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Inheritance of Resistance to Pyrenophora teres in Minnesota Barley. Roy D. Wilcoxson, Professor, Department of Plant Pathology, University of Minnesota, St. Paul 55108. Donald C. Rasmusson, Linda M. Treeful, and Tarkus Suganda. Professor, Department of Agronomy and Plant Genetics, Former Research Assistant, and Research Scholar, University of Minnesota, St. Paul 55108. Plant Dis. 76:367-369. Accepted for publication 26 November 1991. Copyright 1992 The American Phytopathological Society. DOI: 10.1094/PD-76-0367.

Four hundred University of Minnesota barley breeding lines and cultivars were evaluated for resistance to net blotch caused by Pyrenophora teres f. teres in the glasshouse. Most of the barleys were susceptible but 50 were moderately resistant or resistant. The source of resistance was probably line ND B-112, which has been extensively used as a source of resistance because it is reported to be resistant to both spot and net blotches. The resistance appeared to be simply inherited and was probably conditioned by one gene, or perhaps two genes in some parents.