1. School of Food Science; Washington State Univ; Pullman WA 99164 U.S.A
2. USDA-ARS Western Wheat Quality Laboratory; E-202 Food Quality Building; Washington State Univ; Pullman WA 99164 U.S.A
3. Dept. of Crop and Soil Sciences; Washington State Univ; Pullman WA 99164 U.S.A