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Crop Science Abstract -

Some Problems in Breeding Smooth-Leaved Cottons1


This article in CS

  1. Vol. 11 No. 3, p. 448-450
    Received: Dec 9, 1970

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  1. Joshua A. Lee2



Four alleles distributed at three independent loci impart varying degrees of smoothness to the leaves of upland cotton, Gossypium hirsutum L. Each of these alleles, when homozygous, and acting free of other smoothness alleles, confers a characteristic degree of smoothness. Certain interalldic combinations increase smoothness, whereas others do not. Some problems in breeding for smoothness are: (a) determining the degree of smoothness needed, (b) selecting the alleles necessary to impart that level of smoothness, and (c) recognizing the effects of the smoothness alleles in the background chosen, particularly in the heterozygous state. There is little reason to believe that individual smoothness alleles impart any undesirable traits other than possible susceptibility to thrips. However, certain allelic combinations might lower lint percent, and certain of the alleles could be linked to genes conditioning agronomically undesirable traits.

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