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Etiology

Comparative Pathogenicity of Septoria nodorum Isolated from Triticum aestivum and Agropyron Species. J. M. Krupinsky, Plant pathologist, USDA, ARS, Northern Great Plains Research Center, P.O. Box 459, Mandan, ND 58554; Phytopathology 72:660-661. Accepted for publication 14 September 1981. 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, 1981.. DOI: 10.1094/Phyto-72-660.

Septoria nodorum was isolated from Agropyron cristatum, A. desertorum, a hybrid of A. cristatum × A. desertorum, a hybrid of A. repens × A. desertorum, A. intermedium, A. smithii, and Triticum aestivum. The isolates from Agropyron spp. could not be distinguished from isolates from T. aestivum in cultural growth, spore production, or size of pycnidiospores. The S. nodorum isolates from the Agropyron spp. infected wheat plants, but did not induce as much damage as isolates from T. aestivum. S. nodorum has not been reported previously neither on A. cristatum, A. desertorum, or A. intermedium nor on the two interspecific hybrids.