Pedigree reconstruction of wine and table grape crossbreeds created in Italy by Giovanni Dalmasso

Through microsatellite analysis, three duplicated genotypes were discovered and twenty ID parentages out of 39 were confirmed. In 13 IDs, one parent was incorrect, in 2 IDs, both parents were inconsistent with microsatellite profiles, and in 4 IDs the pedigree could not be verified since the pollen donor was not available. Apart from invalidated crosses likely due to pollen contamination, 5 accessions were mislabelled, either when both parents were invalidated or when two specimens of the same offspring were differently labelled. Verification of breeder's declared parentages revealed 43% of invalidated pedigrees within the investigated wine and table cross-breeds. The results provide additional insight into grapevine available diversity, and may aid the development of further breeding programs.