ABSTRACT
Twelve near-isolines involving four leaf shapes, two bract types, two leaf-pubescence levels, and certain trait combinations were grown during 1986 at three locations (Alexandria, St. Joseph, and Bossier City), and harvested with a spindle-picker. Seedcotton samples were ginned on a cut-down version of a commercial gin under a controlled environment, constant feeding rates, and with zero, one, and two lint cleaners. Semi-smooth isolines (sm3) were associated with reduced number of motes at the wagon apron (19% reduction compared with the pubescent counterpart) and with improved seedcotton cleanability. Super-okra leaf shape also reduced the number of motes, besides decreasing the small leaf percentage in the feeder apron. Both traits induced significantly less total trash than the checks after one stage of lint cleaning. Frego bract had no detectable effect on seedcotton or lint trash content. None of the traits affected the number of neps after one or two stages of lint cleanings.
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