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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
22/02/2006 |
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Data da última atualização: |
23/02/2006 |
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Autoria: |
OLIVEIRA, P. H. de; FEDERIZZI, L. C.; MILACH, S. C. K.; GOTUZZO, C.; SAWASATO, J. T. |
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Título: |
Inheritance in oat (Avena sativa L.) of tolerance to soil aluminum toxicity. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 5, n. 3, p. 302-309, Sept. 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
Aluminum toxicity is a limiting factor for the expression of the yield potential in oat. The development of aluminum toxicity-tolerant genotypes is the cheapest and most feasible alternative for cultivation of soils with acid subsoil. Objectives of this study were to determine the gene action, number of genes and heritability of tolerance of oat genotypes to toxic aluminum concentrations. Parent genotypes and the F1 and F2 generations of some crossings plus the F3, F4, F5, BC1F1, and BC2F1 generations were discriminated by the analysis of root regrowth in plantlets exposed to aluminum. Additive gene action predominated among the genetic effects. Only one segregating gene was found which has multiple alleles, two for tolerance (Al1 and Al2) and one for sensitivity (al). The heritability of the trait was high, indicating that tolerant genotypes can be selected in early generations of improvement programs.. |
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Palavras-Chave: |
Genótipos; Genotypes; Herdabilidade; Herdability; Oat improvement; Raízes; Solos ácidos. |
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Thesagro: |
Aveia; Avena Sativa; Melhoramento. |
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Thesaurus Nal: |
acid soils; roots. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01763naa a2200313 a 4500
001 1213877
005 2006-02-23
008 2005 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, P. H. de
245 $aInheritance in oat (Avena sativa L.) of tolerance to soil aluminum toxicity.
260 $c2005
520 $aAluminum toxicity is a limiting factor for the expression of the yield potential in oat. The development of aluminum toxicity-tolerant genotypes is the cheapest and most feasible alternative for cultivation of soils with acid subsoil. Objectives of this study were to determine the gene action, number of genes and heritability of tolerance of oat genotypes to toxic aluminum concentrations. Parent genotypes and the F1 and F2 generations of some crossings plus the F3, F4, F5, BC1F1, and BC2F1 generations were discriminated by the analysis of root regrowth in plantlets exposed to aluminum. Additive gene action predominated among the genetic effects. Only one segregating gene was found which has multiple alleles, two for tolerance (Al1 and Al2) and one for sensitivity (al). The heritability of the trait was high, indicating that tolerant genotypes can be selected in early generations of improvement programs..
650 $aacid soils
650 $aroots
650 $aAveia
650 $aAvena Sativa
650 $aMelhoramento
653 $aGenótipos
653 $aGenotypes
653 $aHerdabilidade
653 $aHerdability
653 $aOat improvement
653 $aRaízes
653 $aSolos ácidos
700 1 $aFEDERIZZI, L. C.
700 1 $aMILACH, S. C. K.
700 1 $aGOTUZZO, C.
700 1 $aSAWASATO, J. T.
773 $tCrop Breeding and Applied Biotechnology, Viçosa, MG$gv. 5, n. 3, p. 302-309, Sept. 2005.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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| 1. |  | AMARAL, E. F. do; BARDALES, N. G.; ARAÚJO, E. A. de; OLIVEIRA, T. K. de; HAVERROTH, M.; MARTORANO, L. G.; FRANKE, I. L.; CARMO, L. F. Z. do; OLIVEIRA, C. H. A. de; MELO, V. F.; MORAES, J. R. da S. C. de; MELO, A. W. F. de; LANI, J. L. Solos da Terra Indígena Kaxinawá Nova Olinda, Feijó, Estado do Acre, Brasil. Rio Branco, AC: Embrapa Acre, 2019. (Embrapa Acre. Documentos, 159). Selo ODS 17.| Biblioteca(s): Embrapa Acre. |
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