Cooperators
 
 South Dakota State University
 
 J. Rudd, Department of Plant Science, Brookings, SD 56107 Y. Jin,
 Department of Plant Pathology, Brookings, SD 56107
 
 North Dakota State University
 
  R. Frohberg, Department of Plant Science, Fargo, ND 58105 R.
  Stack, Department of Plant Pathology, Fargo, ND 58105
 
 University of Minnesota
 
  R. Busch (Coordinator), USDA-ARS, Plant Science Unit, and G.
  Linkert, 411 Borlaug Hall, 1991 Buford Circle, St. Paul, MN,
  55108.
 
   H. Ma, J. Groth and R. Dill-Macky, Department of Plant
  Pathology, 495 Borlaug Hall, 1991 Buford Circle, St. Paul, MN
  55108.
 
 Agriculture and Agri-Food Canada
 
   F. Townley-Smith, J. Gilbert, Cereal Research Centre, AAFC, 195
  Defoe Rd., Winnipeg MB., Canada, R3T 2M9.