1. USDA–ARS Dale Bumpers National Rice Research Center 2890 Hwy 130 E Stuttgart AR 72160 USA
2. USDA–ARS Small Grains and Potato Germplasm Research Aberdeen ID 83210 USA
3. Rice Research and Extension Center University of Arkansas Stuttgart AR 72160 USA
4. current address: Fisher Delta Research Center Univ. of Missouri 147 West State Highway T Portageville MO 63873 USA