Integrated genetic and physical map of LG B from S. bicolorBTx623 x IS3620C recombinant inbred population. LG B is shown in three parts from the upper end to the bottom end. All SSR and RFLP markers shown were previously mapped to LG B (Peng et al. 1999; Kong et al. 2000; G. Hart, pers. comm.). AFLP markers (labeled Xtxa along LG B) were mapped in the present study. BACs were linked to SSRs (Xtxp markers), STSs (Xtxs markers) or AFLPs (bold-type Xtxa markers) by PCR-based screening of the BAC DNA pools. The individual BAC clones positive for each genetic marker are indicated by symbols next to the clone name. BAC clones that were placed into the same contig by DNA fingerprint analysis are grouped in boxes. Genetic markers linked to two different contigs or one contig and a BAC singleton clone indicate those BAC clones positive for a common marker but not placed into the same contig by DNA fingerprint analysis.
