1. University of Missouri–Fisher Delta Research Center 147 State Hwy T Portageville MO 63873 USA
2. Division of Plant Sciences Univ. of Missouri Columbia MO 65211 USA
3. Dep. of Crop and Soil Sciences Univ. of Georgia Athens GA 30602 USA
4. Dep. of Plant Pathology Univ. of Georgia Athens GA 30602 USA
5. College of Agricultural Sciences Southern Illinois Univ. Carbondale IL 62901 USA
6. USDA–ARS Crop Genetics Research Unit 141 Experiment Station Rd, P.O. Box 345 Stoneville MS 38776 USA
7. USDA–ARS Crop Genetics Research Unit 650 Airways Boulevard Jackson TN 38301 USA
8. Dep. of Plant Pathology Univ. of Arkansas Fayetteville AR 72701 USA