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Abstract
Bradyrhizobium strains were isolated from nodules obtained from field-grown soybean plants sampled in 12 soybean production locations in Argentina. These fields had been annually cropped with soybean and did not show decreases in yields even though they had been neither N-fertilized nor inoculated for at least the last 5 years. We hypothesized that the isolated strains maintained high competitiveness and efficiency in fixing adequate N2 levels. A set of [ver mas...]
dc.contributor.authorMelchiorre, Mariana
dc.contributor.authorDe Luca, Marcos Javier
dc.contributor.authorGonzalez Anta, Gustavo
dc.contributor.authorSuarez, Paola Alejandra
dc.contributor.authorLopez, Carlos
dc.contributor.authorLascano, Hernan Ramiro
dc.contributor.authorRacca, Roberto Walter
dc.date.accessioned2021-12-17T19:40:15Z
dc.date.available2021-12-17T19:40:15Z
dc.date.issued2010-09-22
dc.identifier.issn0178-2762
dc.identifier.issn1432-0789 (online)
dc.identifier.otherhttps://doi.org/10.1007/s00374-010-0503-7
dc.identifier.urihttp://hdl.handle.net/20.500.12123/10934
dc.identifier.urihttps://link.springer.com/article/10.1007/s00374-010-0503-7
dc.description.abstractBradyrhizobium strains were isolated from nodules obtained from field-grown soybean plants sampled in 12 soybean production locations in Argentina. These fields had been annually cropped with soybean and did not show decreases in yields even though they had been neither N-fertilized nor inoculated for at least the last 5 years. We hypothesized that the isolated strains maintained high competitiveness and efficiency in fixing adequate N2 levels. A set of strains that showed the highest nodular occupancy in each sampling location were assayed for symbiotic performance under greenhouse and field conditions and comparatively evaluated with Bradyrhizobium japonicum E109, the strain officially recommended for inoculant formulation in Argentina. An inoculant pool, formed by four strains obtained from nodules collected from Cañada Rica, developed higher nodular biomass than B. japonicum E 109 in assays carried out in greenhouses under well irrigated conditions. Additionally, neither nodule production nor specific nitrogenase activity decreased with respect to B. japonicum E 109 when plants were drought stressed during 7 days from sowing. The mean yields obtained under field conditions and plotted against the principal component one (CP1) obtained with an additive main effect and multiplicative interaction (AMMI) model showed that the inoculant pool from Cañada Rica had higher contribution to yield than strain E 109, although with lower environmental stability. The inoculant pool from Cañada Rica could be considered an improved inoculant and be used for preliminary assays, to formulate inoculants in Argentina.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherSpringeres_AR
dc.rightsinfo:eu-repo/semantics/openAccesses_AR
dc.sourceBiology and Fertility of Soils 47 : 81–89 (2011)es_AR
dc.subjectBradyrhizobium japonicumes_AR
dc.subjectBiological Nitrogen Fixationeng
dc.subjectSoybeanseng
dc.subjectSojaes_AR
dc.subjectArgentinaes_AR
dc.subjectSoja
dc.subjectFijación Biológica del Nitrógeno
dc.subject.otherInoculantes_AR
dc.titleEvaluation of bradyrhizobia strains isolated from field-grown soybean plants in Argentina as improved inoculantses_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenInstituto de Fisiología y Recursos Genéticos Vegetaleses_AR
dc.description.filFil: Melchiorre, Mariana. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentinaes_AR
dc.description.filFil: De Luca, Marcos Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentinaes_AR
dc.description.filFil: Gonzalez Anta, Gustavo. Universidad Nacional del Noroeste de la Provincia de Buenos Aires; Argentinaes_AR
dc.description.filFil: Suarez, Paola Alejandra. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentinaes_AR
dc.description.filFil: Lopez, Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi. Agencia De Extensión Rural Río Primero; Argentinaes_AR
dc.description.filFil: Lascano, Hernán Ramiro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Lascano, Hernán Ramiro. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentinaes_AR
dc.description.filFil: Racca, Roberto Walter. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentinaes_AR
dc.subtypecientifico


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