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Identification and Mapping of Fiber Length and Strength QTLs in an Interspecific Cotton Population

T. D. Brooks, A. E. Pepper, O. U. K. Reddy, P. M. Thaxton and K. M. El-Zik


 
ABSTRACT

There is a need to improve fiber characteristics of Upland (Gossypium hirsutum) cotton cultivars to meet market and textile demands. The objective of this study was to identify and map genes associated with fiber length and strength. In order to develop a mapping population that was sufficiently polymorphic for fiber characteristics, an interspecific cross between Pima S-7 (G. barbadense) and Tamcot SP37 (G. hirsutum) was made, and single seed descent segregating F2 and F3 plants obtained. Each field grown F2 and F3 plant was harvested separately and measurements for fiber length and strength were made using individual instruments. A large amount of high quality DNA was extracted from leaf tissue samples of individual plants for molecular analysis.



Reprinted from Proceedings of the 2000 Beltwide Cotton Conferences pg. 484
©National Cotton Council, Memphis TN

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Document last modified Saturday, Jun 17 2000