A linkage map for C. japonica derived from the YI pedigree (LG1, LG2, LG3 and LG4). Marker names are indicated to the right of the linkage groups. Centimorgan distances (Kosambi) are indicated to the left of each linkage group. Definitions for the labels ssSNP, maeSNP and hrmSNP are provided in the Materials and Methods section. The nature of the other markers is indicated by the last letter of the locus names: C, CAPS; R, RFLP; S, SSR; ES, EST-SSR; A, ALP; s, SNP.