Institution: | (1) Pioneer Hi-Bred International, Inc., 7300 NW 62nd Ave., Johnston, IA, 50131;(2) Amgen Inc, 14-2-C Amgen center, Thousand Oaks, CA, 91230;(3) Department of Horticulture, 306 Wartik Laboratory, Biotechnology Institute, Pennsylvania State University, University Park, PA 16802, USA |