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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
16/07/1998 |
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Data da última atualização: |
20/04/2009 |
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Autoria: |
TOLEDO, J. F. F. de; POONI, H. S.; JINKS, J. L. |
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Afiliação: |
EMBRAPA-CNPSo. Londrina, PR. |
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Título: |
Comparison of the standard predictions with those based on the mid-parental and F1 performance of the single crosses between sister lines. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
In: MEETING OF THE EUCARPIA SECTION BIOMETRICS IN PLANT BREEDING, 6., 1986, Birmingham. Proceedings... Birmingham: University of Birminghan, 1986. p.46-56. |
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Idioma: |
Inglês |
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Conteúdo: |
Practical breeders often associate the mid parental and F1 performance of a cross with its breeding potential and use them as a criteria for selecting crosses for further breeding. The present investigation shows that at best mid parental and F1 means may predict the F means and the overall means of second cycle hybrids but not their variances. Since in theory and in practice both statistics are necessary to make reliable predictions (Jinks and Pooni, 1976; Toledo et al., 1984a) meither the mid parental nor F1 mean is a good predictor of the breeding potential of a cross. Selection based upon these predictors is at best only partially effective and at worst completely ineffective. Thus the predictors of Jinks and Pooni (1976) and Toledo et al. (1984a) are the only reliable ones available. |
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Palavras-Chave: |
Genetica de planta. |
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Thesagro: |
Melhoramento. |
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Thesaurus Nal: |
breeding; plant genetics. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01500naa a2200193 a 4500
001 1444488
005 2009-04-20
008 1986 bl --- 0-- u #d
100 1 $aTOLEDO, J. F. F. de
245 $aComparison of the standard predictions with those based on the mid-parental and F1 performance of the single crosses between sister lines.
260 $c1986
520 $aPractical breeders often associate the mid parental and F1 performance of a cross with its breeding potential and use them as a criteria for selecting crosses for further breeding. The present investigation shows that at best mid parental and F1 means may predict the F means and the overall means of second cycle hybrids but not their variances. Since in theory and in practice both statistics are necessary to make reliable predictions (Jinks and Pooni, 1976; Toledo et al., 1984a) meither the mid parental nor F1 mean is a good predictor of the breeding potential of a cross. Selection based upon these predictors is at best only partially effective and at worst completely ineffective. Thus the predictors of Jinks and Pooni (1976) and Toledo et al. (1984a) are the only reliable ones available.
650 $abreeding
650 $aplant genetics
650 $aMelhoramento
653 $aGenetica de planta
700 1 $aPOONI, H. S.
700 1 $aJINKS, J. L.
773 $tIn: MEETING OF THE EUCARPIA SECTION BIOMETRICS IN PLANT BREEDING, 6., 1986, Birmingham. Proceedings... Birmingham: University of Birminghan, 1986. p.46-56.
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Embrapa Soja (CNPSO) |
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