1. Department of Agronomy (E.C., G.D., J.G., M.M., M.P., H.S.-V.),
2. Agricultural Research Service, United States Department of Agriculture, Columbia, Missouri (E.C., M.M., M.P.);
3. Division of Biological Sciences (K.C., E.L.), and
4. Department of Computer Engineering/Computer Science (S.C.), University of Missouri, Columbia, Missouri;
5. University of Georgia, Athens, Georgia (A.P.)
6. Clemson University, Clemson, South Carolina (C.S., R.W.); and