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Comparison of Tobacco Vein Mottling and Pepper Veinal Mottle Viruses. T. P. Pirone, Professor, Department of Plant Pathology, University of Kentucky, Lexington 40546. . Plant Dis. 73:336-339. Accepted for publication 30 December 1988. Copyright 1989 The American Phytopathological Society. DOI: 10.1094/PD-73-0336.

Cross-inoculation tests with tobacco and peppers showed that tobacco vein mottling virus (TVMV) infected tobacco but not peppers, whereas the type strain and three other strains of pepper veinal mottle virus (PVMV) infected peppers but caused limited, if any, systemic infection of tobacco. Serological tests readily differentiated TVMV and PVMV. One PVMV isolate (NTV) resembled TVMV in that it infected tobacco but not peppers. Serological tests showed the NTV isolate to be closely related to PVMV and only distantly related to TVMV. A newly introduced TVMV-resistant tobacco cultivar, Tennessee 86, varied in its response to the PVMV strains.

Keyword(s): aphid transmission, potyvirus resistance.