Differentiation of Ustilago scitaminea Isolates in Greenhouse Tests. A. G. Gillaspie, Jr., Research Plant Pathologist, Beltsville Agricultural Research Center, ARS, USDA, Beltsville, MD 20705. R. G. Mock, Plant Pathologist, Beltsville Agricultural Research Center, ARS, USDA, Beltsville, MD 20705, and J. L. Dean, Research Plant Pathologist, U.S. Sugarcane Field Station, ARS, USDA, Canal Point, FL 33438. Plant Dis. 67:373-375. Accepted for publication 27 August 1982. 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, 1983. DOI: 10.1094/PD-67-373.

Seven sugarcane (Saccharum interspecific hybrids) clones were inoculated in a containment greenhouse by hypodermic injection with Ustilago scitaminea teliospores obtained from Argentina, Florida, Hawaii, Taiwan, and Zimbabwe. Seven months after inoculation, six different isolates (races) could be differentiated on five of the clones under greenhouse conditions.