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Resistance

Virus Content as an Index of Symptomatic Resistance to Barley Yellow Dwarf Virus in Cereals. Mani Skaria, Graduate research assistant, Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA; Richard M. Lister(2), John E. Foster(3), and Gregory Shaner(4). (2)(4)Professor, and professor, respectively, Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA; (3)Associate professor, Department of Entomology and research entomologist USDA, ARS, Purdue University, West Lafayette, IN 47907, USA. Phytopathology 75:212-216. Accepted for publication 9 October 1984. Copyright 1985 The American Phytopathological Society. DOI: 10.1094/Phyto-75-212.

Barley yellow dwarf virus (BYDV) content in extracts from cereals grown in the greenhouse, growth chamber, or field was measured by enzyme-linked immunosorbent assay. The results showed that, for some of the virus/host combinations tested, symptomatic “resistance” to BYDV as previously determined by plant breeders was associated with reduced virus productivity in infected plants. Although this effect was cultivar-specific and virus isolate-specific, it could be a valuable adjunct in breeding for BYDV resistance and management in cereals and deserves more extensive investigation. Suggested procedures for this are outlined.