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Etiology

Tomato Scorch, a New Virus Disease of Tomatoes. R. L. Clark, Professor of agronomy, Iowa State University (ISU), North Central Regional Plant Introduction Station (NCRPIS), Ames, IA 50011; J. H. Hill(2), and M. D. Ellis(3). (2)Research plant pathologist, Agricultural Research, Science and Education Administration, U. S. Department of Agriculture, North Central Regional Plant Introduction Station (NCRPIS), Ames, IA 50011; (3)Associate professor of plant pathology, Department of Botany and Plant Pathology, ISU, Ames IA 50011; and research associate, Department of Agronomy, ISU, NCRPIS. Phytopathology 70:131-134. Accepted for publication 24 August 1979. 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, 1980. DOI: 10.1094/Phyto-70-131.

A new virus disease of tomato, with symptoms characterized by mosaic, epinasty, and terminal necrosis of branches and leaflets, was found to be caused by coinfection of plants by tobacco mosaic and potato Y viruses. Identification of the viruses was based on host range, serology, electron microscopy, physical properties, and aphid transmission.