Effect of amaranth on the growth of Rhizobium and Bradyrhizobium strains |
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Authors: | Grassano A. Ronchi A.L. Lorda G. Balatti A.P. |
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Affiliation: | (1) Programa de Microbiología y Química Agrícola. Departamento de Química. Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Uruguay 151, (6300) Santa Rosa. La Pampa, Argentina |
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Abstract: | The growth rate of different strains of Bradyrhizobium and Rhizobium was studied in media containing amaranth seed meal instead of yeast extract. Results obtained in erlenmeyer flasks and stirred fermenters show that both Bradyrhizobium japonicum strains E109, E110, 5019, 587 and Rhizobium melilotistrains B36, B323, B399, Lq22, Lq42, Lq51 and U322, grow satisfactorily in amaranth seed meal medium. Cell count obtained for the strains tested was greater than 4 × 1010 viable cells.ml–1. Amaranth seed meal (4 g.l–1) is a suitable component for culture media that can be used instead of yeast extract. |
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Keywords: | Amaranth Bradyrhizobium Culture media Inoculants Rhizobium |
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