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Competitiveness of Bradyrhizobium japonicum inoculation strain for soybean nodule occupancy

Author

Listed:
  • Dragana Miljaković
  • Jelena Marinković

    (Institute of Field and Vegetable Crops, Novi Sad, Serbia)

  • Maja Ignjatov

    (Institute of Field and Vegetable Crops, Novi Sad, Serbia)

  • Dragana Milošević

    (Institute of Field and Vegetable Crops, Novi Sad, Serbia)

  • Zorica Nikolić

    (Institute of Field and Vegetable Crops, Novi Sad, Serbia)

  • Branislava Tintor

    (Institute of Field and Vegetable Crops, Novi Sad, Serbia)

  • Vojin Đukić

    (Institute of Field and Vegetable Crops, Novi Sad, Serbia)

Abstract

The competitiveness of Bradyrhizobium japonicum inoculation strain against indigenous rhizobia was examined in a soil pot experiment. The effect of inoculation strain was evaluated under different soil conditions: with or without previously grown soybean and applied commercial inoculant. Molecular identification of inoculation strain and investigated rhizobial isolates, obtained from nodules representing inoculated treatments, was performed based on 16S rDNA and enterobacterial repetitive intergenic consensus (ERIC) sequencing. Inoculation strain showed a significant effect on the investigated parameters in both soils. Higher nodule occupancy (45% vs. 18%), nodule number (111% vs. 5%), nodule dry weight (49% vs. 9%), shoot length (15% vs. 7%), root length (31% vs. 13%), shoot dry weight (34% vs. 11%), shoot nitrogen content (27% vs. 2%), and nodule nitrogen content (9% vs. 5%) was detected in soil without previously grown soybean and applied commercial inoculant. Soil had a significant effect on the shoot, root and nodule nitrogen content, while interaction of experimental factors significantly altered dry weight and nitrogen content of shoots, roots and nodules, as well as number of nodules. Nodulation parameters were significantly related with shoot dry weight, shoot and nodule nitrogen content. Symbiotic performance of inoculation strains in the field could be improved through co-selection for their competitiveness and effectiveness.

Suggested Citation

  • Dragana Miljaković & Jelena Marinković & Maja Ignjatov & Dragana Milošević & Zorica Nikolić & Branislava Tintor & Vojin Đukić, 2022. "Competitiveness of Bradyrhizobium japonicum inoculation strain for soybean nodule occupancy," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 68(1), pages 59-64.
    • Handle: RePEc:caa:jnlpse:v:68:y:2022:i:1:id:430-2021-pse
    DOI: 10.17221/430/2021-PSE
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    References listed on IDEAS

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    1. Anne Griebsch & Nicole Matschiavelli & Sylwia Lewandowska & Knut Schmidtke, 2020. "Presence of Bradyrhizobium sp. under Continental Conditions in Central Europe," Agriculture, MDPI, vol. 10(10), pages 1-17, September.
    2. T. Šimon & J. Salava, 2006. "New Rhizobium leguminosarum bv. trifolii isolates: Evaluation of competitiveness for clover nodule occupancy," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 52(10), pages 441-448.
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