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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
27/12/2012 |
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Data da última atualização: |
20/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VIANA, J. M. S.; DELIMA, R. O.; FARIA, V. R.; MUNDIM, G. B.; RESENDE, M. D. V. de; SILVA, F. F. e. |
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Afiliação: |
JOSE MARCELO SORIANO VIANA, UFV; RODRIGO OLIVEIRA DELIMA, UFV; VINÍCIUS RIBEIRO FARIA, UFV; GABRIEL BORGES MUNDIM, UFV; MARCOS DEON VILELA DE RESENDE, CNPF; FABIANO FONSECA E SILVA, UFV. |
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Título: |
Relevance of pedigree, historical data, dominance, and data unbalance for selection efficiency. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Agronomy Journal, v. 104, n. 3, p. 722-728, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to assess the impact of pedigree, historical data, dominance, and data unbalance on the estimation and precision of genetic variances and breeding values and on the selection efficiency in annual crop breeding. Expansion volume and grain yield from 12 trials of inbred progeny and four tests of non-inbred families were used in the analyses. The S1 to S5 progeny trials were designed as incomplete blocks, the S6 progeny trials were designed as complete blocks, and the half- and full-sib family trials were designed as lattices. The half-sib, full-sib, and inbred family models were fitted in across-generation analyses. One complete and four reduced models were used to assess the relevance of pedigree, historical data, and dominance. Simulated plot losses of 30% in the half- and full-sib progeny trials were used to study the influence of data unbalance. All analyses were performed using ASReml. Ignoring pedigree information or ancestor data and simulating plot losses determined relevant biases in estimating the additive and dominance variances, marked reduction in the precision of the predicted breeding values, significant changes in the classification of the breeding values, and errors in identifying superior individuals, i.e., a significant reduction in the selection efficiency. In contrast, excluding dominance had no significant effect on either the ranking of breeding values or selection efficiency. Our results revealed that best linear unbiased prediction including pedigree and historical data, based on a model with dominance, is the ideal method for genetic evaluation by plant breeders even when lost records are considered. MenosThe objective of this study was to assess the impact of pedigree, historical data, dominance, and data unbalance on the estimation and precision of genetic variances and breeding values and on the selection efficiency in annual crop breeding. Expansion volume and grain yield from 12 trials of inbred progeny and four tests of non-inbred families were used in the analyses. The S1 to S5 progeny trials were designed as incomplete blocks, the S6 progeny trials were designed as complete blocks, and the half- and full-sib family trials were designed as lattices. The half-sib, full-sib, and inbred family models were fitted in across-generation analyses. One complete and four reduced models were used to assess the relevance of pedigree, historical data, and dominance. Simulated plot losses of 30% in the half- and full-sib progeny trials were used to study the influence of data unbalance. All analyses were performed using ASReml. Ignoring pedigree information or ancestor data and simulating plot losses determined relevant biases in estimating the additive and dominance variances, marked reduction in the precision of the predicted breeding values, significant changes in the classification of the breeding values, and errors in identifying superior individuals, i.e., a significant reduction in the selection efficiency. In contrast, excluding dominance had no significant effect on either the ranking of breeding values or selection efficiency. Our results revealed that best linear unbiased... Mostrar Tudo |
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Palavras-Chave: |
Cultura anual; Valor genético. |
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Thesagro: |
Estimativa; Seleção Genética. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02358naa a2200229 a 4500
001 1943606
005 2015-02-20
008 2012 bl uuuu u00u1 u #d
100 1 $aVIANA, J. M. S.
245 $aRelevance of pedigree, historical data, dominance, and data unbalance for selection efficiency.$h[electronic resource]
260 $c2012
520 $aThe objective of this study was to assess the impact of pedigree, historical data, dominance, and data unbalance on the estimation and precision of genetic variances and breeding values and on the selection efficiency in annual crop breeding. Expansion volume and grain yield from 12 trials of inbred progeny and four tests of non-inbred families were used in the analyses. The S1 to S5 progeny trials were designed as incomplete blocks, the S6 progeny trials were designed as complete blocks, and the half- and full-sib family trials were designed as lattices. The half-sib, full-sib, and inbred family models were fitted in across-generation analyses. One complete and four reduced models were used to assess the relevance of pedigree, historical data, and dominance. Simulated plot losses of 30% in the half- and full-sib progeny trials were used to study the influence of data unbalance. All analyses were performed using ASReml. Ignoring pedigree information or ancestor data and simulating plot losses determined relevant biases in estimating the additive and dominance variances, marked reduction in the precision of the predicted breeding values, significant changes in the classification of the breeding values, and errors in identifying superior individuals, i.e., a significant reduction in the selection efficiency. In contrast, excluding dominance had no significant effect on either the ranking of breeding values or selection efficiency. Our results revealed that best linear unbiased prediction including pedigree and historical data, based on a model with dominance, is the ideal method for genetic evaluation by plant breeders even when lost records are considered.
