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Title:   Author  item
                                            Jenkins, Johnieitem
                                            McCarty, Jackitem
                                            Gutierrez, Osmanitem
                                            Hayes, Russell

                                                         - *Russ*item
                                            JONES, DON - Cotton, Inc
  Submitted to: Journal of Plant Registrations
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 12/6/2012
                                    Publication  Date: 4/1/2013
                                    Citation: Jenkins, J.N., McCarty Jr., J.C., Gutierrez, O.A., Hayes, R.W., Jones, D.C. 2013. Registration of RMBUP-C4, a random mated population with Gossypium hirsutum L. alleles, introgresssed into Upland cotton germplasm. Journal of Plant Registrations. 7:224-228.Interpretive Summary: RMBUP-C4 (Random Mated Barbadense Upland Population Cycle 4) is a unique germplasm population which has genes from Gossypium barbadense L. transferred into primarily an Upland cotton G. hirsutum L. background.  This germplasm had as one set of parents 18 chromosome substitution lines each with an individual G. barbadense chromosomes or arms substituted into Upland and the other set of parents were five diverse elite cultivars.  It was randomly mated for five cycles using a bulked pollen method of pollination.  This population should have succeeded in transferring more genes from G. barbadense than any population currently available to cotton breeders.  G. barbadense fibers are longer, stronger, and finer than Upland cultivars.  Genes for these traits are now available in this high yielding Upland germplasm background and are of considerable value to cotton breeders.
                                Technical Abstract: RMBUP-C4 (Random Mated Barbadense Upland Population Cycle 4) (Reg. No.      GP_____: PI______) is a unique random mated germplasm population of Upland cotton (Gossypium hirsutum L.) which has introgression of G. barbadense L. alleles.  This population involved five cycles of random mating beginning with 53 top crossed F1 lines.  The germplasm was developed through cooperative research by USDA, ARS, Mississippi Agricultural and Forestry Experiment Station, and Cotton Incorporated.  Cultivars ‘Sure-Grow 747’, ‘Phytogen 355’, and ‘Fibermax 966’ were each crossed with 18 CS-B chromosome substitution lines; however, the seed of Phytogen 355 x CS-B22sh was lost.  The bulked pollen method of pollination was used in the development, and there were five cycles of random mating with the intercrossing of F1 lines considered as cycle zero.  After randomly mating the 53 F1 lines, the cultivars lineage within each CS-B line were combined which produced 18 individual populations.  The 18 populations were planted as 18 individual populations and randomly mated among populations each additional cycle.  Because the CS-B lines were each euploid chromosome substitution lines with entire chromosomes or arms from G. barbadense substituted into Upland, we should have achieved considerable introgression of alleles from G. barbadense into this randomly mated population.  This population should be of value to cotton breeders and geneticists across the U. S. Cotton Belt as a unique population with G. barbadense introgression.


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