1. USDA, ARS, Southern Regional Research Center, New Orleans, Louisiana 70179, U.S.A.
2. USDA, ARS, Cotton Ginning Laboratory, Stoneville, Mississippi 38776, U.S.A.
3. USDA, ARS, Cotton Quality Research Station, Clemson, South Carolina 29631, U.S.A.
4. USDA, ARS, Southern Regional Research Center, New Orleans, Louisiana 70179 U.S.A.