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| Registros recuperados : 43 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
19/04/1999 |
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Data da última atualização: |
19/04/1999 |
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Autoria: |
VLASSAK, K. M.; MERCANTE, F.; STRALIOTTO, R.; FRANCO, A. A.; VUYLSTEKE, M.; VANDERLEYDEN, J. |
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Título: |
Evaluation of the intrinsic competitiveness and saprophytic competence of Rhizobium tropici IIB strains. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Biology and Fertility of Soils, Berlin, v. 24, p. 274-282, 1997. |
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Idioma: |
Inglês |
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Conteúdo: |
Inoculation of beans (Phaseolus vulgaris L.) with strains of R. tropici IIB and R. etli resulted in the disappearance of the R. tropici IIB stains from the nodule population and their replacement by other (non R. tropici IIB) bean symbionts (Vlassak et al. 1996). Coinoculation studies in monoxenic conditions and in soil core microcosms with plants harvested at two different growth stages indicated that the inoculated R. tropici IIB strains CIAT899 and F98.5 posses a good intrinsic competitiveness which declines, however, at a later plant growth stage and in soil conditions. The poor saprophytic competence of R. tropici IIB strain CIAT899 was further demonstrated by its poor survival in soil core microcosms after bean harvest. Strains were isolated from the field plots with a 3-year bean-planting history, characterized and evaluated for their competitiveness against R. tropici IIB strain CIAT899. Isolates from field plots, which had been repeatedly inoculated with R. tropici IIB strain CIAT899, showed a higher nodule occupancy compared to R. tropici IIB strain CIAT899, and this higher competitiveness exhibited by the field isolates might be an additional reason for the poor performance of R. tropici IIB strain CIAT899 in the field study. Plots with and without a history of bean production revealed after 3-year bean cultivation an almost totally different population that also significantly differed in competitiveness. |
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Palavras-Chave: |
Biological competition; BNF; FBN; Fixação biologica de nitrogênio; Nitrogen fixing bactéria; Saprofita; Saprophytism. |
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Thesagro: |
Competição Biológica; Genética; Nódulo; Solo. |
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Thesaurus NAL: |
genetics; Rhizobium etli; Rhizobium tropici; root nodules; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02466naa a2200373 a 4500
001 1621023
005 1999-04-19
008 1997 bl uuuu u00u1 u #d
100 1 $aVLASSAK, K. M.
245 $aEvaluation of the intrinsic competitiveness and saprophytic competence of Rhizobium tropici IIB strains.
260 $c1997
520 $aInoculation of beans (Phaseolus vulgaris L.) with strains of R. tropici IIB and R. etli resulted in the disappearance of the R. tropici IIB stains from the nodule population and their replacement by other (non R. tropici IIB) bean symbionts (Vlassak et al. 1996). Coinoculation studies in monoxenic conditions and in soil core microcosms with plants harvested at two different growth stages indicated that the inoculated R. tropici IIB strains CIAT899 and F98.5 posses a good intrinsic competitiveness which declines, however, at a later plant growth stage and in soil conditions. The poor saprophytic competence of R. tropici IIB strain CIAT899 was further demonstrated by its poor survival in soil core microcosms after bean harvest. Strains were isolated from the field plots with a 3-year bean-planting history, characterized and evaluated for their competitiveness against R. tropici IIB strain CIAT899. Isolates from field plots, which had been repeatedly inoculated with R. tropici IIB strain CIAT899, showed a higher nodule occupancy compared to R. tropici IIB strain CIAT899, and this higher competitiveness exhibited by the field isolates might be an additional reason for the poor performance of R. tropici IIB strain CIAT899 in the field study. Plots with and without a history of bean production revealed after 3-year bean cultivation an almost totally different population that also significantly differed in competitiveness.
650 $agenetics
650 $aRhizobium etli
650 $aRhizobium tropici
650 $aroot nodules
650 $asoil
650 $aCompetição Biológica
650 $aGenética
650 $aNódulo
650 $aSolo
653 $aBiological competition
653 $aBNF
653 $aFBN
653 $aFixação biologica de nitrogênio
653 $aNitrogen fixing bactéria
653 $aSaprofita
653 $aSaprophytism
700 1 $aMERCANTE, F.
700 1 $aSTRALIOTTO, R.
700 1 $aFRANCO, A. A.
700 1 $aVUYLSTEKE, M.
700 1 $aVANDERLEYDEN, J.
773 $tBiology and Fertility of Soils, Berlin$gv. 24, p. 274-282, 1997.
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