Affiliation: | (1) Pioneer Hi-Bred International, 7300 NW 62nd Ave., P.O. Box 1004, 50131 Johnston, Iowa, USA;(2) Department of Agronomy and Plant Genetics, Plant Molecular Genetics Institute, University of Minnesota, 411 Borlaug Hall, 1991 Buford Circle, 55108 St. Paul, MN, USA;(3) Florist and Nursery Plant Research, U.S. National Arboretum, USDA/ARS, Barc-W, 20705 Beltsville, MD, USA |