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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Soja. |
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Data corrente: |
18/11/1996 |
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Data da última atualização: |
22/04/1999 |
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Autoria: |
TOLEDO, J. F. F. de. |
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Título: |
The inheritance of prolificacy in corn (Zea mays L.). |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
Raleigh: North Carolina State University, 1978. |
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Páginas: |
53p. |
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Idioma: |
Inglês |
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Notas: |
Tese Mestrado. |
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Conteúdo: |
Several single and double crosses representing eight out of nine genotypes of the two-locus model of simple inheritance for prolificacy, as proposed by Harris (1974), were tested for development of second ears. Analysis of variance and means for the genotype showed sizeable differences among genotype means for variables such as silk number, silk delay, and ear number. Correlation analysis between the several evaluated traits helped in defining the genotype groups characteristics. Data from same entries were algo used to obtain expected distributions for segregating generations in terms of earshoots with no silk, silk but no ear and ear. With these distributions and the data of twenty other segregating entries (double crosses), also available from the same experiment, the prediction value of the two-locus model was tested. Results from several chi-square tests led to the rejection of the two-locus model of inheritance for prolificacy. However, indications existed in this work that the number of loci, although more than two, may not be large. The fact that Harris (1974) was able to separate his experimental material, quite successfully, in three categories--non-prolific, semi-prolific, and prolific--also supports this view. The intra-plant regulation of prolificacy seems to involve the distribution of nutrients to the developing earshoots and also the direct control through a repressor hormone. |
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Palavras-Chave: |
Cultivo; EUA; Heranca genetica; Inheritance; Maize; Prolificacy; Prolificade; USA. |
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Thesagro: |
Hereditariedade; Melhoramento Genético Vegetal; Milho; Reprodução Vegetal; Zea Mays. |
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Thesaurus Nal: |
corn; genetics; plant breeding; planting; reproduction. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02272nam a2200349 a 4500
001 1563206
005 1999-04-22
008 1978 bl uuuu m 00u1 u #d
100 1 $aTOLEDO, J. F. F. de
245 $aThe inheritance of prolificacy in corn (Zea mays L.).
260 $aRaleigh: North Carolina State University$c1978
300 $a53p.
500 $aTese Mestrado.
520 $aSeveral single and double crosses representing eight out of nine genotypes of the two-locus model of simple inheritance for prolificacy, as proposed by Harris (1974), were tested for development of second ears. Analysis of variance and means for the genotype showed sizeable differences among genotype means for variables such as silk number, silk delay, and ear number. Correlation analysis between the several evaluated traits helped in defining the genotype groups characteristics. Data from same entries were algo used to obtain expected distributions for segregating generations in terms of earshoots with no silk, silk but no ear and ear. With these distributions and the data of twenty other segregating entries (double crosses), also available from the same experiment, the prediction value of the two-locus model was tested. Results from several chi-square tests led to the rejection of the two-locus model of inheritance for prolificacy. However, indications existed in this work that the number of loci, although more than two, may not be large. The fact that Harris (1974) was able to separate his experimental material, quite successfully, in three categories--non-prolific, semi-prolific, and prolific--also supports this view. The intra-plant regulation of prolificacy seems to involve the distribution of nutrients to the developing earshoots and also the direct control through a repressor hormone.
650 $acorn
650 $agenetics
650 $aplant breeding
650 $aplanting
650 $areproduction
650 $aHereditariedade
650 $aMelhoramento Genético Vegetal
650 $aMilho
650 $aReprodução Vegetal
650 $aZea Mays
653 $aCultivo
653 $aEUA
653 $aHeranca genetica
653 $aInheritance
653 $aMaize
653 $aProlificacy
653 $aProlificade
653 $aUSA
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Registro original: |
Embrapa Cerrados (CPAC) |
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