1. U.S. Department of Agriculture, Agricultural Research Service, Southern Regional Research Center, New Orleans, LA 70124. Mention of trade names or commercial products in this article is solely for the purpose of providing specific information and does not imply recommendation of endorsement by the U.S. Department of Agriculture. USDA is an equal opportunity provider and employer.
2. Corresponding authors. Bett-Garber: Phone: (504) 286-4459. Fax: (504) 286-4419. E-mail: karen.bett@ars.usda.gov. Chen: Phone: (870) 672-9300. E-mail: ming.chen@ars.usda.gov
3. U.S. Department of Agriculture, Agricultural Research Service, Dale Bumpers National Rice Research Center, Stuttgart, AR 72160.