QTL identification for downy mildew resistance in cucumber using genetic linkage map based on SSR markers.

Fourteen cucumber lines were tested for genetic homozygosity and performed pairwise comparison to identify a pair with the highest DNA polymorphic level. Cucumber accessions CSL0067 and CSL0139 were selected to generate 315 F populations. The genetic linkage map based on 66 polymorphic SSR markers was constructed.