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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
19/12/1995 |
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Data da última atualização: |
19/09/2012 |
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Autoria: |
FRANCO, A. A. |
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Título: |
Acidity factors limiting nodulation, nitrogen fixation und growth of Phaseolus vulgaris L. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
1981. 144 p. Tese (Doutorado) - University of California, Davis. |
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Idioma: |
Inglês |
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Notas: |
Orientada: D.N. Munns. |
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Conteúdo: |
Bean (Phaseolus vulgaris L.) is extensively grown in tropical regions, mostly in developing countries without use of N-fertilizer. However, root nodulation and N2-fixation has been found variable under acidic conditions, when soil is used as growth medium. Conditions and techniques for achieving good nodulation of bean in continuous aerated solution culture were developed. The effects of pH on uptake and distribution of Mo in bean were studied in greenhouse and growth chamber experiments in soil and solution culture. The effects of pH and Al on nodule initiation and growth, nitrogen fixation (C2H2-reduction) and shoot and root growth were studied in solution and san culture. Growth and nitrogenase activity of nodule and plant growth in solution culture were atleast as good as in gravel. However, nodule initiation was restricted to plants inoculated before or imediately after transfer of seedlings to solution and was restricted to the roots already present before transfer. Lack of nodulation could not be explained by failure of bacteria to colonize the root or absence of root hairs. There were indications that the P-status of the plant together with a factor or factors that had to accumulate or deplete in solution, determined success or failure of nodulation. Daily application of 0.5-1.0 mg N per plant delayed nodule growth and nitrogen fixation slightly, but increased plant growth and alleviated the severe N-deficiency stress before the onset of N2-fixation. In six cultivars, Mo uptake in solution culture was ... MenosBean (Phaseolus vulgaris L.) is extensively grown in tropical regions, mostly in developing countries without use of N-fertilizer. However, root nodulation and N2-fixation has been found variable under acidic conditions, when soil is used as growth medium. Conditions and techniques for achieving good nodulation of bean in continuous aerated solution culture were developed. The effects of pH on uptake and distribution of Mo in bean were studied in greenhouse and growth chamber experiments in soil and solution culture. The effects of pH and Al on nodule initiation and growth, nitrogen fixation (C2H2-reduction) and shoot and root growth were studied in solution and san culture. Growth and nitrogenase activity of nodule and plant growth in solution culture were atleast as good as in gravel. However, nodule initiation was restricted to plants inoculated before or imediately after transfer of seedlings to solution and was restricted to the roots already present before transfer. Lack of nodulation could not be explained by failure of bacteria to colonize the root or absence of root hairs. There were indications that the P-status of the plant together with a factor or factors that had to accumulate or deplete in solution, determined success or failure of nodulation. Daily application of 0.5-1.0 mg N per plant delayed nodule growth and nitrogen fixation slightly, but increased plant growth and alleviated the severe N-deficiency stress before the onset of N2-fixation. In six cultivars... Mostrar Tudo |
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Palavras-Chave: |
BNF; FBN; Fixação biológica de nitrogênio; Nitrogen fixing bacteria; Root nodulation. |
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Thesagro: |
Acidez; Feijão; Nodulação; Phaseolus Vulgaris; Raiz. |
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Thesaurus Nal: |
acidity; kidney beans. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02289nam a2200265 a 4500
001 1621717
005 2012-09-19
008 1981 bl uuuu m 00u1 u #d
100 1 $aFRANCO, A. A.
245 $aAcidity factors limiting nodulation, nitrogen fixation und growth of Phaseolus vulgaris L.
260 $a1981. 144 p. Tese (Doutorado) - University of California, Davis.$c1981
500 $aOrientada: D.N. Munns.
520 $aBean (Phaseolus vulgaris L.) is extensively grown in tropical regions, mostly in developing countries without use of N-fertilizer. However, root nodulation and N2-fixation has been found variable under acidic conditions, when soil is used as growth medium. Conditions and techniques for achieving good nodulation of bean in continuous aerated solution culture were developed. The effects of pH on uptake and distribution of Mo in bean were studied in greenhouse and growth chamber experiments in soil and solution culture. The effects of pH and Al on nodule initiation and growth, nitrogen fixation (C2H2-reduction) and shoot and root growth were studied in solution and san culture. Growth and nitrogenase activity of nodule and plant growth in solution culture were atleast as good as in gravel. However, nodule initiation was restricted to plants inoculated before or imediately after transfer of seedlings to solution and was restricted to the roots already present before transfer. Lack of nodulation could not be explained by failure of bacteria to colonize the root or absence of root hairs. There were indications that the P-status of the plant together with a factor or factors that had to accumulate or deplete in solution, determined success or failure of nodulation. Daily application of 0.5-1.0 mg N per plant delayed nodule growth and nitrogen fixation slightly, but increased plant growth and alleviated the severe N-deficiency stress before the onset of N2-fixation. In six cultivars, Mo uptake in solution culture was ...
650 $aacidity
650 $akidney beans
650 $aAcidez
650 $aFeijão
650 $aNodulação
650 $aPhaseolus Vulgaris
650 $aRaiz
653 $aBNF
653 $aFBN
653 $aFixação biológica de nitrogênio
653 $aNitrogen fixing bacteria
653 $aRoot nodulation
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| Registros recuperados : 367 | |
| 2. |  | FRANCO, A. A. Contribution of biologically-fixed nitrogen to food crop production in Brazil. In: KANG, B.T.; HEIDE, J. van der (Ed.). Nitrogen management in farming systems in humid and subhumid tropics. Netherlands: Institute for Soil Fertility, 1985. p. 147-166. Proceedings of Symposium on "Nitrogen Management in Farming Systems in Humid and Subhumid Tropics, held at the International Institute of Tropical Agriculture, Ibadan, Nigeria, october 23-26, 1984.| Biblioteca(s): Embrapa Agrobiologia. |
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| 10. | | FRANCO, A. A. Simbiose leguminosas; rhizobium e ciclo de nitrogenio. In: SEMINARIO SOBRE ATUALIDADES E PERSPECTIVAS FLORESTAIS: Associacoes Biologicas entre Especies Florestais e Microorganismos para Aumento da Produtividade Economica dos Reflorestamentos, 7., 1982, Curitiba. Anais... Curitiba: EMBRAPA-URPFCS, 1982. p.19-32. (EMBRAPA-URPFCS. Documentos 12)| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 367 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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