1. Dep. of Agronomy and Horticulture Univ. of Nebraska–Lincoln Lincoln NE USA
2. Dep. of Agronomy and Plant Genetics Univ. of Minnesota St. Paul MN USA
3. USDA–ARS, Soybean Genomics and Improvement Lab Beltsville MD USA
4. Dep. of Plant Sciences Univ. of Tennessee Knoxville TN USA