1. Rice Research and Extension Center, 2900 Highway 130 East, Stuttgart, AR 72160.
2. Corresponding author. Phone: 870-673-2661; Fax: 870-673-4315. E-mail: pcounce@uark.edu
3. National Rice Research Center, P.O. Box 1090, Stuttgart, AR 72160.
4. USDA-ARS, 1590 Aggie Drive, Beaumont, TX 77713.
5. Department of Food Sciences, University of Arkansas, 2650 North Young Drive, Fayetteville, AR 72701.