Investigations of Character Association in Some Upland Cotton (Gossypium hirsutum L.) Genotypes. II. Yield Components and some Fibre Properties

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Abdelrahman, S. H.
Abdalla, A. H.
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Faculty of Agriculture, University of Khartoum, Shambat, Sudan
Ten genotypes of upland cotton were evaluated over two seasons (1990/91 and 1991/92) in a randomized complete block design with two replications. Data on yield, yield components and fibre properties were collected. Genotypic and phenotypic correlations between yield components and fibre characteristics were then determined. Seed cotton yield showed significant positive correlations with fibre fineness and fibre maturity ratio, while it had non-significant negative correlations with fibre length and strength. Positive correlations were also obtained for each of fibre fineness and maturity ratio with lint yield, lint index and ginning out-turn. On the other hand, fibre length and fibre strength exhibited negative correlations with lint yield and lint index. Fibre length and strength were positively associated with each other and negatively correlated with fibre fineness and maturity ratio. Positive correlations were obtained for fibre fineness with fibre maturity ratio. The fibre properties which had close associations with seed cotton yield and lint yield indicate that simultaneous improvement of yield and these quality characteristics is possible. However, special consideration should be given to those traits which are negatively associated with each other.
Page(s): 3 (1), 13- 23, 15 Ref
Fibre fineness, Fibre length, cotton seed and fibre properties