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Serologically and Biologically Distinct Bean Yellow Mosaic Virus Strains. R. T. Jones, Department of Plant Pathology, University of Kentucky, Lexington, KY 40506; Stephen Diachun, Department of Plant Pathology, University of Kentucky, Lexington, KY 40506. Phytopathology 67:831-838. Accepted for publication 28 December 1976. Copyright 1977 The American Phytopathological Society, 3340 Pilot Knob Road, St. Paul, MN 55121. All rights reserved.. DOI: 10.1094/Phyto-67-831.

Bean yellow mosaic virus (BYMV) isolates from various locations in the USA and Europe could be classified in three distinct subgroups on the basis of serological and biological differences. Within each major subgroup were isolates that shared common host range and antigenic characteristics but which could be distinguished on the basis of numerous minor host range differences. Two of the BYMV subgroups appear to occur primarily in different natural hosts (red or white clover). A natural basis for BYMV subgroups would enable predictions about expected occurrence and severity in different leguminous crops.

Additional keywords: clover yellow vein virus, agar double diffusion, differential hosts.