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    Rhizobium host specificities in phaseolus coccineus L. and phaseolus vulgaris L.

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    Date
    1982
    Author
    Hohenberg, J.S.
    Munns, D.N.
    Tucker, C.L.
    Type
    Journal Article
    Journal Article
    Metadata
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    Abstract/Description
    The introduction of desirable agronomic characteristics into Phaseolus vulgaris L. is being attempted by interspecific hybridization with P. coccineus, but the effects on root nodulation are unknown. Accordingly, cross-inoculation relationships between P. vulgaris ‘Red Kidney’ and P. coccineus ‘Scarlet Runner’ were tested in the greenhouse with a group of 16 Rhizobium strains effective on Red Kidney and a group of 12 strains effective on Scarlet Runner. Both groups had diverse origins, including commercial sources and isolations from bean fields and other sites in California. Only six strains, all isolates from Scarlet Runner, were effective on both hosts. Fifty percent of Scarlet Runner isolates were as effective on Red Kidney as the more effective of Red Kidney's homologous strains. Thirty percent of the California isolates tested on Red Kidney were more effective than two commercial inocula. Strain rejection in Red Kidney was expressed in 75% of all cases as failure to form nodules. In contrast, strain rejection by Scarlet Runner was expressed in 64 to 68% of all cases as ineffective nodulation (nodule malfunction). If Scarlet Runner is representative of P. coccineus in this respect, interspecific hybridization is likely to increase rather than reduce the tendency of P. vulgaris to nodulate with ineffective rhizobia.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/4235
    IITA Subjects
    Climate Change; Soil Information
    Agrovoc Terms
    Phaseolus Coccineus; Rhizobium; Phaseolus Vulgaris; Nodulation
    Regions
    Acp; South America
    Collections
    • Journal and Journal Articles4835
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