Synonymy in Grape (Vitis vinifera L.) Cultivars of Northern Portugal and Northwestern Spain

Between 2002 to 2009, samples of grape plants were obtained from northwest Spain and northern Portugal. More than 650 accessions were sampled, studied and identified, using the six microsatellite loci included in the last edition of the International Organisation of Vine and Wine (OIV) descriptors list, plus ampelographic characters evaluated in old leaves, bunches and berries. A total of 26 grapevine cultivars, 12 white and 14 black were identified. Several synonyms and homonyms were detected. Some of the synonyms mentioned in the literature were discussed. The primary Spanish and Portuguese names are given to avoid misidentification and errors in the determination of specific genotypes of grape cultivars.