Three Pea Seedborne Mosaic Virus Pathotypes from Pea and Lentil Germ Plasm. R. Alconero, Germplasm Resources, Northeast Regional Plant Introduction Station, USDA, ARS. R. Provvidenti, and D. Gonsalves, Department of Plant Pathology, Cornell University, New York State Agricultural Experiment Station, Geneva 14456. Plant Dis. 70:783-786. Accepted for publication 27 January 1986. 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, 1986. DOI: 10.1094/PD-70-783.

Three isolates of pea seedborne mosaic virus (PSbMV), P-1 and P-4 from pea (Pisum sativum) and L-1 from lentil (Lens culinaris) germ plasm accessions, were distinguished by their capacity to infect pea genotypes. Resistance in peas was isolate-specific. Resistance to the L-1 isolate was associated with bean yellow mosaic virus resistance and also with a delayed reaction to isolate P-4. Several pea germ plasm accessions were resistant to all three isolates. All isolates were infective to 26 genetic lines of chickpea (Cicer arietinum), a new host, but not to 12 accessions of pigeon pea (Cajanus cajan). Antisera produced against the cytoplasmic inclusion protein induced in peas by P-1 and L-1 were useful in detecting infections by the indirect ELISA method and were generally more sensitive than antisera to the viral protein.