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This article in CS

  1. Vol. 15 No. 3, p. 438-440
    Received: Sept 20, 1974

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Effect of Flat-square in Cotton on Selected Agronomic Characters1

  1. H. Khalifa,
  2. L. S. Stith and
  3. W. D. Fisher2



Data were collected from flat and nonflat-square cotton (Gossypium hirsutum L.) plants in replicated experiments to evaluate their relative performances for yield components and fiber characteristics. Results indicate that the flat-square trait has an adverse effect on seed cotton yield, boll weight, lint percentage, lint index, fiber fineness, and strength. Flat-square plants produced more flowers than nonflat-square plants at Tucson, Marana, and Phoenix, Ariz.; but flat-square plants had a higher rate of shedding of deformed and incomplete flowers as well as reduced boll weight, lint percentage, and lint index. Thus, nonflat-square plants produced more seed cotton at harvest time, but they had similar crop maturity. Pedigree selection is suggested as one breeding procedure to effectively eliminate or minimize this abnormality.

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