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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte; Embrapa Soja. |
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Data corrente: |
04/09/1996 |
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Data da última atualização: |
15/01/2014 |
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Autoria: |
TOLEDO, J. F. F. de. |
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Título: |
Biometrical studies on inbred lines and their hybrids. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
University of Birminghan, 1986. |
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Páginas: |
139p. |
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Idioma: |
Inglês
Português |
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Notas: |
Tese Doutorado. |
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Conteúdo: |
This thesis is divided into two parts. In the first part a method for prediciting the properties of second cycle hybrids produced by pairwise or diallel crossing of the first cycle recombinant inbred lines is described. Family means and variance of the P1, P2, F1 and F2 generations of a cross are all that is required for making these predictions. The predictions have been tested on two crosses derived from four varieties of Nicotiana rustica, viz. V1xV5 cross and V2xV12 cross. The data, results and discussions involving the V1xV5 cross are presented in three publications annexed as appendices, A, B and C at the end of the thesis. Results of the experiments conducted on the V2xV12 cross are discussed in detail in this part oh the thesis. The data collected from the basic generations (P1, P2, F1, F2, B1 and B2) of the V2xV12 cross raised in three environments were used for making the predictions and the F1 families of a 30x30 diallel produced from a random sample of first cycle inbred lines were utilized for testing their practical applicability. The main conclusion to emerge from the analyses and results is that the prediction procedures are reasonably robust. At first sight linkage disequilibrium, non-allelic interaction and genotype x environment interaction appear to complicate the procedures for making reliable predictions. While, however, they had some effects on the quantitative accuracy of the predicitons they did not, in general, invalidate them. The second cycle hybrids are of interest because amongst ... MenosThis thesis is divided into two parts. In the first part a method for prediciting the properties of second cycle hybrids produced by pairwise or diallel crossing of the first cycle recombinant inbred lines is described. Family means and variance of the P1, P2, F1 and F2 generations of a cross are all that is required for making these predictions. The predictions have been tested on two crosses derived from four varieties of Nicotiana rustica, viz. V1xV5 cross and V2xV12 cross. The data, results and discussions involving the V1xV5 cross are presented in three publications annexed as appendices, A, B and C at the end of the thesis. Results of the experiments conducted on the V2xV12 cross are discussed in detail in this part oh the thesis. The data collected from the basic generations (P1, P2, F1, F2, B1 and B2) of the V2xV12 cross raised in three environments were used for making the predictions and the F1 families of a 30x30 diallel produced from a random sample of first cycle inbred lines were utilized for testing their practical applicability. The main conclusion to emerge from the analyses and results is that the prediction procedures are reasonably robust. At first sight linkage disequilibrium, non-allelic interaction and genotype x environment interaction appear to complicate the procedures for making reliable predictions. While, however, they had some effects on the quantitative accuracy of the predicitons they did not, in general, invalidate them. The second cycle hybr... Mostrar Tudo |
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Palavras-Chave: |
Biometrical studies; Cruzamentos dialelicos; Diallel crossing; Estudos biometricos; Genetica de planta; Inglatuerra; Metodos estatisticos; Nicoatian rustica; Statistical methods. |
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Thesagro: |
Genética; Melhoramento. |
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Thesaurus Nal: |
breeding; England; genetics. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02328nam a2200301 a 4500
001 1321357
005 2014-01-15
008 1986 bl uuuu m 00u1 u #d
100 1 $aTOLEDO, J. F. F. de
245 $aBiometrical studies on inbred lines and their hybrids.
260 $aUniversity of Birminghan$c1986
300 $a139p.
500 $aTese Doutorado.
520 $aThis thesis is divided into two parts. In the first part a method for prediciting the properties of second cycle hybrids produced by pairwise or diallel crossing of the first cycle recombinant inbred lines is described. Family means and variance of the P1, P2, F1 and F2 generations of a cross are all that is required for making these predictions. The predictions have been tested on two crosses derived from four varieties of Nicotiana rustica, viz. V1xV5 cross and V2xV12 cross. The data, results and discussions involving the V1xV5 cross are presented in three publications annexed as appendices, A, B and C at the end of the thesis. Results of the experiments conducted on the V2xV12 cross are discussed in detail in this part oh the thesis. The data collected from the basic generations (P1, P2, F1, F2, B1 and B2) of the V2xV12 cross raised in three environments were used for making the predictions and the F1 families of a 30x30 diallel produced from a random sample of first cycle inbred lines were utilized for testing their practical applicability. The main conclusion to emerge from the analyses and results is that the prediction procedures are reasonably robust. At first sight linkage disequilibrium, non-allelic interaction and genotype x environment interaction appear to complicate the procedures for making reliable predictions. While, however, they had some effects on the quantitative accuracy of the predicitons they did not, in general, invalidate them. The second cycle hybrids are of interest because amongst ...
650 $abreeding
650 $aEngland
650 $agenetics
650 $aGenética
650 $aMelhoramento
653 $aBiometrical studies
653 $aCruzamentos dialelicos
653 $aDiallel crossing
653 $aEstudos biometricos
653 $aGenetica de planta
653 $aInglatuerra
653 $aMetodos estatisticos
653 $aNicoatian rustica
653 $aStatistical methods
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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