1. Soil Management and Sugar Beet Research Unit; USDA-ARS; Fort Collins CO USA
2. Plant and Animal Genetic Resources Preservation Unit, National Laboratory for Genetic Resource Preservation; USDA-ARS; Fort Collins CO USA
3. USDA-ARS Plains Area; College Station TX USA
4. Department of Plant Pathology, Fungal Genetics Stock Center; Kansas State University; Manhattan KS USA