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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
28/09/2007 |
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Data da última atualização: |
26/07/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LOUREIRO, M. de F.; KASCHUK, G.; ALBERTON, O.; HUNGRIA, M. |
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Afiliação: |
MARIA DE FÁTIMA LOUREIRO, Faculdade de Agronomia e Medicina Veterinária/Universidade Federal do Mato Grosso; GLACIELA KASCHUK, Plant Production Systems Group; ODAIR ALBERTON, Department of Soil Quality; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Soybean [Glycine max (L.) Merrill] rhizobial diversity in Brazilian oxisols under various soil, cropping, and inoculation managements. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Biology and Fertility of Soils, Berlin, v. 43, n. 6. p. 665-674, Aug. 2007. |
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ISSN: |
0178-2762 |
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DOI: |
10.1007/s00374-006-0146-x |
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Idioma: |
Inglês |
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Conteúdo: |
In this study, soybean nodules were collected from 12 sites in the State of Mato Grosso, in the Brazilian Cerrados, where both exotic soybean [Glycine max (L.) Merrill] and bradyrhizobial strains have been introduced from 1 to 18 years before. All soils were originally devoid of rhizobia capable of effectively nodulating soybean and varied in terms of chemical and physical properties, inoculation procedures, and cropping systems. Rhizobial genetic diversity was assessed on 240 isolates by rep-PCR fingerprinting with BOX primer, and indices of diversity (abundance-based coverage estimator and traditional and modified Shannon indices) were applied to the profiles obtained. The genetic diversity was much greater than expected, as after the introduction of a maximum of four strains, up to 13 profiles were identified, some sharing many similar bands with the inoculant strains, but others quite distinct from the putative parental genotypes. The increase in the number of rep-PCR profiles could be attributed to genetic variability due to the stressful tropical environmental conditions, but also might indicate that indigenous rhizobia become capable of nodulating the host legume. After the third year of cropping with the host legume, inoculation did not affect rhizobial diversity. A high content of clay decreased diversity in comparison with that seen in a sandy soil, probably due to reduced aeration. Diversity was higher under the no-tillage system when compared to the conventional tillage management, highlighting the importance of maintaining crop residues in tropical soils. Understanding the ecology of exotic rhizobia after being introduced into new cropping areas represents a first step towards the establishment of better strategies of inoculation, which in turn may result in sustainability and higher plant yields. MenosIn this study, soybean nodules were collected from 12 sites in the State of Mato Grosso, in the Brazilian Cerrados, where both exotic soybean [Glycine max (L.) Merrill] and bradyrhizobial strains have been introduced from 1 to 18 years before. All soils were originally devoid of rhizobia capable of effectively nodulating soybean and varied in terms of chemical and physical properties, inoculation procedures, and cropping systems. Rhizobial genetic diversity was assessed on 240 isolates by rep-PCR fingerprinting with BOX primer, and indices of diversity (abundance-based coverage estimator and traditional and modified Shannon indices) were applied to the profiles obtained. The genetic diversity was much greater than expected, as after the introduction of a maximum of four strains, up to 13 profiles were identified, some sharing many similar bands with the inoculant strains, but others quite distinct from the putative parental genotypes. The increase in the number of rep-PCR profiles could be attributed to genetic variability due to the stressful tropical environmental conditions, but also might indicate that indigenous rhizobia become capable of nodulating the host legume. After the third year of cropping with the host legume, inoculation did not affect rhizobial diversity. A high content of clay decreased diversity in comparison with that seen in a sandy soil, probably due to reduced aeration. Diversity was higher under the no-tillage system when compared to the conventional ... Mostrar Tudo |
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Thesagro: |
Soja. |
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Categoria do assunto: |
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Marc: |
LEADER 02458naa a2200193 a 4500
001 1470274
005 2017-07-26
008 2007 bl uuuu u00u1 u #d
022 $a0178-2762
024 7 $a10.1007/s00374-006-0146-x$2DOI
100 1 $aLOUREIRO, M. de F.
245 $aSoybean [Glycine max (L.) Merrill] rhizobial diversity in Brazilian oxisols under various soil, cropping, and inoculation managements.
