1. Department of Biology, C.B. 3280 Coker Hall, University of North Carolina, Chapel Hill, North Carolina 27599-3280
2. Department of Molecular Biology, DLO Centre for Plant Breeding and Reproduction Research, Postbus 16, 6700AA, Wageningen, The Netherlands
3. Biotechnology and Genomics Center, Novartis Crop Protection, Inc., Research Triangle Park, North Carolina 27709-2257
4. Director's Research Group, Horticulture Research International, Wellesbourne, Warwickshire, CV35 9EF, United Kingdom
5. Curriculum in Genetics and Molecular Biology, C.B. 3280 Coker Hall, University of North Carolina, Chapel Hill, North Carolina 27599-3280