1. Department of Botany, Oklahoma State University, Stillwater, Oklahoma 74078 (I.T., R.P.M., M.B., R.R., S.H., T.C.S., D.M.); Virginia Bioinformatics Institute, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 (A.D.); and Syngenta Biotechnology, Inc., Research Triangle Park, North Carolina 27709 (J.M., G.A., D.P.)