Abstract
Two techniques of implanting eggs of the boll weevil, Anthonomus grandis Boheman, in cotton buds were used to compare antibiosis in 12 lines of Gossypium (7 G. hirsutum L., 1 G. arboreum L., 1 G. arboreum × G. hirsutum , 1 G. davidsonii Kellogg, 1 G. barbadense L., and 1 G. thurberi Todaro). Data obtained in greenhouse and field-cage studies included: boll weevil weights at emergence, days to emergence, number of buds, number of buds blooming out, size of buds (length and diameter), number of boll weevils from buds, and number of boll weevils from buds blooming out. Days required to develop and weights of adult weevils differed significantly between cotton lines within each test. Cotton lines showing antibiosis worthy of further study were: G. arboreum, G. thurberi, G. davidsonii , and 1 G. hirsutum (experimental line SA 13).
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