Markers with conflicting positions across different studies identified and removed by MergeMap [14] during the construction of a consensus map for apple.

Conflicts in marker position in these markers could be attributed to technical errors and the segmental duplication in apple genome. The name of marker, map, linkage group according to marker sequence similarity based on apple genome sequence, number of maps that carry this marker, and multi-locus status is given in the table. Similarity is reported if e-values of the marker sequence are more than 0.01.
Note:
*Sequence similarity of SNP and SSR forward and reverse primers against the apple draft genome sequence. Number in parenthesis represents the linkage group(s). Multiple regions on the same linkage group showing similarity (e-value >0.01) are shown by the number outside the parenthesis. The abbreviation ‘un’ stands for unanchored sequence.
**Number within parenthesis is linkage group while outside is how many maps have this marker. The abbreviation ‘un’ stands for un-anchored sequence.
***Represent multiple loci amplified by one marker; number in parenthesis is the linkage group, while number outside of the parenthesis is the number of maps wherein this marker is present.