650 $aEstimativa
650 $aSeleção Genética
653 $aCultura anual
653 $aValor genético
700 1 $aDELIMA, R. O.
700 1 $aFARIA, V. R.
700 1 $aMUNDIM, G. B.
700 1 $aRESENDE, M. D. V. de
700 1 $aSILVA, F. F. e
773 $tAgronomy Journal$gv. 104, n. 3, p. 722-728, 2012.
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Embrapa Florestas (CNPF) |
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| 4. |  | ANDRADE, A. C. S. de; LOUREIRO, M. B.; SOUZA, A. D. de O.; RAMOS, F. N. Quebra de dormência de sementes de sucupira-preta. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 32, n. 5, p. 465-469, maio 1997. Título em inglês: Dormancy break in bowdichia virgilioides seeds.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 5. | | CARVALHO, L. de A.; ZOCCAL, R.; SOUZA, A. D. de; GOMES, A. T.; LEITE, J. L. B. Agricultura familiar e produção de leite na Zona da Mata de Minas Gerais. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 41., 2004, Campo Grande, MS. Produção animal e a segurança alimentar: anais. Viçosa, MG: Sociedade Brasileira de Zootecnia, 2004.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 6. | | MARTINS, C. E.; CÓSER, A. C.; LEMOS, A. de M.; SOUZA, A. D. de; FRANCO, P. R. V. (ed.). Aspectos técnicos, econômicos, sociais e ambientais da atividade leiteira. Juiz de Fora: Embrapa Gado de Leite, 2005. 172 p. Trabalhos apresentados ao 7 Minas Leite, 2005, Juiz de Fora.| Biblioteca(s): Embrapa Gado de Leite. |
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| 8. | | SANTOS, J. C. dos; SOUZA, A. D. de; CASTRO, A. A. de; KAGEYAMA, P. Y.; BRAGA, R. R.; MENEZES, R. S. de; COSTA, J. S. R. da. Demandas tecnológicas para o sistema produtivo de borracha extrativa (Hevea spp.) no estado do Acre. Rio Branco, AC: Embrapa Acre, 2001. 18 p. (Embrapa Acre. Documentos, 71). Trabalho resultante do projeto Plataforma Tecnológica para o Setor Extrativista do Estado do Acre.| Biblioteca(s): Embrapa Acre. |
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| 9. | | MARTINS, C. E.; CÓSER, A. C.; SOUZA, A. D. de; FRANCO, P. R. V.; MAGALHÃES, F. A. R.; LEMOS, A. de M.; BERNARDO, W. F. (ed.). Tecnologias alternativas para a produção de leite e derivados em bases sustentáveis. Juiz de Fora: Embrapa Gado de Leite, 2004. 142 p. Trabalhos apresentados ao 6 Minas Leite, 2004, Juiz de Fora.| Biblioteca(s): Embrapa Gado de Leite. |
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| 10. | | NUNES, G. H. do S.; C. FILHO, J. H. da; DANTAS, M. S. M.; PAULA, V. F. S. de; SOUZA, A. D. de; TORRES FILHO, J.; SILVA, J. R. da; ARAGÃO, F. A. de S. Divergência genética entre linhagens de melão pele de sapo. Horticultura Brasileira, Brasília, DF, v. 25, n. 1, ago. 2007. s 92. Suplemento. Trabalho apresentado no 47. Congresso Brasileiro de Olericultura, 4. Simpósio Brasileiro sobre Cucurbitáceas, 2007. Porto Seguro. Resumo 498.| Tipo: Resumo em Anais de Congresso | Circulação/Nível: -- - -- |
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