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Published in Crop Sci 17:5-7 (1977)
© 1977 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Boll Weevil Resistance, Agronomic Characteristics, and Fiber Quality in Progenies of a Cotton Cultivar Crossed with 20 Primitive Stocks1

Jack C. McCarty, Jr., Johnie N. Jenkins and W. L. Parrott2

Primitive race stocks of cotton (Gossypium hirsutum L.), were crossed and backcrossed twice to the recurrent cultivar ‘Deltapine 16.’ These progenies were evaluated for boll weevil (Anthonomus grandis Boheman), oviposition suppression in 1973, 1974 or both, and for agronomic characteristics and fiber quality in 1973. Lines were grown in replicated field tests, and oviposition was measured weekly during the fruiting period under boll weevil infestations. T-25B-58 (BC2F3), T-80 (BC2F2), and T-209 (BC2F2) had significantly less oviposition than the control, Deltapine 16 in 1973. Resistance is in diverse genetic stocks of cotton, which might be of economic importance. The agronomic characteristics and fiber properties of the progenies have rapidly approached those of commercial cultivars. Since no character associated with the primitive race stock adversely affected agronomic quality, these lines might be useful in the development of boll weevil-resistance cottons if satisfactory yields could be obtained.

Key Words: Gossypium hirsutum L. • Anthonomus grandis Boh., • Host-plant resistance

1 In cooperation with the Mississippi Agric. Forestry Exp. Stn. This work was taken from a dissertation submitted by the senior author to Mississippi State Univ. in partial fulfillment of the requirements for the Ph.D. degree.

2 Former research assistant, now research agronomist, ARS USDA; geneticist and adjunct professor of Agronomy; Mississippi State Univ.; and research entomologist and adjunct associate professor of entomology, Boll Weevil Research Laboratbry, ARS USDA, Mississippi State, MS 39762.

Received for publication June 26, 1976.




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Copyright © 1977 by the Crop Science Society of America.