1. Division of Plant Sciences and Bond Life Sciences Center, University of Missouri, Columbia, Missouri 65211
2. Department of Plant, Soil, and Agricultural Systems, Southern Illinois University, Carbondale, Illinois 62901
3. Mathematics and Computer Science Department, Fontbonne University, St. Louis, Missouri 63105
4. Department of Computer Science and Bioinformatics and Computational Biology Program, Worcester Polytechnic Institute, Worcester, Massachusetts 01609
5. Center for Applied Genetic Technologies, University of Georgia, Athens, Georgia 30602
6. Department of Agronomy, Iowa State University, Ames, Iowa 50011