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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados; Embrapa Soja. |
Data corrente: |
18/11/1996 |
Data da última atualização: |
22/04/1999 |
Autoria: |
TOLEDO, J. F. F. de. |
Título: |
The inheritance of prolificacy in corn (Zea mays L.). |
Ano de publicação: |
1978 |
Fonte/Imprenta: |
Raleigh: North Carolina State University, 1978. |
Páginas: |
53p. |
Idioma: |
Inglês |
Notas: |
Tese Mestrado. |
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. |
Palavras-Chave: |
Cultivo; EUA; Heranca genetica; Inheritance; Maize; Prolificacy; Prolificade; USA. |
Thesagro: |
Hereditariedade; Melhoramento Genético Vegetal; Milho; Reprodução Vegetal; Zea Mays. |
Thesaurus Nal: |
corn; genetics; plant breeding; planting; reproduction. |
Categoria do assunto: |
-- |
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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Embrapa Cerrados (CPAC) |
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2. | | TOLEDO, J. F. F. de. Análise biométrica no estudo da interação genótipo x ambiente. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 3., 2005, Gramado. Anais... Passo Fundo: Embrapa Trigo; Sociedade Brasileira de Melhoramento de Plantas, 2005. Palestra: Pdf.33. Editado por Ana Christina Sagebin Albuquerque, Cláudia de Mori, Edson Iorczeski, João Carlos Haas, Paulo Fernando Bertagnolli.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Soja. |
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Registros recuperados : 389 | |
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