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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
09/08/2004 |
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Data da última atualização: |
09/08/2004 |
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Autoria: |
OKITO, A.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M. |
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Título: |
Isotopic fractionation during N2 fixation by four tropical legumes. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Soil Biology & Biochemistry, Oxford, v. 36, p. 1179-1190, 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
To quantify the contribution of biological nitrogen fixation (BNF) to legume crops using the 15N natural abundance, it is necessary to determine the 15N abundance of the N derived from BNF-the B value. In this study, we used a technique b where by both legume and non-N²-fixing reference plants were grown under the same conditions in two similar soil, one artificially labelled with 15N, and the other not. the proportion of n derived from BNF (% Ndfa) was determined from the plants grown in the 15N-labelled soil and it was assumed that the %Ndfa values of the legumes grow in the soil were the same, hence the B value of the legume could be calculated. The legume used were velvet neam (Mucuna pruriens), sunnhemp (Crotalaria juncea), groundnut (Arachis hypogaea) and (glycine max) inoculated, or not, with different strains of rhizobium. The values of % Ndfa were allover 89%, and all the legume grown in unlabelled soil showed negative alpha 15N values even though the plant-available n in this soil was found approximately + 6.0%. The B values for the shoot tissue (Bs) were calculated and ranged from approximately - 1.4% for inoculated sunnhemp and groudnut to - 2.4 and - 4.5% for soybeam inoculated with bradyhizobium japonicum strain CPAC 7 bradyhizobium alkanil 29W, rspectively. The B (Bwp) values for the whole plants roots, nodules and the original seed n were still significantly different detween the soybeam plants inoculated with CPAC 7 (- 1.33%) and 29W (- 2.25%). In a parallet experiment conducted in monoxenic culture using the soybeam variety and Bradyhizobium strain, the plants accumulated less N from BNF and the values were less negative, but still significantly different for soybean inoculated with the two different Bradyhizobium strains. The results suggest that the technique utilized in this study ti determine B with legume plants grown in soil in the poen air, yields B values that are more appropriate for use under field conditions. MenosTo quantify the contribution of biological nitrogen fixation (BNF) to legume crops using the 15N natural abundance, it is necessary to determine the 15N abundance of the N derived from BNF-the B value. In this study, we used a technique b where by both legume and non-N²-fixing reference plants were grown under the same conditions in two similar soil, one artificially labelled with 15N, and the other not. the proportion of n derived from BNF (% Ndfa) was determined from the plants grown in the 15N-labelled soil and it was assumed that the %Ndfa values of the legumes grow in the soil were the same, hence the B value of the legume could be calculated. The legume used were velvet neam (Mucuna pruriens), sunnhemp (Crotalaria juncea), groundnut (Arachis hypogaea) and (glycine max) inoculated, or not, with different strains of rhizobium. The values of % Ndfa were allover 89%, and all the legume grown in unlabelled soil showed negative alpha 15N values even though the plant-available n in this soil was found approximately + 6.0%. The B values for the shoot tissue (Bs) were calculated and ranged from approximately - 1.4% for inoculated sunnhemp and groudnut to - 2.4 and - 4.5% for soybeam inoculated with bradyhizobium japonicum strain CPAC 7 bradyhizobium alkanil 29W, rspectively. The B (Bwp) values for the whole plants roots, nodules and the original seed n were still significantly different detween the soybeam plants inoculated with CPAC 7 (- 1.33%) and 29W (- 2.25%). In a paralle... Mostrar Tudo |
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Palavras-Chave: |
Biological nitrogen fixation; BNF; FBN; Fixação biológica de nitrogênio; Groundnut. |
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Thesagro: |
Amendoim; Arachis Hypogaea; Crotalária Juncea; Glycine Max; Soja. |
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Thesaurus Nal: |
Mucuna pruriens; soybeans. |
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Categoria do assunto: |
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Marc: |
LEADER 02776naa a2200301 a 4500
001 1626283
005 2004-08-09
008 2004 bl --- 0-- u #d
100 1 $aOKITO, A.
245 $aIsotopic fractionation during N2 fixation by four tropical legumes.
