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Title:   Author  item
                                            STELLY, DAVID - TEXAS A&M UNIVERSITYitem
                                            Saha, Sukumaritem
                                            RASKA, D - TEXAS A&M UNIVERSITYitem
                                            Jenkins, Johnieitem
                                            McCarty, Jackitem
                                            Gutierrez, Osman
  Submitted to: National Cotton Council Beltwide Cotton Conference
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 1/5/2004
                                    Publication  Date: 5/1/2004
                                    Citation: Stelly, D.M., Saha, S., Raska, D.A., Jenkins, J.N., McCarty Jr, J.C., Gutierrez, O.A. 2004. Notice of release of 17 germplasm lines of upland (Gossypium hirsutum), each with a different pair of G. barbadense chromosomes or arms substituted for the respective G. hirsutum chromosomes or arms. Proceedings National Cotton Council Beltwide Cotton Conference. p. 1205-1207.Interpretive Summary:
                                Technical Abstract: The exceptional fiber length, strength and fineness of Pima and Sea Island cotton (Gossypium barbadense. L.) give it a 30% to 50% price advantage over the more widely grown Upland cotton (G. hirsutum) because of its superior spinning and manufacturing performance. Attempts to incorporate genes from G. barbadense into Upland have generally not achieved stable introgression of the fiber properties due to incompatibility between the genomes.  We developed a set of backcrossed chromosome substitution lines for different chromosomes of G. barbadense (3-79) into a G. hirsutum (TM-1) background, many of which were not available earlier. Selfed seeds from cytologically-identified euploid (normal 26 II chromosomes) backcrossed chromosome substitution lines (CS-B) for 13 different chromosomes, as well as the TM-1 and 3-79 parents, were planted in three replicated plots at three locations (Mississippi, Texas, and Arizona) in summer, 2002 for evaluation of agronomic and fiber properties based on bulk sample analysis of individual lines.  Many of these CS-B lines showed improved fiber and agronomic characteristics.  Texas Agricultural Experiment Station; The Agricultural Research Service, United States Department of Agriculture; and Mississippi Agricultural and Forestry Experiment Station announce the release of these 14 unique germplasm lines of backcrossed chromosome substitution lines of Gossypium barbadense in G. hirsutum.  These germplasm lines should be useful to commercial cotton breeders in the development of varieties with improved fiber and agronomic traits.


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