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Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
27/06/1995 |
Data da última atualização: |
17/09/1999 |
Autoria: |
SYLVESTER-BRADLEY, R.; OLIVEIRA, L. A. de; PODESTA FILHO, J. A. de; ST. JOHN, T. V. |
Título: |
Nodulation of legumes, nitrogenase activity of roots and occurrence of nitrogen-fixing Azospirillum spp. in representative soils of central Amazonia. |
Ano de publicação: |
1980 |
Fonte/Imprenta: |
Agro-Ecosystems, Amsterdam, v. 6, p. 249-266, 1980. |
Idioma: |
Inglês |
Conteúdo: |
Leguminosae do not predominante in the Brazilian Amazon rain forest, although they are amoung the five best represented families. Plant roots from various soils were examined for the presence of nodules, acetylene-reducing activity and N2-fixing Azospirillum spp. Abundant nodulation was found in black earth ("terra preta dos indios") and in one case on sandy soil under campinarana vegetation along a tributary of the upper Rio Negro. Nodules were not found on plants from many other soils and sites in this area, nor in primary or secondary forest on clayey latosol near Manaus. In sandy latosol some nodules occurred in secondary forest and fewer in primary forest. Legumes in disturbed clayey or sandy latosol showed more frequent nodulation. Primary forest on alluvial ("varzea") soil, and in Bahia coastal rain forest on sandy latosol and Erythrina glauca used for shading cacao plantations were abundantly nodulated. Acetylene reduction assays showed no, or very little, nitrogenase activity of roots from primary or secondary forest on clayey latosol near Manaus. Nodulated roots from secondary forest on sandy latosol showed acetylene-reducing activity. High rates of acetylene reduction were observed in nodulated roots of primary forest on alluvial "varzea" soil. Root samples showed ethylene absorption in controls without acetylene which might interfere with the results of acetylene reduction tests. The incidence of Azospirillum was also higher in black earth than the other soils examined, and in soils with higher pH. The hypothesis that Azospirillum is associated with Trema micrantha roots was refuted. Roots and soils collected under cultivated grasses showed a higher incidence of Azospirillum when fertilized with phosphorus and lime. Results indicate that nitrogen fixation did occur in association with roots in some soils, but not with roots of primary or secondary forest on clayey latosol in the vicinity of Manaus, which is the most common soil in Central Amazonia. The possible reasons for this are discussed. MenosLeguminosae do not predominante in the Brazilian Amazon rain forest, although they are amoung the five best represented families. Plant roots from various soils were examined for the presence of nodules, acetylene-reducing activity and N2-fixing Azospirillum spp. Abundant nodulation was found in black earth ("terra preta dos indios") and in one case on sandy soil under campinarana vegetation along a tributary of the upper Rio Negro. Nodules were not found on plants from many other soils and sites in this area, nor in primary or secondary forest on clayey latosol near Manaus. In sandy latosol some nodules occurred in secondary forest and fewer in primary forest. Legumes in disturbed clayey or sandy latosol showed more frequent nodulation. Primary forest on alluvial ("varzea") soil, and in Bahia coastal rain forest on sandy latosol and Erythrina glauca used for shading cacao plantations were abundantly nodulated. Acetylene reduction assays showed no, or very little, nitrogenase activity of roots from primary or secondary forest on clayey latosol near Manaus. Nodulated roots from secondary forest on sandy latosol showed acetylene-reducing activity. High rates of acetylene reduction were observed in nodulated roots of primary forest on alluvial "varzea" soil. Root samples showed ethylene absorption in controls without acetylene which might interfere with the results of acetylene reduction tests. The incidence of Azospirillum was also higher in black earth than the other soils ex... Mostrar Tudo |
Palavras-Chave: |
BNF; Brasil; FBN; Fixacao biologica de nitrogenio; Nitrogen fixing bacteria; Reduction; Root nodulation. |
Thesagro: |
Acetileno; Leguminosa; Leguminosae; Nitrogenase; Nodulação; Raiz; Redução; Solo. |
Thesaurus Nal: |
acetylene; Amazonia; Brazil; roots; soil. |
Categoria do assunto: |
-- |
Marc: |
