Genetic relationships among the 21 pedigreed strawberry cultivars and breeding lines, and a graphical representation of FlexQTL IBD (identity-by-descent) probabilities for LG1C. Dark grey, medium grey and light grey boxes represent cultivars for which none, one or both parents are included in the current survey. Haplotypes are represented by the coloured boxes, and each colour represents a different founder haplotype. Red lines indicate maternal parents and blue lines indicate paternal parents. Horizontal lines within a coloured box represent the positions of five different marker loci (from top to bottom: PSContig944, CX661101, UFFxa16H07, UAFv7500 and ARSFL010). The width of a colour at a particular height reflects the probability that the corresponding founder allele is present at that locus on the map (see Voorrips 2007).