1. Graduate research assistant and professor, respectively, Department of Grain Science and Industry, Kansas State University, Manhattan 66506.
2. Present address: Earth Grains Inc., 4649 LeBourget, St. Louis, MO 63134.
3. Present address: R&R Research Services Inc., 8831 Quail Lane, Manhattan, KS 66502.
4. Corresponding author. E-mail: r_and_r@kansas.net