Jenny Clement-Bailey, Steve Hague, and C. Wayne Smith. Texas A&M, 370 Olsen Blvd, College Station, TX 77843-2474
Extra Long Staple Upland (ELSU) germplasm lines were developed by the Cotton Improvement Lab at Texas A&M University. These lines exhibit UHM fiber lengths from 1.29 inches, the minimum for ELS classification, to 1.37 inches. An experiment was conducted to determine the general and specific combining ability of 50 of the TAM ELSU germplasm lines when hybridized with either Tamcot CAMDE or Coker 312. Resulting F1 progeny were field grown in a replicated trial in College Station, TX, in 2007 with combining ability calculated for lint fraction and fiber traits. This information can be used by breeders to determine which TAM ELSU lines would be preferable as parental material to improve fiber length and other fiber properties.
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