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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
07/11/1997 |
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Data da última atualização: |
11/06/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
URREA-GOMEZ, R.; CEBALHOS, H.; PANDEY, S.; BAHIA FILHO, A. F. C.; LEON, L. A. |
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Afiliação: |
EMBRAPA/CNPMS. |
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Título: |
A greenhouse screening technique for acid soil tolerance in maize. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
Agronomy Journal, Madison, v. 88, n. 5, p. 806-812, 1996. |
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Idioma: |
Inglês |
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Conteúdo: |
Evaluating maize (Zea mays L.) in the field for tolerance to soil acidity is expensive and provides variable results. To identify alternative screening techniques for maize, the present study adapted a pot biossay already used for other crops. Two expriments were conducted. One included a set of diallel crosses from eight parents and the other a set of 10 open-pollinated cultivars. These materials were evaluated under field conditions, in nutrient solution, and in pots containing 2 kg of soil. The best results were obtained after growing plants for 14 d in pots containing soils having intermediate stress (45-65% Al saturation). Fresh root weight, total lenght (or lateral root lenght), and visual scoring provided the best separation between tolerant and susceptible genotypes, lacked a significant genotype x soil interaction, and were efficient, simple, and rapid measurements. Significant phenotypic correlations (= 0,55) were observed between these variable and yield in the field. While efficiently distinguishing tolerant from susceptible genotypes, the pot biossay could not clearly detect differences in levels of tolerance. This technique should be useful mainly in the early stages of maize breeding. Results suggest that maize possesses several mechanisms for tolerance to soil acidity. |
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Palavras-Chave: |
Acid soil; Maize; Tolerance; Tolerancia. |
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Thesagro: |
Milho; Solo Ácido; Zea Mays. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01975naa a2200253 a 4500
001 1477191
005 2018-06-11
008 1996 bl uuuu u00u1 u #d
100 1 $aURREA-GOMEZ, R.
245 $aA greenhouse screening technique for acid soil tolerance in maize.$h[electronic resource]
260 $c1996
520 $aEvaluating maize (Zea mays L.) in the field for tolerance to soil acidity is expensive and provides variable results. To identify alternative screening techniques for maize, the present study adapted a pot biossay already used for other crops. Two expriments were conducted. One included a set of diallel crosses from eight parents and the other a set of 10 open-pollinated cultivars. These materials were evaluated under field conditions, in nutrient solution, and in pots containing 2 kg of soil. The best results were obtained after growing plants for 14 d in pots containing soils having intermediate stress (45-65% Al saturation). Fresh root weight, total lenght (or lateral root lenght), and visual scoring provided the best separation between tolerant and susceptible genotypes, lacked a significant genotype x soil interaction, and were efficient, simple, and rapid measurements. Significant phenotypic correlations (= 0,55) were observed between these variable and yield in the field. While efficiently distinguishing tolerant from susceptible genotypes, the pot biossay could not clearly detect differences in levels of tolerance. This technique should be useful mainly in the early stages of maize breeding. Results suggest that maize possesses several mechanisms for tolerance to soil acidity.
650 $aMilho
650 $aSolo Ácido
650 $aZea Mays
653 $aAcid soil
653 $aMaize
653 $aTolerance
653 $aTolerancia
700 1 $aCEBALHOS, H.
700 1 $aPANDEY, S.
700 1 $aBAHIA FILHO, A. F. C.
700 1 $aLEON, L. A.
773 $tAgronomy Journal, Madison$gv. 88, n. 5, p. 806-812, 1996.
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Embrapa Milho e Sorgo (CNPMS) |
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| 12. |  | BAHIA FILHO, A. F. C.; VANCOCELLOS, C. A. Manejo da adubação. In: EMBRATER. Empresa Brasileira de Assistência Técnica e Extensão Rural. Cultura do milho; Sudeste, Sul, Centro-Oeste. Brasília, 1979. cap. 8. (EMBRATER. Manual técnico, 5).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 13. | | BAHIA FILHO, A. F. C.; VANCONCELLOS, C. A. Manejo de adubação. In: EMBRAPA. Centro Nacional de Pesquisa de Milho e Sorgo. Solos da região Centro Sul: potencialidades e limitações para as culturas de milho e sorgo. Sete Lagoas, 1978. p. 26-46.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 127 | |
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