Pea Enation Mosaic Virus Resistance in Lentil (Lens culinaris). H. Aydin, Graduate Assistant, Washington State University, Pullman 99164. F. J. Muehlbauer, and W. J. Kaiser. Research Geneticist, USDA-ARS, and Research Plant Pathologist, USDA-ARS, Washington State University, Pullman 99164. Plant Dis. 71:635-638. Accepted for publication 24 November 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, 1987. DOI: 10.1094/PD-71-0635.

Twenty-nine lentil (Lens culinaris) plant introduction (PI) accessions or cultivars were screened for resistance to pea enation mosaic virus (PEMV). All 29 lines were susceptible and showed significant plant height and biological yield reductions when mechanically inoculated. PI 472547 and PI 472609, however, were tolerant as indicated by the lower disease scores obtained when the lines were inoculated by aphids. Also, these two lines showed significantly less reduction in plant height and biological yield attributable to virus infection than the other 27 lines. Accessions of three wild Lens species, L. orientalis, L. nigricans, and L. ervoides, were also susceptible when mechanically inoculated or inoculated by aphids. The tolerant lines that were identified should provide germ plasm for breeding improved cultivars.