1. Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108, USA
2. Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN 55108, USA
3. Granja Barrera Inc., Stratford, ON N5A 2Y7, Canada
4. USDA-ARS-Plant Germplasm Introduction and Testing Research Unit, Prosser, WA 99350, USA
5. USDA-ARS-Plant Science Research Unit, St. Paul, MN 55108, USA