This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
DW DeJong
Tobacco Research Laboratory, Plant Genetics and Germplasm Institute, Beltsville Agricultural Research Center, U.S. Department of Agriculture, Beltsville, Maryland, U.S.A.
JA Saunders
Tobacco Research Laboratory, Plant Genetics and Germplasm Institute, Beltsville Agricultural Research Center, U.S. Department of Agriculture, Beltsville, Maryland, U.S.A.