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1. Verfasser: Dâmiany Pádua Oliveira
Format: Artículo científico
Sprache:en
Veröffentlicht: Universidade Estadual de Maringá 2022
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Online-Zugang:https://www.redalyc.org/articulo.oa?id=303071489001
https://www.redalyc.org/journal/3030/303071489001/
https://www.redalyc.org/journal/3030/303071489001/html/
https://www.redalyc.org/journal/3030/303071489001/303071489001.epub
https://www.redalyc.org/journal/3030/303071489001/movil
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  • Inoculation with Rhizobium tropici can totally replace N-fertilization in the recently released BRSMG Uai bean cultivar Dâmiany Pádua Oliveira Márcia Rufini Fábio Aurélio Dias Martins Jacqueline Savana da Silva Osnar Obede da Silva Aragão Márcio José de Santana Messias José Bastos de Andrade Fatima Maria de Souza Moreira Agrociencias Phaseolus vulgaris symbiotic efficiency management of N sources biological nitrogen fixation The BRSMG Uai common bean cultivar (Phaseolus vulgaris L.) unites traits required by producers, such as high yield and upright stands, the latter of which is considerably improved in relation to previously released cultivars such as BRSMG Madrepérola and Pérola. However, the potential of the cultivar to form symbiotic relationships with rhizobia to fix N2 has not yet been assessed. Here, field experiments were conducted to assess the efficiency of biological nitrogen fixation (BNF) in the cultivar, and to compare this to the efficiencies of other genetic materials widely grown throughout Brazil (BRSMG Madrepérola and Pérola). Experiments were conducted on two Oxisols in Minas Gerais State, Brazil (one during the dry season in the south, and the other during the winter season in the Alto-Paranaíba region), under a no-tillage system over maize stover. A randomized block experimental design was implemented in a 3 × 3 factorial arrangement with four replicates. Individual and combined Analysis of Variance were performed and the data were normalized. Homogeneity of the residual mean squares was observed. Significant effects of factors were identified by Scott-Knott tests and F tests. The BRSMG Uai cultivar responded to inoculation with the rhizobial strain CIAT 899, with yields similar to those achieved upon fertilization with 80 kg ha-1 of N-urea and to the yields of the BRSMG Madrepérola and Pérola cultivars inoculated with the same rhizobial strain. In terms of commercial use, this cultivar may be successful under either of the management practices adopted for N supply, and from the perspective of plant breeding, it has potential for inclusion in breeding programs directed toward improving BNF. 2022 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303071489001 https://www.redalyc.org/journal/3030/303071489001/ https://www.redalyc.org/journal/3030/303071489001/html/ https://www.redalyc.org/journal/3030/303071489001/303071489001.epub https://www.redalyc.org/journal/3030/303071489001/movil 10.4025/actasciagron.v44i1.52475 en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Vol.44