Jeffrey H. Gillman1 and David C. Zlesak2 Department of Horticultural Science, University of Minnesota, St. Paul, MN 55108 Received for Publication 25 Aug. 1999. Accepted for Publication 1 Dec. 1999. Minnesota Experiment Station # 981210039. The authors would like to thank Erica Davis and Robert Ford for technical assistance. The cost of publishing this paper […]