4. Conclusion
The results of the present study demonstrate that SSR markers
developed for the mapping of Run1 and Ren1 disease resistance loci in grape can be applied for MAS. With these markers we were
able to prove the presence of the pyramided PM resistance genes in
the BC5 hybrid family. Plants carrying pyramided resistance genes
(Run1, Ren1) for the same phenotype can be identified only with
DNA level analysis. This is the first time when SSR markers linked
to Ren1 have been used for MAS.