1. USDA‐ARSCrop Genetics Research UnitStonevilleMS38776
2. Dep. of Plant and Soil SciencesTexas Tech Univ.LubbockTX79409‐2122
3. Dep. of Textiles and ApparelUniv. of Texas at AustinAustinTX
4. Dep. of Soil and Crop Sciences, Texas Agric. Exp. Stn.Texas A&M Univ. SystemCollege StationTX77843‐2474
5. Monsanto800 North Lindbergh Blvd.St. LouisMO63167‐0001