260 $c2007
520 $aIn this study, soybean nodules were collected from 12 sites in the State of Mato Grosso, in the Brazilian Cerrados, where both exotic soybean [Glycine max (L.) Merrill] and bradyrhizobial strains have been introduced from 1 to 18 years before. All soils were originally devoid of rhizobia capable of effectively nodulating soybean and varied in terms of chemical and physical properties, inoculation procedures, and cropping systems. Rhizobial genetic diversity was assessed on 240 isolates by rep-PCR fingerprinting with BOX primer, and indices of diversity (abundance-based coverage estimator and traditional and modified Shannon indices) were applied to the profiles obtained. The genetic diversity was much greater than expected, as after the introduction of a maximum of four strains, up to 13 profiles were identified, some sharing many similar bands with the inoculant strains, but others quite distinct from the putative parental genotypes. The increase in the number of rep-PCR profiles could be attributed to genetic variability due to the stressful tropical environmental conditions, but also might indicate that indigenous rhizobia become capable of nodulating the host legume. After the third year of cropping with the host legume, inoculation did not affect rhizobial diversity. A high content of clay decreased diversity in comparison with that seen in a sandy soil, probably due to reduced aeration. Diversity was higher under the no-tillage system when compared to the conventional tillage management, highlighting the importance of maintaining crop residues in tropical soils. Understanding the ecology of exotic rhizobia after being introduced into new cropping areas represents a first step towards the establishment of better strategies of inoculation, which in turn may result in sustainability and higher plant yields.
650 $aSoja
700 1 $aKASCHUK, G.
700 1 $aALBERTON, O.
700 1 $aHUNGRIA, M.
773 $tBiology and Fertility of Soils, Berlin$gv. 43, n. 6. p. 665-674, Aug. 2007.
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Registro original: |
Embrapa Soja (CNPSO) |
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Registro Completo
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
03/12/2010 |
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Data da última atualização: |
17/10/2019 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SILVEIRA, L. P.; MARTINS, J. V.; VINHAS, P.; COSTA, L. C.; CAMPOS, A. D.; GOMES, C. B.; UENO, B.; PORTO, F. G. da S.; PEREIRA, M. R. |
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Afiliação: |
LUIZA PICCININI SILVEIRA, UFPel; JONAS VARGAS MARTINS, FAPEG; PATRÍCIA VINHAS, FAPEG; LISIANE CENTENO COSTA, UFPel; ANGELA DINIZ CAMPOS, CPACT; CESAR BAUER GOMES, CPACT; BERNARDO UENO, CPACT; FABIANE GRECCO DA SILVA PORTO, CPACT; MARIO RENE PEREIRA, CPACT. |
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Título: |
Atividade de peroxidase e ß-1,3-glucanase em pimenteiras Mitla pulverizadas com K2HPO4 e extrato pirolenhoso+quitosana inoculadas ou não com Meloidogyne incognita. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: ENCONTRO DE INICIAÇÃO CIENTÍFICA E PÓS GRADUAÇÃO DA EMBRAPA CLIMA TEMPERADO, 3., 2010, Pelotas. resumos e palestras... Pelotas: Embrapa Clima Temperado, 2010. Anais: Carreira, ética e inovação: o que você está fazendo? Pelotas: Embrapa Clima Temperado, 2010. Editado por Ivan Rodrigues de Almeida, Leonardo Ferreira Dutra e Jamir Luis Silva da Silva. 1 CD-ROM. |
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Idioma: |
Português |
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Palavras-Chave: |
Pimenteiras. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/203073/1/14232.pdf
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Marc: |
LEADER 00999nam a2200205 a 4500
001 1868594
005 2019-10-17
008 2010 bl uuuu u00u1 u #d
100 1 $aSILVEIRA, L. P.
245 $aAtividade de peroxidase e ß-1,3-glucanase em pimenteiras Mitla pulverizadas com K2HPO4 e extrato pirolenhoso+quitosana inoculadas ou não com Meloidogyne incognita.
260 $aIn: ENCONTRO DE INICIAÇÃO CIENTÍFICA E PÓS GRADUAÇÃO DA EMBRAPA CLIMA TEMPERADO, 3., 2010, Pelotas. resumos e palestras... Pelotas: Embrapa Clima Temperado, 2010. Anais: Carreira, ética e inovação: o que você está fazendo? Pelotas: Embrapa Clima Temperado, 2010. Editado por Ivan Rodrigues de Almeida, Leonardo Ferreira Dutra e Jamir Luis Silva da Silva. 1 CD-ROM.$c2010
653 $aPimenteiras
700 1 $aMARTINS, J. V.
700 1 $aVINHAS, P.
700 1 $aCOSTA, L. C.
700 1 $aCAMPOS, A. D.
700 1 $aGOMES, C. B.
700 1 $aUENO, B.
700 1 $aPORTO, F. G. da S.
700 1 $aPEREIRA, M. R.
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