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Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
19/12/1995 |
Data da última atualização: |
19/09/2012 |
Autoria: |
FRANCO, A. A. |
Título: |
Acidity factors limiting nodulation, nitrogen fixation und growth of Phaseolus vulgaris L. |
Ano de publicação: |
1981 |
Fonte/Imprenta: |
1981. 144 p. Tese (Doutorado) - University of California, Davis. |
Idioma: |
Inglês |
Notas: |
Orientada: D.N. Munns. |
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 |
Palavras-Chave: |
BNF; FBN; Fixação biológica de nitrogênio; Nitrogen fixing bacteria; Root nodulation. |
Thesagro: |
Acidez; Feijão; Nodulação; Phaseolus Vulgaris; Raiz. |
Thesaurus Nal: |
acidity; kidney beans. |
Categoria do assunto: |
-- |
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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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
16/11/2000 |
Data da última atualização: |
22/05/2006 |
Autoria: |
CAMPO, R. J.; WOOD, M. |
Título: |
Effect of exposure Bradyrhizobium japonicum to Al and Mn in soil solutions from acid soil. |
Ano de publicação: |
1996 |
Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ON PLANT - SOIL INTERACTIONS AT LOW pH, 4., 1996, Belo Horizonte. Abstracts... Sete Lagoas: EMBRAPA-CNPMS, 1996. |
Páginas: |
nao paginado. |
Idioma: |
Inglês |
Notas: |
Trabalho numero P136. |
Thesagro: |
Fertilidade do Solo; Solo Ácido. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00593naa a2200169 a 4500 001 1462405 005 2006-05-22 008 1996 bl uuuu u00u1 u #d 100 1 $aCAMPO, R. J. 245 $aEffect of exposure Bradyrhizobium japonicum to Al and Mn in soil solutions from acid soil. 260 $c1996 300 $anao paginado. 500 $aTrabalho numero P136. 650 $aFertilidade do Solo 650 $aSolo Ácido 700 1 $aWOOD, M. 773 $tIn: INTERNATIONAL SYMPOSIUM ON PLANT - SOIL INTERACTIONS AT LOW pH, 4., 1996, Belo Horizonte. Abstracts... Sete Lagoas: EMBRAPA-CNPMS, 1996.
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