Crop Science Journal of Natural Resources and Life Sciences Education
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Published in Crop Sci 8:762-767 (1968)
© 1968 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Developing Alfalfa Resistant to Alfalfa Weevil Oviposition1

T. H. Busbice2, W. V. Campbell3, J. O. Rawlings3, D. K. Barnes4, R. H. Ratcliffe4 and C. H. Hanson2

Alfalfa, Medicago sativa L., populations differed significantly in suceptibility to oviposition by the alfalfa weevil Hypera postica (Gyllenhal) in laboratory preference tests. Factors responsible for oviposition preference were strongly influenced by changes in environment. Low oviposition was associated with small stem diameter. Selection for resistance to oviposition appeared to be effective. Methods of testing alfalfa for resistance to oviposition were described.

Key Words: interaction correlations • Hypera postica • Medicago sativa L.

1 Paper number 2663 of the Journal Series of the North Caroline State University Agricultural Experiment Station, Raleigh, in cooperation with the Crops and Entomology Research Divisions, Agricultural Research Service, U. S. Department of Agriculture.

2 Research Agronomists, Crops Research Division, ARS, USDA, Raleigh, N. C. 27607, and Beltsville, Md. respectively.

3 Associate Professors, Entomology and Statistics Departments, respectively, North Carolina State University.

4 Research Geneticist and Research Entomologist, Crops and Entomology Research Divisions, ARS, USDA respectively, Beltsville, Md.

Received for publication June 17, 1968.




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Copyright © 1968 by the Crop Science Society of America.