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A New Strain of Andean Potato Mottle Virus from Brazil. A. C. Avila, Virologist, CNPH, Brasilia, D. F. Brazil International Potato Center, Apartado 5969, Lima, Peru. L. F. Salazar, Virologist, and M. Ortega, Visiting Research Assistant, International Potato Center, Apartado 5969, Lima, Peru; and J. Daniels, Virologist, UEPAE-Cascata, Pelotas, RG, Brazil. Plant Dis. 68:997-998. Accepted for publication 29 May 1984. Copyright 1984 The American Phytopathological Society. DOI: 10.1094/PD-68-997.

The host range of a virus causing severe mosaic and crinkle of potato plants in Santa Catarina, Brazil, was similar to that of Andean potato mottle virus (APMV). Comparative host range with two strains of APMV, serological studies, and other properties indicated that the virus from Brazil (APMV-B) is a different strain. This virus caused more severe symptoms in host plants, and symptoms in potato can be confused with those induced by other potato viruses.