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 | Acesso ao texto completo restrito à biblioteca da Epagri-Sede. Para informações adicionais entre em contato com biblio@epagri.sc.gov.br. |
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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
13/05/2009 |
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Data da última atualização: |
13/05/2009 |
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Autoria: |
BRUEL, D.C.; CARPENTIERI-PÍPOLO; GERAGE, A.C.; FONSECA JÚNIOR, N. da S.; PRETE, C.E.C.; RUAS, C. de F.; RUAS, P.M.; SOUZA, S.G.H. de; GARBUGLIO, D.D. |
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Título: |
Genetic distance estimated by RAPD markers and its relationship with hybrid performance in maize. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v.41, n.10, p.1491-1498, out. 2006. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to evaluate the genetic diversity of 16 maize inbred lines, and to determine the correlation between genetic distance and hybrid performance, using random amplified polymorphic DNA (RAPD) molecular markers. Twenty-two different random primers were used, which resulted in the amplification of 265 fragments, 237 (84.44%) of them being polymorphic. A genetic similarity matrix was created from the RAPD data, using Jaccard coefficient, and a dendrogram was constructed. Hybrid analyses were carried out using random block design and Griffing method VI for diallel crossings. The genetic associations showed five distinct heterotic groups. Correlations between genetic divergences detected by RAPD, as well as the means observed in the diallel crossings were positive and significant for plant height, ear height, prolificacy, and grain weight. The correlation of genetic divergences, detected by RAPD, and the specific combining ability between heterotic group associations, showed significance in all characteristics under study, except prolificacy. A direct relationship between genetic divergence and productivity was found in 79.2% of the 120 hybrids confirming the hypothesis that genetic divergence is directly related to the performance of hybrids and is efficient in predicting it. |
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Palavras-Chave: |
Dialelo; Diallel; Heterotic patterns; Marcador molecular; Milho hibrido; Molecular markers; Padrões heteróticos; Zea mays. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02224naa a2200313 a 4500
001 1063359
005 2009-05-13
008 2006 bl uuuu u00u1 u #d
100 1 $aBRUEL, D.C.
245 $aGenetic distance estimated by RAPD markers and its relationship with hybrid performance in maize.
260 $c2006
520 $aThe objective of this work was to evaluate the genetic diversity of 16 maize inbred lines, and to determine the correlation between genetic distance and hybrid performance, using random amplified polymorphic DNA (RAPD) molecular markers. Twenty-two different random primers were used, which resulted in the amplification of 265 fragments, 237 (84.44%) of them being polymorphic. A genetic similarity matrix was created from the RAPD data, using Jaccard coefficient, and a dendrogram was constructed. Hybrid analyses were carried out using random block design and Griffing method VI for diallel crossings. The genetic associations showed five distinct heterotic groups. Correlations between genetic divergences detected by RAPD, as well as the means observed in the diallel crossings were positive and significant for plant height, ear height, prolificacy, and grain weight. The correlation of genetic divergences, detected by RAPD, and the specific combining ability between heterotic group associations, showed significance in all characteristics under study, except prolificacy. A direct relationship between genetic divergence and productivity was found in 79.2% of the 120 hybrids confirming the hypothesis that genetic divergence is directly related to the performance of hybrids and is efficient in predicting it.
653 $aDialelo
653 $aDiallel
653 $aHeterotic patterns
653 $aMarcador molecular
653 $aMilho hibrido
653 $aMolecular markers
653 $aPadrões heteróticos
653 $aZea mays
700 1 $aCARPENTIERI-PÍPOLO
700 1 $aGERAGE, A.C.
700 1 $aFONSECA JÚNIOR, N. da S.
700 1 $aPRETE, C.E.C.
700 1 $aRUAS, C. de F.
700 1 $aRUAS, P.M.
700 1 $aSOUZA, S.G.H. de
700 1 $aGARBUGLIO, D.D.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv.41, n.10, p.1491-1498, out. 2006.
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