Maize Dwarf Mosaic Virus Transmission by Greenbug Biotypes. P. H. Berger, Research Technician, Department of Plant Sciences, Texas A&M University, Texas Agricultural Experiment Station, College Station, TX 77843. R. W. Toler, Professor, Department of Plant Sciences, and K. F. Harris, Associate Professor, Department of Entomology, Texas A&M University, Texas Agricultural Experiment Station, College Station, TX 77843. Plant Dis. 67:496-497. Accepted for publication 12 October 1982. Copyright 1983 American Phytopathological Society. DOI: 10.1094/PD-67-496.

A new biotype (biotype E) of the greenbug, Schizaphis graminum, was compared with biotype C as a vector of the A and B strains of maize dwarf mosaic virus (MDMV-A and MDMV-B). Two isolates of MDMV-A and one isolate of MDMV-B were tested. Biotype E was more efficient than biotype C as a vector of one MDMV-A isolate. Biotype E greenbugs were more efficient than biotype C as vectors of MDMV-B.

Keyword(s): aphids, sorghum.