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Title: MAJOR-POLYGENE EFFECT ANALYSIS OF SUPER QUALITY FIBER PROPERTIES IN UPLAND COTTON (G. HIRSUTUM. L.)

Author
item YUAN, Y. - NANJING AGRICULTURAL UNIV
item ZHANG, T - NANJING AGRICULTURAL UNIV
item GUO, W. - NANJING AGRICULTURAL UNIV
item Yu, John
item Kohel, Russell

Submitted to: Acta Genetica Scinica
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 4/28/2002
Publication Date: 4/8/2002
Citation: Yuan, Y.L., Zhang, T.Z., Guo, W.Z., Yu, J., Kohel, R.J. 2002. Major-polygene effect analysis of super quality fiber properties in upland cotton (g. hirsutum. l.). Acta Genetica Scinica. 29(9):827-834.

Interpretive Summary: Cotton fiber quality is important in the textile industry to meet high-speed automation in the new century. Improvement of fiber quality requires better understanding of genetics of fiber quality properties. We conducted large experiments that included eight crosses from five cotton parents with different fiber strength measurements. Fiber strength of the segregating progeny was measured individually and the data were subjected to analysis of a genetics model that mixed major genes and minor genes. The results showed that in all fiber quality properties there was at least one major gene plus some minor genes. The major gene contributed the improvement 19.6% fiber strength, 13.9% fiber length, and 32.0% fiber fineness, for example, in one cross of two Upland cottons with high (7235) and low (TM-1) fiber strength.

Technical Abstract: Cotton fiber quality is important in the textile industry to meet high-speed automation in the new century. Improvement of fiber quality requires better understanding of genetics of fiber quality properties. We conducted large experiments that included eight crosses from five cotton parents with different fiber strength measurements. Fiber strength of the segregating progeny was measured individually and the data were subjected to analysis of a genetics model that mixed major genes and minor genes. The results showed that in all fiber quality properties there was at least one major gene plus some minor genes. The major gene contributed the improvement 19.6% fiber strength, 13.9% fiber length, and 32.0% fiber fineness, for example, in one cross of two Upland cottons with high (7235) and low (TM-1) fiber strength.