Registration of 17 Upland (Gossypium hirsutum) Cotton Germplasm Lines Disomic for Different G. barbadense Chromosome or Arm Substitutions.

This article presents information on the registration of 17 upland cotton germplasm lines disomic for different Gossypium barbadense chromosome or arm substitutions. Seventeen germplasm lines were each developed by hypoaneuploid-based backcross substitution of a different Gossypium barbadense chromosome or chromosome segment into a Gossypium hirsutum genetic background by the Texas Agricultural Experiment Station, the U.S. Department of Agriculture-ARS, and the Mississippi Agricultural and Forestry Experiment Station and released in 2004. The substitution lines are genetically similar to TM-1, an Upland cotton genetic standard, and to each other, except that each line differs by the replacement of a specific homologous pair of chromosomes or chromosome segments from the donor line 3-79, a Gossypium barbadense genetic standard. These germplasm lines were released because attempts to incorporate genes from Gossypium barbadense for exceptional fiber length, strength, and fineness into Upland cotton have generally not achieved stable introgression. The development of CS-B lines was based on principles of cotton cytogenetic behavior, transmission, and inheritance.