1. Wheat, Peanut and Other Field Crop Research Unit, USDA-ARS; Stillwater OK 74075
2. Hard Winter Wheat Genetics Research Unit, USDA-ARS; Manhattan KS 66506
3. Plant and Soil Science Dep.; Oklahoma State Univ.; Stillwater OK 74075
4. Agronomy Dep.; Henan Agricultural Univ.; 63 Nongye RD Zhengzou China 450002