1. Plant Genetics Research, USDA-Agricultural Research Service, University of Missouri, Columbia, Missouri 65211, United States
2. College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China
3. Soybean Genomics and Improvement Laboratory, USDA-ARS, Beltsville, Maryland 20705, United States
4. Animal Bioscience and Biotechnology Laboratory, USDA-Agricultural Research Service, Beltsville 20705, United States