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Inheritance of Horizontal Resistance to Crown Rust in Oats. H. H. Luke, Research Plant Pathologist, U.S. Department of Agriculture, Agricultural Research Service, Southern Region, Plant Pathology Department, University of Florida, Gainesville 32611; R. D. Barnett(2), and P. L. Pfahler(3). (2)Assistant Agronomist, Agricultural Research and Education Center, Quincy, Florida 32351; (3)Professor, Agronomy Department, University of Florida, Gainesville 32611. Phytopathology 65:631-632. DOI: 10.1094/Phyto-65-631.

Horizontal resistance to crown rust in Red Rustproof oats was found to be controlled by a small number (2.16) of genes, showing slight partial dominance for susceptibility. A high heritability value (87%) was found; therefore, selection should be effective.