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33. | | CEREZINI, P.; PÍPOLO, A. E.; HUNGRIA, M.; NOGUEIRA, M. A. Acúmulo de açúcares e fixação biológica de nitrogênio em genótipos de soja sob restrição hídrica. In: IBEROAMERICAN CONFERENCE ON BENEFICIAL PLANT - MICROORGANISM - ENVIRONMENT INTERACTIONS, 2.; NATIONAL MEETING OF THE SPANISH SOCIETY OF NITROGEN FIXATION, 14.; LATIN AMERICAN MEETING ON RHIZOBIOLOGY, 26.; SPANISH-PROTUGUESE CONGRESS ON NITROGEN FIXATION, 3., 2013, Sevilla. Microorganisms for future agriculture. Sevilla: Universidad de Sevilla; ALAR; SEFIN, 2013. p. 358-359. Biblioteca(s): Embrapa Soja. |
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
05/01/2015 |
Data da última atualização: |
07/04/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 2 |
Autoria: |
CEREZINI, P.; PÍPOLO, A. E.; HUNGRIA, M.; NOGUEIRA, M. A. |
Afiliação: |
PAULA CEREZINI, UEL; ANTONIO EDUARDO PÍPOLO, CNPSO; MARIANGELA HUNGRIA DA CUNHA, CNPSO; MARCO ANTONIO NOGUEIRA, CNPSO. |
Título: |
Gas exchanges and biological nitrogen fixation in soybean under water restriction. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
American Journal of Plant Sciences, v. 5, n. 26, p. 4011-4017, Dec. 2014. |
ISSN: |
2158-2742 |
DOI: |
http://dx.doi.org/10.4236/ajps.2014.526419 |
Idioma: |
Inglês |
Conteúdo: |
Biological nitrogen fixation (BNF) in soybean is vulnerable to drought; however, there are genotypic variations among soybean cultivars regarding the ability to keep BNF under moderate water restriction. The aim of this study was to evaluate parameters related to gas exchanges and regulation of BNF in soybean genotypes BNF drought-tolerant (R01-581F and R01-416F), or drought-susceptible (CD 215 and BRS 317), submitted to adequate water supply or restriction between 45 and 55 days after emergence. We searched for traits associated with tolerance/susceptibility to drought, which might be useful in the selection of drought-tolerant soybean genotypes. Plant biomass was not affected under water restriction, but the number and dry weight of nodules reduced by 33% and 12%, respectively, in the average of genotypes. Drought-tolerant genotypes were more effective in maintaining gas exchanges under water restriction. Under water restriction, all genotypes increased the concentration of ureides in nodules, but only the susceptible genotypes showed that in leaves. The maintenance of gas exchanges and N metabolism regulation under water restriction in genotype R01-581F suggests that these parameters may be used to characterize soybean genotypes that can be sources of drought tolerance in genetic breeding programs. |
Palavras-Chave: |
Fixação biológica de nitrogênio. |
Thesaurus NAL: |
Nitrogen fixation. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/114752/1/Gas-exchanges-and-biological-nitrogen-fixation-in-soybean-under-water-restriction.pdf
|
Marc: |
LEADER 01990naa a2200205 a 4500 001 2004219 005 2022-04-07 008 2014 bl uuuu u00u1 u #d 022 $a2158-2742 024 7 $ahttp://dx.doi.org/10.4236/ajps.2014.526419$2DOI 100 1 $aCEREZINI, P. 245 $aGas exchanges and biological nitrogen fixation in soybean under water restriction.$h[electronic resource] 260 $c2014 520 $aBiological nitrogen fixation (BNF) in soybean is vulnerable to drought; however, there are genotypic variations among soybean cultivars regarding the ability to keep BNF under moderate water restriction. The aim of this study was to evaluate parameters related to gas exchanges and regulation of BNF in soybean genotypes BNF drought-tolerant (R01-581F and R01-416F), or drought-susceptible (CD 215 and BRS 317), submitted to adequate water supply or restriction between 45 and 55 days after emergence. We searched for traits associated with tolerance/susceptibility to drought, which might be useful in the selection of drought-tolerant soybean genotypes. Plant biomass was not affected under water restriction, but the number and dry weight of nodules reduced by 33% and 12%, respectively, in the average of genotypes. Drought-tolerant genotypes were more effective in maintaining gas exchanges under water restriction. Under water restriction, all genotypes increased the concentration of ureides in nodules, but only the susceptible genotypes showed that in leaves. The maintenance of gas exchanges and N metabolism regulation under water restriction in genotype R01-581F suggests that these parameters may be used to characterize soybean genotypes that can be sources of drought tolerance in genetic breeding programs. 650 $aNitrogen fixation 653 $aFixação biológica de nitrogênio 700 1 $aPÍPOLO, A. E. 700 1 $aHUNGRIA, M. 700 1 $aNOGUEIRA, M. A. 773 $tAmerican Journal of Plant Sciences$gv. 5, n. 26, p. 4011-4017, Dec. 2014.
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