Summary
Some characteristics of the symbiotic nitrogen fixation by tetraploid red clover (UO36) have been studied in laboratory experiments. Cross-inoculations were made on tetraploid and diploid clover plants usingRhizobium isolates from both types of clover. Nodulation activity and nitrogen fixation were determined. No sign of specific strains necessary for optimal fixation of nitrogen by theUO36-symbiosis was observed in comparison to the diploid clover strain.Rhizobium cultures effective in connection with cultivation of diploid clover will probably also be effective when cultivating tetraploid clover strains.
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Nilsson, P.E., Rydin, C. Studies on symbiotic nitrogen fixation by a new strain of tetraploid red clover (UO36). Archiv. Mikrobiol. 20, 398–403 (1954). https://doi.org/10.1007/BF00690883
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DOI: https://doi.org/10.1007/BF00690883