Effect of a Soybean Genotype Resistant to Soybean Mosaic Virus on Transmission-Related Behavior of Aphid Vectors. U. B. Gunasinghe, Graduate Student, Department of Plant Pathology, University of Illinois, Urbana 61801. M. E. Irwin, Associate Professor, Office of Agricultural Entomology, University of Illinois, Champaign 61820; and R. L. Bernard, Research Geneticist, USDA, ARS, and Professor of Plant Genetics, University of Illinois, Urbana 61801. Plant Dis. 70:872-874. Accepted for publication 14 February 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-70-872.

The probing behavior of Myzus persicae (Homoptera: Aphididae) on soybean cultivar Clark 63 (susceptible to infection by soybean mosaic virus) and its isoline L78-434 (similar to Clark except resistant to infection by soybean mosaic virus) was observed under a dissecting microscope. No differences were observed in the number of probes, the duration of each probe, or probing time within a 10-min period. Landing rates of aphid vector species on the cultivar and its isoline were monitored in a field experiment. No significant differences in landing rates were observed.