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Phenotypic and symbiotic diversity of Rhizobia isolated from root nodules of Soybean [Glycine max (L.) Merrill] in Côte D’ivoire

Soybean [Glycine max (L.) Merrill] is a legume known for nitrogen fixation interacting with efficient Bradyrhizobium strains. In Côte d'Ivoire, the Bradyrhizobium inoculums used in soybean production is a foreign strain, which requires the search for indigenous strains adapted to Ivorian soils. The present study aimed to isolate and select rhizobial bacteria from soybeans grown on soils sampled from six localities in the central-western region of Côte d'Ivoire. Thirty bacteria were obtained from the nodules of plants grown on soils of two localities that had previously received soybean cultivation (Gonate North and South). These isolates were coded as RSC and identified as being able to genus Bradyrhizobium (slow growth) and Sinorhizobium (intermediate growth) depending on cultural and morphological characteristics. Except for RSC 327 and RSC 330, all isolates were authenticated and were able to nodulate the host plant in controlled culture. | Phenotypic and symbiotic diversity of Rhizobia isolated from root nodules of Soybean [Glycine max (L.) Merrill] in Côte D’ivoire