University of Minnesota National IPM Network Consortium for International Crop Protection

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Roger H. Ratcliffe

Breeding for Hessian Fly Resistance in Wheat.

Research Entomologist, Lead Scientist of Entomology Research Laboratory, USDA, ARS, Crop Protection and Pest Control Research Unit, W. Lafayette, IN.
Adjunct Associate Professor, Department of Entomology,
Purdue University.

1158 Smith Hall
Purdue University
West Lafayette, IN 47907-1158
Phone: 765-494-4606
FAX: 765-494-5105

e-mail: roger_ratcliffe@entm.purdue.edu

Education
Ph.D., Entomology, University of Maryland, College Park, MD, 1973
M. S., Entomology, University of Maryland, College Park, MD, 1959
B. S., Agronomy, Kansas State University, Manhattan, KS, 1954


Research interests
Host plant resistance to insects, insect/plant interactions, insect biotype selection associated with plant resistance, insect pests of cereal, forage and turfgrass crops, with emphasis on management with plant resistance. Present research emphasis is on Hessian fly resistance in wheat and wheat relatives including evaluation of new sources of germplasm for Hessian fly resistance, the study of mechanisms and genetics of Hessian fly resistance in wheat germplasm and cultivars, the status of Hessian fly biotype development and response of biotypes and field populations to resistance genes, and the influence of insect infestation level, plant genetic background, temperature, etc. on the expression of resistance to the Hessian fly.


Selected Publications
Leath, K.T. and R.H. Ratcliffe. 1973. The effect of fertilization on disease and insect resistance. Proc. Forage Fertilization Symposium, pp. 481-503. Published by Amer. Agronomy Soc.
Ratcliffe, R.H. 1982. Evaluation of cool-season turfgrasses for resistance to the hairy chinch bug. pp. 13-18. In Niemczyk, H.D. and Joyner, B.G. (eds). Advances in Turfgrass Entomology, Hammer Graphics, Inc. Piqua, OH. p. 149.
Ratcliffe, R.H. and A.J. Oakes. 1982. Yellow sugarcane aphid resistance in selected Digitaria germplasm. J. Econ. Entomol. 75:308-314.
Ratcliffe, R.H. and J. J. Murray. 1983. Selection for greenbug (Homoptera:Aphididae) resistance in Kentucky bluegrass cultivars. J. Econ. Entomol. 76:1221-1224.
Ratcliffe, R.H. and J. H. Elgin, Jr. 1987. A seedling test to select for alfalfa weevil (Coleoptera: Curculionidae) resistance in alfalfa. J. Econ. Entomol. 80: 975-978.
Manglitz, G.R. and R. H. Ratcliffe. 1988. Insects and Mites. pp. 671-704. In Hanson, A.A., Barnes, D.K. and Hill, R.R., Jr. (eds). Alfalfa and Alfalfa Improvement, ASA Monograph 29.
Mathias, J.K., R. H. Ratcliffe and J. L. Hellman. 1990. Association of an endophytic fungus in perennial ryegrass and resistance to the hairy chinch bug (Hemiptera: Lygaeidae). J. Econ. Entomol. 83: 1640-1646.
Ratcliffe, R.H. and J. H. Elgin, Jr. 1990. Turkish alfalfa cultivars screened for alfalfa weevil resistance. Crop Sci. 30: 994-996.
Ratcliffe, R.H. 1992. Methods of Research in Turfgrass Entomology. pp. 689-729. In (eds.) Turfgrass Science, ASA Monograph 32.
Ratcliffe, R.H., G. G. Safranski, F. L. Patterson, H. W. Ohm and P. L. Taylor. 1994. Biotype status of Hessian fly (Diptera: Cecidomyiidae) populations from the Eastern United States and their response to 14 Hessian fly resistance genes. J. Econ. Entomol. 87: 1113-1121.
Ratcliffe, R.H. and T. A. Campbell. 1995. Selection within wild Turkish alfalfa germplasm for alfalfa weevil (Coleoptera: Curculionidae) resistance. J. Entomol. Sci. 30: 120-129.

Ratcliffe, R.H., H. W. Ohm, F. L. Patterson, S. E. Cambron and G. G. Safranski. 1996. Response of resistance genes H9 to H19 in wheat to Hessian fly (Diptera: Cecidomyiidae) laboratory biotypes and field populations from the eastern United States. J. Econ. Entomol. 89:1309-
Ratcliffe, R.H., H. W. Ohm, F. L. Patterson, and S. E. Cambron. 1997. Biotype composition of Hessian fly (Diptera: Cecidomiidae) populations from Arkansas, Georgia, Illinois, North Carolina and Virginia. J. Entomol. Sci. 32:154-164.
Ratcliffe, R.H. and J. H. Hatchett. 1997. Biology and genetics of the Hessian fly and resistance in wheat. p. 47-56. In [ed. K. Bondari], New Developments in Entomology. Publisher, Research Signpost, Scientific Information Guild, Trivandrum, India.
Sadras, V., A. Fereres and R. Ratcliffe. 1999. Wheat growth, yield and quality as affected by insect herbivores. pp. 183-227. In [ed. E. Satorre and G. Slafer], Wheat. Ecology and Physiology of Yield Determination. Publisher, Food Product Press, New York, NY.
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