Summary
Plants ofSolanum brevidens graft-inoculated with potato leaf roll virus (PLRV) grew vigorously and had a normal healthy appearance. Although presence of the virus was confirmed in all inoculated plants by graft tests to potato and/orDatura stramonium, recovery of PLRV fromS. brevidens PI 218228 usingPhysalis floridana and the aphidMyzus persicae was erratic and only few test seedlings became infected. Ease of recovery of the virus using aphids was not influenced by presence of a continuous graft union with infected potato. Testing ofS. brevidens PI 245763 withM. persicae was not possible due to poor aphid survival on plants of this accession.
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References
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Jones, R.A.C. Resistance to potato leaf roll virus inSolanum brevidens . Potato Res 22, 149–152 (1979). https://doi.org/10.1007/BF02366944
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DOI: https://doi.org/10.1007/BF02366944