Okra-leaf and normal cotton isolines with different backgrounds

The results of a performance test of okra-leaf isolines of cotton (Gossypium hirsutum L.) are reported. The isolines were characterized by measurement of the effects of the qualitative characters on quantitative traits and by comparison with the performance of the recurrent parents. The variability of lines within each isoline was also determined. The okra-leaf isolines were significantly earlier than the normal-leaf isolines, as measured by the percentage of total seed cotton collected at first harvest (23.7 vs. 18.6%, respectively). However, okra-leaf isolines yielded significantly less total seed cotton (21.5 g/plant vs. 26.4, respectively, an 18.7% decrease).