LEADER 03110naa a2200397 a 4500 001 1621103 005 1999-09-17 008 1980 bl --- 0-- u #d 100 1 $aSYLVESTER-BRADLEY, R. 245 $aNodulation of legumes, nitrogenase activity of roots and occurrence of nitrogen-fixing Azospirillum spp. in representative soils of central Amazonia. 260 $c1980 520 $aLeguminosae do not predominante in the Brazilian Amazon rain forest, although they are amoung the five best represented families. Plant roots from various soils were examined for the presence of nodules, acetylene-reducing activity and N2-fixing Azospirillum spp. Abundant nodulation was found in black earth ("terra preta dos indios") and in one case on sandy soil under campinarana vegetation along a tributary of the upper Rio Negro. Nodules were not found on plants from many other soils and sites in this area, nor in primary or secondary forest on clayey latosol near Manaus. In sandy latosol some nodules occurred in secondary forest and fewer in primary forest. Legumes in disturbed clayey or sandy latosol showed more frequent nodulation. Primary forest on alluvial ("varzea") soil, and in Bahia coastal rain forest on sandy latosol and Erythrina glauca used for shading cacao plantations were abundantly nodulated. Acetylene reduction assays showed no, or very little, nitrogenase activity of roots from primary or secondary forest on clayey latosol near Manaus. Nodulated roots from secondary forest on sandy latosol showed acetylene-reducing activity. High rates of acetylene reduction were observed in nodulated roots of primary forest on alluvial "varzea" soil. Root samples showed ethylene absorption in controls without acetylene which might interfere with the results of acetylene reduction tests. The incidence of Azospirillum was also higher in black earth than the other soils examined, and in soils with higher pH. The hypothesis that Azospirillum is associated with Trema micrantha roots was refuted. Roots and soils collected under cultivated grasses showed a higher incidence of Azospirillum when fertilized with phosphorus and lime. Results indicate that nitrogen fixation did occur in association with roots in some soils, but not with roots of primary or secondary forest on clayey latosol in the vicinity of Manaus, which is the most common soil in Central Amazonia. The possible reasons for this are discussed. 650 $aacetylene 650 $aAmazonia 650 $aBrazil 650 $aroots 650 $asoil 650 $aAcetileno 650 $aLeguminosa 650 $aLeguminosae 650 $aNitrogenase 650 $aNodulação 650 $aRaiz 650 $aRedução 650 $aSolo 653 $aBNF 653 $aBrasil 653 $aFBN 653 $aFixacao biologica de nitrogenio 653 $aNitrogen fixing bacteria 653 $aReduction 653 $aRoot nodulation 700 1 $aOLIVEIRA, L. A. de 700 1 $aPODESTA FILHO, J. A. de 700 1 $aST. JOHN, T. V. 773 $tAgro-Ecosystems, Amsterdam$gv. 6, p. 249-266, 1980.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Registros recuperados : 241 | |
63. | | GODOY, R. C. B. de; WASZCZNSKYJ, N.; SILVA, S. O.; OLIVEIRA, L. A. de; SANTANA, F. A. Análise sensorial como ferramenta no programa de melhoramento genético de banana. In: SIMPÓSIO IBERO-AMERICANO EM ANÁLISE SENSORIAL, 6., 2010, São Paulo. Anais do simpósio. São Paulo: Associação Brasileira de Ciências Sensoriais: Embrapa, 2010. 1 CD-ROM. SENSIBER. SILVA, S. O. i. e., SILVA, S. de O. eTipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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67. | | OLIVEIRA, L. A. de; VIANA, E. de S.; SOUSA, M. R.; AMORIM, T. da S.; AMORIM, E. P. Avaliação das características físico-químicas de frutos de bananeiras com resistência a Sigatoka negra. In: CONGRESSO BRASILEIRO DE CIÊNCIA E TECNOLOGIA DE ALIMENTOS, 22., 2010, Salvador. Potencialidades, desafios e inovações. Salvador: sbCTA, 2010. 1. CD-ROM.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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70. | | OLIVEIRA, L. A. de; KIMURA, M.; PEREIRA, M. E. C.; FUKUDA, W. M. G.; SILVEIRA JUNIOR, P. B. da. Avaliação do conteúdo de carotenóides e compostos cianogênicos em híbridos de mandioca. Revista Raízes e Amidos Tropicais, Botucatu, v. 5, p. 805-809, jul. 2009. 1 CD-ROM. Edição dos Anais do XIII Congresso Brasileiro de Mandioca; VII Workshop sobre Tecnologia em Agroindústrias de Tuberosas Tropicais. Botucatu, jul. 2009.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 4 |
Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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71. | | SILVEIRA, S. M. da; OLIVEIRA, L. A. de; KIMURA, MIEKO; SANTOS, V. da S.; SOUSA, M. R.; FONSECA, M. D. Avaliação do conteúdo de carotenoides totais e compostos cianogênicos em híbridos de mandioca das gerações 2007 e 2008. In: CONGRESSO BRASILEIRO DE MANDIOCA, 14.; FEIRA BRASILEIRA DA MANDIOCA, 1., 2011, Maceió. Mandioca: fonte de alimento e energia: anais. Maceió: ABAM: SBM, 2011. 1 CD ROM. Melhoramento genético. Resumo n. 228.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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78. | | SANTANA, F. A.; OLIVEIRA, L. A. de; GODOY, R. C. B. de; AMORIM, T. da S.; FONSECA, M. D. Influência do momento de adição do ácido cítrico no processamento de doce de banana em corte. In: CONGRESSO BRASILEIRO DE CIÊNCIA E TECNOLOGIA DE ALIMENTOS, 22., 2010, Salvador. Potencialidades, desafios e inovações. Salvador: sbCTA, 2010. 1 CD-ROM.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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79. | | SANTANA, F. A.; OLIVEIRA, L. A. de; GODOY, R. C. B. de; AMORIM, T. da S.; FONSECA, M. D. Influência do momento de adição do ácido cítrico no processamento de doce de banana em corte. In: CONGRESSO BRASILEIRO DE CIÊNCIA E TECNOLOGIA DE ALIMENTOS, 22., 2010, Salvador. Potencialidades, desafios e inovações. Salvador: sbCTA, 2010. 1 CD-ROM.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Florestas. |
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Registros recuperados : 241 | |
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