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Cyst Production by Two Geographical Isolates of Heterodera lespedezae on Selected Legumes. H. H. Fagbenle, Research Associate, Department of Plant Pathology, Oklahoma State University, Stillwater 74078. D. I. Edwards, Research Plant Pathologist, USDA, ARS, and R. B. Malek, Associate Professor of Nematology, Department of Plant Pathology, University of Illinois at Urbana-Champaign, Urbana 61801. Plant Dis. 70:643-644. Accepted for publication 29 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-70-643.

Cyst production by isolates of Heterodera lespedezae from Illinois and North Carolina populations was compared on 14 species of legumes. Twelve species were hosts for both isolates, ranging from good to very poor. There were significant differences between isolates on four species. The Illinois isolate produced more cysts on striate lespedeza and red clover and fewer cysts on alsike clover. The North Carolina isolate produced a few egg-bearing cysts on soybean, which was a nonhost for the Illinois isolate. Only common vetch was a nonhost for both isolates.

Keyword(s): biotypes, host range, lespedeza cyst nematode.