1. United States Department of Agriculture, Agricultural Research Service (USDA, ARS), Crop Genetics Research Unit, 141 Experiment Station Rd., Stoneville, MS 38776, USA
2. USDA, Animal and Plant Health Inspection Service (APHIS), Plant Protection and Quarantine (PPQ), Plant Germplasm Quarantine Program (PGQP), Beltsville, MD 20708, USA
3. USDA, ARS, Soybean Genomics and Improvement Laboratory, Beltsville Agriculture Research Center, Beltsville, MD 20705, USA