1. USDA/ARS, Biosciences Research Laboratory 1605 Albrecht Blvd., P.O. Box 5674, State University Station Fargo ND 58105
2. USDA/ARS Western Wheat Quality Laboratory Washington State University E‐202 Food Sci. & Human Nutrition Facility East, P.O. Box 646394 Pullman WA 99164‐6394