1. USDA, ARS, Dale Bumpers National Rice Research Center, P.O. Box 287, Stuttgart, AR 72160. Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and the use of the name by the USDA implies no approval of the product to the exclusion of others that may also be suitable.
2. Corresponding author. Phone: 870-672-9300 (Ext. 227), Fax: 870-673-7581, Email address: rbryant@spa.ars.usda.gov
3. USDA, ARS, Southern Regional Research Center, 1100 Robert E. Lee Blvd., New Orleans, LA 70124.
4. USDA, REE, ARS, Beltsville Area, Office of the Director, Bldg, 001, BARCWEST RM 010, 10300 Baltimore Blvd., Beltsville, MD 20705.
5. USDA, ARS, Mid South Area Office, P.O. Box 225, Stoneville, MS 38776.