Genotypic Reactions to Boll Weevil Attack in Upland Cotton1

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Mutant lines of Upland cotton carrying any two of four mutant genes, H1,H2, gl and R1 which promised to confer a certain degree of resistance to attack by boll weevil (Anthonomous gramlis Boh.) were tested together with lines having the same genetic background but differing by opposite alleles to the genes under test. All mutant lines showed varying degrees of resistance to boll weevil attack; the lines combining H1 and H2, to the highest degree, those combining gl and H2, and gl and H1, ranking second and third. Lines carrying the genes R1 in combination with gl or H2 were tested in a separate experiment. Both strains showed a relatively high degree of resistance. The main effects of the mutant genes, H1, H2 and gl, could only be estimated on the assumption that their interactions were unimportant. On this basis the data obtained in the experiments indicate that H2,, contributed more to resistance than H1 while gl had no significant effect.

Document Type: Research Article

Publication date: August 1, 1958

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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