Comparison of Host Ranges of Tilletia indica and T. barclayana. M. H. Royer, Research Plant Pathologist, Foreign Disease-Weed Science Research Unit, USDA-ARS, Fort Detrick, Building 1301, Frederick, MD 21701. J. Rytter, Biological Laboratory Technician, Foreign Disease-Weed Science Research Unit, USDA-ARS, Fort Detrick, Building 1301, Frederick, MD 21701. Plant Dis. 72:133-136. Accepted for publication 8 September 1987. 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, 1988. DOI: 10.1094/PD-72-0133.

Fifty-eight plant species representing 21 genera within 10 tribes of the Gramineae were tested for susceptibility to Tilletia indica isolates from India and/or Mexico. Most of the species susceptible to T. indica were inoculated with isolates of T. barclayana, of which Aegilops sharonensis was the only nonrice species susceptible to T. barclayana and T. indica. Several genera were susceptible to T. indica: Aegilops (11 of 16 species), Bromus (two of four species), Lolium (three of seven species), Oryzopsis (one of one species), and Triticum (three of five species). Different accessions of the same species were not all susceptible; in some instances, different cultures of the same pathogen varied in pathogenicity on a given plant accession.