Slow Rusting of Wheat with Stem Rust Detected in the Glasshouse. I. Wahl, Faculty of Life Sciences, Tel Aviv University, Tel Aviv. Roy D. Wilcoxson and J. B. Rowell, Department of Plant Pathology, University of Minnesota, St. Paul 55108, and Agricultural Research, Science and Education Administration, U.S. Department of Agriculture. Plant Dis. 64:54-56. Accepted for publication 28 March 1979. 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, 1980. DOI: 10.1094/PD-64-54.

Race 15B2-TLM of Puccinia graminis f. sp. tritici produced significantly smaller colonies in seedlings of wheat accessions that rusted slowly, such as Thatcher, than in seedlings of accessions that rusted rapidly, such as Prelude. No significant differences in infectibility were noted in seedlings, but the rapidity with which uredia developed from flecks was significantly greater in seedlings of the fast-rusting accessions. Adult plants of slow-rusting wheats were significantly less receptive to the stem rust fungus than their fast-rusting counterparts.