Fig. 4
Genetic and physical py1 maps and candidate gene analysis. a: Chromosome A09 linkage map was constructed with 1520 pylm individuals from the No. 1 F3:4 family. The py1 was preliminarily mapped between SSRzk17 and SSRzk28; b: Fine mapping of py1. The py1 was restricted to the region between Indelzk125 and SSRzk36. Number of recombinants between the markers and py1 is shown below the genetic map. The mapping distance above the linkage map is in centimorgan (cM) units; c: Candidate py1 region and the annotated genes in the Brassica database. The py1 locus was narrowed to a 258.3-kb region comprising 34 predicted genes. The numbers 1–34 refer to the candidate genes. The arrows indicate the direction of gene expression. Detailed information on the 34 genes is presented in Additional file 3: Table S6