VIEW ARTICLE

Variation in Pathogenicity of Cephalosporium gregatum Isolates. L. E. Gray, Research Plant Pathologist, Plant Science Research Division, ARS, USDA, University of Illinois, Urbana 61801; Phytopathology 61:1410-1411. DOI: 10.1094/Phyto-61-1410.

Variation in pathogenicity of isolates of Cephalosporium gregatum is of two types. Type I isolates caused wilt symptoms on soybean cultivar Clark-63, and Type II isolates caused vascular browning but not wilt symptoms. On the resistant cultivar, P.I. 84.946-2, Type I isolates also caused more extensive vascular discoloration than did Type II isolates.