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| 10. |  | LOPES, M. T. G.; VIANA, J. M. S.; LOPES, R. Adaptabilidade e estabilidade de híbridos de famílias endogâmicas de milho, obtidos pelo método dos híbridos crípticos. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 36, n. 3, p. 483-91, mar. 2001 Título em inglês: Adaptability and stability patterns in endogamic hybrid maize families, obtained by the cryptic hybrids method.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 20. | | SANTOS, J. F. dos; VIANA, J. M. S.; VILARINHO, A. A.; CÂMARA, T. M. M. Efficiency of S2 progeny selection strategies in popcorn. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 4, n. 2, p. 183-191, June 2004.| Biblioteca(s): Embrapa Arroz e Feijão; Embrapa Hortaliças. |
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| Registros recuperados : 74 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
19/07/2018 |
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Data da última atualização: |
19/07/2018 |
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Autoria: |
VIANA, J. M. S. |
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Afiliação: |
José Marcelo Soriano Viana, Universidade Federal de Viçosa - UFV/Departamento de Biologia Geral. |
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Título: |
Breeding strategies for recurrent selection of maize. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 42, n. 10, p. 1383-1391, out. 2007 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Estratégias de melhoramento para seleção recorrente com milho. |
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Conteúdo: |
The objectives of this work were to analyze theoretical genetic gains of maize due to recurrent selection among full-sib and half-sib families, obtained by Design I, Full-Sib Design and Half-Sib Design, and genotypic variability and gene loss with long term selection. The designs were evaluated by simulation, based on average estimated gains after ten selection cycles. The simulation process was based on seven gene systems with ten genes (with distinct degrees of dominance), three population classes (with different gene frequencies), under three environmental conditions (heritability values), and four selection strategies. Each combination was repeated ten times, amounting to 25, 200 simulations. Full-sib selection is generally more efficient than half-sib selection, mainly with favorable dominant genes. The use of full-sib families derived by Design I is generally more efficient than using progenies obtained by Full-Sib Design. Using Design I with 50 males and 200 females (effective size of 160) did not result in improved populations with minimum genotypic variability. In the populations with lower effective size (160 and 400) the loss of favorable genes was restricted to recessive genes with reduced frequencies. |
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Palavras-Chave: |
Delineamento I; Design I; Família de irmão completo; Família de meio-irmão; Full-sib families; Ganho genético; Half-sib families; Seleção em tandem. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/180006/1/Breeding-strategies-for-recurrent-selection.pdf
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Marc: |
LEADER 01980naa a2200229 a 4500
001 2093412
005 2018-07-19
008 2007 bl uuuu u00u1 u #d
100 1 $aVIANA, J. M. S.
245 $aBreeding strategies for recurrent selection of maize.
260 $c2007
500 $aTítulo em português: Estratégias de melhoramento para seleção recorrente com milho.
520 $aThe objectives of this work were to analyze theoretical genetic gains of maize due to recurrent selection among full-sib and half-sib families, obtained by Design I, Full-Sib Design and Half-Sib Design, and genotypic variability and gene loss with long term selection. The designs were evaluated by simulation, based on average estimated gains after ten selection cycles. The simulation process was based on seven gene systems with ten genes (with distinct degrees of dominance), three population classes (with different gene frequencies), under three environmental conditions (heritability values), and four selection strategies. Each combination was repeated ten times, amounting to 25, 200 simulations. Full-sib selection is generally more efficient than half-sib selection, mainly with favorable dominant genes. The use of full-sib families derived by Design I is generally more efficient than using progenies obtained by Full-Sib Design. Using Design I with 50 males and 200 females (effective size of 160) did not result in improved populations with minimum genotypic variability. In the populations with lower effective size (160 and 400) the loss of favorable genes was restricted to recessive genes with reduced frequencies.
653 $aDelineamento I
653 $aDesign I
653 $aFamília de irmão completo
653 $aFamília de meio-irmão
653 $aFull-sib families
653 $aGanho genético
653 $aHalf-sib families
653 $aSeleção em tandem
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 42, n. 10, p. 1383-1391, out. 2007
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Embrapa Unidades Centrais (AI-SEDE) |
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