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9223 Identification of Introgressed Regions in Sealand Cotton Cultivars using SSR Markers

Tuesday, January 6, 2009
Salon H (Marriott Rivercenter Hotel)
Wednesday, January 7, 2009
Salon H (Marriott Rivercenter Hotel)
Thursday, January 8, 2009
Salon H (Marriott Rivercenter Hotel)
Pawan Kumar1, Rippy Singh1, a. H. Paterson2 and Peng Chee1, (1)University of Georgia, Tifton, GA, (2)University of Georgia, Athens, GA
Historical records indicated that Sealand cottons (Gossypium hirsutum) were developed through interspecific breeding with Sea Island cotton (Gossypium barbadense). Therefore, the superior fiber quality of these Sealand cottons could be attributed to gene introgressions from the Sea Island parent. The objective of this study is to determine the chromosome locations of G. barbadense introgressions in two Sealand cultivars using 800 PCR-based SSR markers. Our results indicated that chromosomes 5, 9, 11, 23, 24 and linkage groups A02, A03, D03, D08 are prominent candidates that hold a majority of the introgressed chromatin. Genetic effect of these regions on fiber quality traits is currently under investigation using two intraspecific mapping populations
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