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Partial Characterization of a Colorado Isolate of Agropyron Mosaic Virus. Dallas L. Seifers, Plant Pathologist, Fort Hays Branch Agricultural Experiment Station, Hays, KS 67601. . Plant Dis. 76:564-569. Accepted for publication 19 December 1991. Copyright 1992 The American Phytopathological Society. DOI: 10.1094/PD-76-0564.

Wheat collected in Colorado was found to be infected with both wheat streak mosaic virus (WSMV) and Agropyron mosaic virus (AMV). The viruses were identified by means of host range tests, serology, and electrophoretic comparisons of coat proteins. The AMV isolates (the Colorado isolate and PV 75) were further characterized by partial chemical proteolysis of capsid proteins and electrophoretic analysis of cleavage products and by comparison of single-stranded and double-stranded RNAs. This is the first report of AMV in Colorado.