1. Dept. of Crop Science, North Carolina State University, Box 7620, Raleigh, NC 27695
2. Dupont-Pioneer 7300 NW 62nd Avenue P.O Box 1004 Johnston, IA, 50131-1004
3. Dept. of Plant and Soil Sciences, University of Delaware, Newark, DE 19716
4. Department of Plant Pathology and Plant-Microbe Biology Cornell University, Ithaca, NY 14853
5. ICAR-Indian Institute of Maize Research, Indian Council of Agricultural Research, Pusa Campus, New Delhi 110 012, India
6. School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA 24061
7. Dept. of Entomology and Plant Pathology, North Carolina State University, Box 7616 Raleigh, NC 27695
8. Plant Science Research Unit, USDA-ARS, Raleigh NC 27695-7616