Developing a breeding strategy to exploit quantitative variation in symbiotic nitrogen fixation |
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Authors: | L. R. Mytton |
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Affiliation: | (1) Welsh Plant Breeding Station, Aberystwyth, UK |
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Abstract: | Summary This paper examines evidence which quantifies the relative importance of legume and Rhizobium genotypes as determinants of phenotypic variation in symbiotic nitrogen fixation. It demonstrates potentially large and unpredictable effects of the Rhizobium genotype. The likely importance of such effects on crop yield is considered. The information is then used to assess ways in which legume breeding programmes may be altered to encompass the effects of genetic variation in Rhizobium. |
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Keywords: | Legume breeding Medicago sativa Nitrogen fixation Rhizobium Trifolium repens Vicia faba |
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