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Published in Crop Sci 8:647-649 (1968)
© 1968 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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A Boll Weevil Oviposition Suppression Factor in Cotton1

William T. Buford, Johnie N. Jenkins and Fowden G. Maxwell2

The rate of boll weevil, Anthonomus grandis Boheman, oviposition was tested on 252 cotton lines, Gossypium hirsutum L. and G. barbadense L., in a nonreplicated mass screening procedure. Boll weevil oviposition was reduced in 26 lines. Replicated tests were performed on six of these by using the A & M laboratory strain and a Mississippi field strain of weevils. The two strains ranked the six cotton lines in relatively the same order. We obtained F1 hybrids of each of the 26 lines by crossing them with ‘Deltapine Smooth Leaf’ (DPSL) and tested the hybrids for oviposition with the A & M strain in replicated tests. Significant differences were found. Oviposition values ranged from 49 to 178% of the commercial DPSL parental line. ‘S. I. Seaberry’ produced the lowest oviposition rate. Inheritance studies with S. I. Seaberry x DPSL were conducted in the F1, F2, and backcross progeny. Difficulty was experienced in testing individual F2 backcross plants since the test required many squares. We did, however, determine that the ability of S. I. Seaberry to suppress boll weevil oviposition was under genetic control.

Key Words: resistance • Gossypium hirsutum L. • Anthonomus grandis

1 In cooperation with the Mississippi Agricultural Experiment Station. Part of a thesis submitted by the senior author in partial fulfillment of the requirements for a M.S. degree.

2 Geneticist (Research Assistant) and Research Geneticist, Crops Research Division, and Research Entomologist, Entomology Research Division, Agricultural Research Service, USDA, Boll Weevil Research Laboratory, State College, Miss. 39762.

Received for publication December 26, 1967.




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