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| Registros recuperados : 92 | |
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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
19/02/2008 |
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Data da última atualização: |
13/04/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
-- - -- |
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Autoria: |
NUNES, J. A. R.; MORETO, A. L.; RAMALHO, M. A. P. |
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Afiliação: |
Epagri |
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Título: |
Using genealogy to improve selection efficiency of pedigree method. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 65, n. 1, p. 25-30, jan./fev. 2008. |
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Idioma: |
Inglês |
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Conteúdo: |
In the pedigree method of conducting an autogamous population of segregating plants,
the genealogy of the progenies is registered. Although labor-intensive, these data are rarely used. One possibility of exploiting this information is to improve selection efficiency using BLUP (Best Linear Unbiased Prediction). In this study BLUP with genealogy inclusion was compared to the mean in the progenies evaluation conducted by the pedigree method. Progenies of crosses of the common bean lines BRS MG Talismã and BRS Valente in F4:6 and F4:7 were used. The 256 F4:6 progenies were sown in February 2005, in southeast of Brazil, in a 16x16 simple lattice design. The grain yield data were subjected to BLUP analysis with inclusion of genealogy. Based on this analysis and the mean, the 30 progenies with best and worst performance were selected. These 60 F4:7 progenies were classified in relation to the origin, i.e., selected by BLUP, mean, or BLUP and mean and coincident results were obtained. In the selection for best performance, the efficiency of BLUP was 2.4% higher than the mean. In the selection for the opposite extreme, BLUP analysis was however not advantageous. The progenies x environments interaction indicates the need for an evaluation of the progenies in different environments before beginning selection.
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Palavras-Chave: |
BLUP; Feijao; Genetica quantitativa; Herdabilidade; Melhoramento; Metodo de selecao. |
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Categoria do assunto: |
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Marc: |
LEADER 01923naa a2200217 a 4500
001 1057500
005 2011-04-13
008 2008 bl uuuu u00u1 u #d
100 1 $aNUNES, J. A. R.
245 $aUsing genealogy to improve selection efficiency of pedigree method.
260 $c2008
520 $aIn the pedigree method of conducting an autogamous population of segregating plants, the genealogy of the progenies is registered. Although labor-intensive, these data are rarely used. One possibility of exploiting this information is to improve selection efficiency using BLUP (Best Linear Unbiased Prediction). In this study BLUP with genealogy inclusion was compared to the mean in the progenies evaluation conducted by the pedigree method. Progenies of crosses of the common bean lines BRS MG Talismã and BRS Valente in F4:6 and F4:7 were used. The 256 F4:6 progenies were sown in February 2005, in southeast of Brazil, in a 16x16 simple lattice design. The grain yield data were subjected to BLUP analysis with inclusion of genealogy. Based on this analysis and the mean, the 30 progenies with best and worst performance were selected. These 60 F4:7 progenies were classified in relation to the origin, i.e., selected by BLUP, mean, or BLUP and mean and coincident results were obtained. In the selection for best performance, the efficiency of BLUP was 2.4% higher than the mean. In the selection for the opposite extreme, BLUP analysis was however not advantageous. The progenies x environments interaction indicates the need for an evaluation of the progenies in different environments before beginning selection.
653 $aBLUP
653 $aFeijao
653 $aGenetica quantitativa
653 $aHerdabilidade
653 $aMelhoramento
653 $aMetodo de selecao
700 1 $aMORETO, A. L.
700 1 $aRAMALHO, M. A. P.
773 $tScientia Agricola, Piracicaba$gv. 65, n. 1, p. 25-30, jan./fev. 2008.
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