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Somatic hybrids between Solanum brevidens and Solanum tuberosum: Expression of a late blight resistance gene and potato leaf roll resistance

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Abstract

Hexaploid somatic hybrids resulting from mesophyll protoplast fusions between Solanum brevidens Phil., PI 218228, and Solanum tuberosum L., PI 203900 were tested for late blight resistance using two races of Phytophthora infestans Monte., de Bary. The S. tuberosum parent was a “late blight differential” possessing the R4 gene which confers resistance to race 0. The S. brevidens parent is resistant to potato leaf roll virus. Inoculations with both compatible (race 1.3.4.5) and incompatible (race 0) races of P. infestans clearly demonstrated the expression of the late blight resistance gene in all of the hybrid progeny tested. Most of the hybrids tested were also resistant to potato leaf roll virus (PLRV), indicating that the S. brevidens genes for PLRV resistance were present and expressed.

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Authors and Affiliations

  1. United States Department of Agriculture, University of Wisconsin, 1630 Linden Drive, 53706, Madison, WI, USA

    J. P. Helgeson & Geraldine T. Haberlach

  2. Department of Plant Pathology, ARS, University of Wisconsin, 1630 Linden Drive, 53706, Madison, WI, USA

    G. J. Hunt & Sandra Austin

Authors
  1. J. P. Helgeson
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  2. G. J. Hunt
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  3. Geraldine T. Haberlach
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  4. Sandra Austin
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Communicated by J. M. Widholm

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Helgeson, J.P., Hunt, G.J., Haberlach, G.T. et al. Somatic hybrids between Solanum brevidens and Solanum tuberosum: Expression of a late blight resistance gene and potato leaf roll resistance. Plant Cell Reports 5, 212–214 (1986). https://doi.org/10.1007/BF00269122

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  • DOI: https://doi.org/10.1007/BF00269122

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