According to the physical position of flanking markers, the smallest supported interval for the Rda1 locus is located between 19.3 and 19.6 Mbp of chromosome 15 (with higher LOD of 51.4 and 58.6, Table 3), and the smallest supported interval for the Rda2 locus is located between 1.5 and 2.4 Mbp of chromosome 7 for the result with higher LOD (Table 3, LOD 58.4). There are 39 annotated genes within the 300 kb supported interval for the Rda1 locus, which codes for five NB-LRR proteins (Grimplet et al. 2012) that are potentially associated with plant–pathogen interactions.