Weed Hosts of Beet Western Yellows Virus and Potato Leafroll Virus in British Columbia. P. J. Ellis, Agriculture Canada Research Station, 6660 NW Marine Drive, Vancouver, British Columbia, Canada V6T 1X2. . Plant Dis. 76:1137-1139. Accepted for publication 16 June 1992. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1992. DOI: 10.1094/PD-76-1137.

The vegetable production areas of British Columbia were surveyed to determine weed hosts of beet western yellows virus (BWYV) and potato leafroll virus (PLRV). More than 10,000 plant samples were tested for BWYV and PLRV; the enzyme-linked immunosorbent assay was used. Twelve species from five families were infected with BWYV. Four species, Cardamine oligosperma, Matricaria maritima, Polygonum lapathifolium, and Raphanus raphanistrum, had not previously been identified as hosts. PLRV was found in Capsella bursa-pastoris and Solanum nigrum, but neither of these hosts is considered an important reservoir of this virus in British Columbia.