Resistance to Peanut Stripe Virus in Arachis Germ Plasm. J. N. Culver, Department of Plant Pathology, Oklahoma State University, Stillwater 74078-0285. J. L. Sherwood, and H. A. Melouk. Department of Plant Pathology, Oklahoma State University, Stillwater 74078-0285, and USDA-ARS, Stillwater, OK. Plant Dis. 71:1080-1082. Accepted for publication 30 June 1987. 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, 1987. DOI: 10.1094/PD-71-1080.

Peanut accessions of the Arachis section, A. diogoi (PI 468141 and PI 468142), A. helodes (PI 468144), Arachis sp. (PI 468345 and PI 468169), and of the Rhizomatosae section (PI 468174, PI 468363, and PI 468366) were evaluated for resistance to peanut stripe virus (PStV). These entries and a susceptible cultivar (Argentine) were mechanically inoculated with PStV. Three to 4 wk after inoculation, both inoculated and subsequently formed leaves from each entry were tested for PStV infection. Symptomatology, local lesion assay on Chenopodium amaranticolor, enzyme-linked immunosorbent assay, and electron microscopy were used to evaluate susceptibility or resistance. This inoculation and testing sequence was repeated three times for each entry. All entries except PI 468169 and the susceptible cultivar Argentine were negative for virus infection. To our knowledge, this is the first report of resistance to PStV in Arachis.