1. Department of Genetics and Biochemistry, Clemson University, 314 Biosystems Research Complex, 105 Collings Street, Clemson, South Carolina 29634
2. Department of Plant and Environmental Sciences, Clemson University, 306B Biosystems Research Complex, 105 Collings Street, Clemson, South Carolina 29634
3. School of Computing, Clemson University, 210 McAdams Hall, Clemson, South Carolina 29634
4. Center for Integrated Breeding Research, University of Göttingen, D-37075 Göttingen, Germany
5. Department of Agronomy, University of Wisconsin, 1575 Linden Drive, Madison, Wisconsin 53706
6. Department of Mathematical Sciences, Clemson University, O-117 Martin Hall, Clemson, South Carolina 29634