Figure 2

Physical map of the twelve potato chromosomes (pseudomolecules v4.03) [28] for wart resistance loci. The positions of markers linked with wart resistance loci in previous studies are shown on the left in bold letters. Capital letters in parenthesis are codes for the corresponding reference: A [5], B [21] and C [6]. For general orientation, additional sequence based markers of potato and tomato are shown on the left (not bold), which anchor potato genetic maps (http://www.gabipd.org/database/maps.shtml) to the physical map. The positions of SSR markers STM1002, StI004 and the SolCAP SNPs linked to wart resistance loci in the subset of 54 BNA2 genotypes are shown on the right, with pathotype range in brackets. Markers which co-segregated in coupling phase or were tightly linked and had the same parental allele configuration (see Additional file 2) are shown in the same color. Markers that were tested in the full BNA2 family (n = 133) are in bold letters. The approximate positions of RSe loci known to date are indicated on the right with the corresponding reference code in parenthesis: A [5], B [21], C [6], D (this paper) and E [20].