Affiliation: | 1. Department of Plant Pathology, University of Kentucky, , Lexington, KY, 40546‐0091 USA;2. Department of Natural Resources and Environmental Sciences, University of Illinois, , Urbana, IL, 61821 USA;3. USDA Agricultural Research Service, , Urbana, IL, 61801 USA;4. Department of Crop Sciences, University of Illinois, , Urbana, IL, 61801 USA |