Crown rust resistance loci on linkage groups 4 and 13 in cultivated oat

would like to express appreciation to O'Donoughue et al. (1995) for the use of mapping data prior to publi-cation. We also thank M. Sorrells (Cornell University) for supplying the Kanota X Ogle mapping population and M. Lee for increasing the seed. We thank G. E. Och-ocki and K. J. Leonard, USDA-ARS, Cereal Rust Lab, St. Paul, Minnesota, for conducting virulence tests for iso-lates PC54 and PC59 on the current set of standard differentials. We also appreciate the technical assis-tance of S. Franck and M. Brown and review of the manuscript by R. Shoemaker and K. Lamkey. This re-search was supported in part by USDA-NR1/CGP grant AMD 93-37300-5770. A.L.B. was supported by a USDA-ARS postdoctoral research associateship. The data set is available from the authors upon request. Joint con