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Seedborne Cucumber Mosaic Virus in Selected Phaseolus vulgaris Germ Plasm and Breeding Lines in Idaho, Washington, and Oregon. R. F. Davis, Graduate Research Assistant, Department of Botany and Plant Pathology, Oregon State University, Corvallis 97331. Z. Weber and H. Pospieszny, Postdoctoral Fellows, and M. Silbernagel, Research Plant Pathologist, AR, SEA, USDA, Irrigated Agricultural Research and Extension Center, Prosser, WA 99350; and R. O. Hampton, Research Plant Pathologist, AR, SEA, USDA, Department of Botany and Plant Pathology, Oregon State University, Corvallis 97331. Plant Dis. 65:492-494. Copyright 1981 American Phytopathological Society. DOI: 10.1094/PD-65-492.

In 1978 and 1979, 259 bean plants (Phaseolus vulgaris) from principal bean breeding lines in Idaho, Washington, and Oregon were tested for seedborne cucumber mosaic virus. All plants were free of seedborne cucumber mosaic virus as determined by enzyme-linked immunosorbent assay, bioassay, or serology. By the same methods, seedborne cucumber mosaic virus was detected in one of 32 plant introduction bean accessions of international origin. Future monitoring for seedborne cucumber mosaic virus may be desirable in view of current international exchanges of bean germ plasm, which may disseminate this virus.