotypic material and attained mean values of 5.04g 100g-1 and 4.78g 100g-1, respectively, in the groups dent and flint. Among the hybrid crosses, CMS 456 x CMS 463 (6.84g 100g-1) presented the highest value. Although the average heterosis (-9.83%) indicates average dominance of the alleles for low oil content, combinations with positive total heterosis were observed. In this sense, the best populations under the focus of improvement for high oil content were ZQP 101 and ZQP 103, both of the dent group, and CMS52, CMS455c and CMS465 of the flint group. Hence, it was concluded that there is genetic variability and significant heterosis in the genotypes under study.
650 $aAgricultura
650 $aBiotecnologia
650 $aGenética
650 $aMilho
653 $aDialelo
653 $aHeterose
653 $aQPM
653 $aQualidade nutricional
653 $aTeor de óleo
700 1 $aCHAVES, L. J.
700 1 $aDUARTE, J. B.
700 1 $aRIBEIRTO, K. de O.
700 1 $aBRASIL, E. M.
773 $tCrop breeding and applied biotechnology, Londrina$gv. 6, n. 2, p. 113-120, June 2006.
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Embrapa Agricultura Digital (CNPTIA) |
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| 1. |  | PINTO, A. C. de Q.; FALEIRO, F. G.; ANDRADE, S. R. M. D.; ANJOS, J. D. R. N. D.; JUNQUEIRA, N. T. V.; RAMOS, V. H. V.; BRAGA, M. F.; ROSSETTO, C. J.; SOUZA, V. A. B. D.; COSTA, J. G. D.; SCANAVACA JUNIOR, L. S.; DIAS, J. N. Melhoramento genético da mangueira em ambiente tropical por meio da hibridação intervarietal e com auxílio de marcadores moleculares. In: ANDRADE, S. R. M. de; FALEIRO, F.G.; SERENO, J. R. B.; CORTE, J. L. D.; SOUSA, E. dos S. de (Ed.). Resultados de pesquisa para o cerrado: 2004-2005. Planltina: Embrapa Cerrados, 2007. p.27-36.| Tipo: Capítulo em Livro Técnico-Científico |
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