260 $c2004
520 $aTo quantify the contribution of biological nitrogen fixation (BNF) to legume crops using the 15N natural abundance, it is necessary to determine the 15N abundance of the N derived from BNF-the B value. In this study, we used a technique b where by both legume and non-N²-fixing reference plants were grown under the same conditions in two similar soil, one artificially labelled with 15N, and the other not. the proportion of n derived from BNF (% Ndfa) was determined from the plants grown in the 15N-labelled soil and it was assumed that the %Ndfa values of the legumes grow in the soil were the same, hence the B value of the legume could be calculated. The legume used were velvet neam (Mucuna pruriens), sunnhemp (Crotalaria juncea), groundnut (Arachis hypogaea) and (glycine max) inoculated, or not, with different strains of rhizobium. The values of % Ndfa were allover 89%, and all the legume grown in unlabelled soil showed negative alpha 15N values even though the plant-available n in this soil was found approximately + 6.0%. The B values for the shoot tissue (Bs) were calculated and ranged from approximately - 1.4% for inoculated sunnhemp and groudnut to - 2.4 and - 4.5% for soybeam inoculated with bradyhizobium japonicum strain CPAC 7 bradyhizobium alkanil 29W, rspectively. The B (Bwp) values for the whole plants roots, nodules and the original seed n were still significantly different detween the soybeam plants inoculated with CPAC 7 (- 1.33%) and 29W (- 2.25%). In a parallet experiment conducted in monoxenic culture using the soybeam variety and Bradyhizobium strain, the plants accumulated less N from BNF and the values were less negative, but still significantly different for soybean inoculated with the two different Bradyhizobium strains. The results suggest that the technique utilized in this study ti determine B with legume plants grown in soil in the poen air, yields B values that are more appropriate for use under field conditions.
650 $aMucuna pruriens
650 $asoybeans
650 $aAmendoim
650 $aArachis Hypogaea
650 $aCrotalária Juncea
650 $aGlycine Max
650 $aSoja
653 $aBiological nitrogen fixation
653 $aBNF
653 $aFBN
653 $aFixação biológica de nitrogênio
653 $aGroundnut
700 1 $aALVES, B. J. R.
700 1 $aURQUIAGA, S.
700 1 $aBODDEY, R. M.
773 $tSoil Biology & Biochemistry, Oxford$gv. 36, p. 1179-1190, 2004.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| Registros recuperados : 728 | |
| 82. |  | ALVES, B. J. R.; TORRES, E.; URQUIAGA, S.; BODDEY, R. M.; ZOTARELLI, L. Resposta da cultura do milho a abudacao verde com tremoco, em sistema de rotacao de culturas sob plantio direto e convencional. In: CONGRESSO BRASILEIRO DE CIENCIA DO SOLO, 28., 2001, Londrina. Ciencia do solo: fator de produtividade e competitividade com sustentabilidade. Londrina: Sociedade Brasileira de Ciencia do Solo, 2001. p.255.| Biblioteca(s): Embrapa Soja. |
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| 90. | | PAULINO, G. M.; ALVES, B. J. R.; BARROSO, D. G.; URQUIAGA, S.; ESPINDOLA, J. A. A. Fixação biológica de nitrogênio e transferência de nitrogênio por leguminosas em pomar orgânico de mangueira e gravioleira. Pesquisa Agropecuária Brasileira, Brasília, v. 44, n. 12, p. 1598-1607, dez. 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 91. | | PAULINO, G. M.; ALVES, B. J. R.; BARROSO, D. G.; URQUIAGA, S.; ESPINDOLA, J. A. A. Fixação biológica e transferência de nitrogênio por leguminosas em pomar orgânico de mangueira e gravioleira. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 12, p. 1598-1607, dez. 2009 Título em inglês: Biological fixation and nitrogen transfer by three legume species in mango and soursop organic orchards.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 93. | | URQUIAGA, S.; ALVES, B. J. R.; SOARES, L. H. B.; JANTALIA, C. P.; BODDEY, R. M. La fijación biológica de nitrógeno: suporte essensial para la agroenergia In: REUNIÓN CIENTIFICO TÉCNICA DE BIOLOGIA DEL SUELO Y FIJACIÓN BIOLÓGICA DE NITRÓGENIO- REBIOS, 7., 2009, San Miguel de Tucaumán, AR. Libro de resúmenes...San Miguel de Tucaumán: Universidad Nacional de Tucumán, 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 100. | | JANTALIA, C. P.; SANTOS, H. P. dos; URQUIAGA, S.; BODDEY, R. M.; ALVES, B. J. R. Fluxos de óxido nitroso do solo sob diferentes rotações de culturas e sistemas de preparo do solo no sul do Brasil. In: SOTTA, E. D.; SAMPAIO, F. G.; GALLARDO, J. V. G. (org.). Coletânea dos fatores de emissão e remoção de gases de efeito estufa da agricultura brasileira. Brasília, DF: MAPA/SENAR, 2020. p. 80-81| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Agrobiologia. |
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| Registros recuperados : 728 | |
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