1. United States Department of Agriculture-Agricultural Research Service, National Small Grain Germplasm Research Facility, P.O. Box 307, Aberdeen, Idaho 83210 (V.R., P.F.G., K.A.Y., S.D.S., S.G.P.);
2. Department of Chemistry, Michigan Technological University, Houghton, Michigan 49931 (A.T.B., P.P.N.M.);
3. Biology Department, University of North Dakota, Grand Forks, North Dakota 58202 (W.F.S.); and
4. Pioneer Hi-Bred International, P.O. Box 85, Johnston, Iowa 50131 (D.S.E.)