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Resistance of potato to infection by mechanically introduced virus X

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Summary

Progeny in the cross of susceptible X 927-3 (female) potato by susceptible B 2903-17 (male) were found to possess resistance to infection by virus X mechanically inoculated into Irish potato. Preliminary evidence indicated a close similarity to or identity with the immunity from virus X demonstrated by 41956. Examination of the pedigrees of parental lines and the pedigree of 41956 showed several similarities, but no common source of resistance was involved, unless it be the USDA Seedling 24642. Previously proposed theories of the origin of immunity from virus X were discussed, and the authors suggest that although their findings can be explained by a dominant complimentary gene theory, insufficient information is available to support either this or the recessive gene theory.

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Authors and Affiliations

  1. Crops Research Division, Agricultural Research Service, United States Department of Agriculture, Beltsville, Maryland

    August E. Kehr (Horticulturist)

  2. Plant Pathology, Iowa State University, Ames, Iowa

    James C. Horton (Associate Professor)

Authors
  1. August E. Kehr
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  2. James C. Horton
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Additional information

Journal Paper No. J-3691 of the Iowa Agricultural and Home Economics Experiment Station, Ames, Iowa, Project No. 1184.

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Kehr, A.E., Horton, J.C. Resistance of potato to infection by mechanically introduced virus X. American Potato Journal 37, 61–66 (1960). https://doi.org/10.1007/BF02855061

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  • DOI: https://doi.org/10.1007/BF02855061

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