This list of grape varieties includes cultivated grapes, whether used for wine, or eating as a table grape, fresh or dried (raisin, currant, sultana).
The term grape variety actually refers to cultivars rather than botanical varieties according to the International Code of Nomenclature for Cultivated Plants, because they are propagated by cuttings and may have unstable reproductive properties. However, the term variety has become so entrenched in viticulture that any change to usage of the term cultivar is unlikely.
While some of the grapes in this list are hybrids, they are hybridized within between different species within the same genus also known as interspecific hybrids. For those grapes hybridized across species, see the section on multispecies hybrid grapes below.
According to the Method of Punctuation of the Plots of Land of Vineyards of the Region of Douro (decree nº 413/2001), there were 30 recommended and 82 permitted grape varieties in Port wine production. The quality and characteristics of each grape varies with the classification of grape varieties making a distinction between "Very Good", "Good", "Average", "Mediocre" and "Bad" quality grapes. But this classification is actually in revaluation based on the technical and scientific data of the CEVD (Center of Wine Studies of Douro). The six most widely used grapes for red Port wine are Touriga Franca, Tinta Roriz, Tinta Barroca, Touriga Nacional, Tinto Cão and Tinta Amarela.
Recommended Grape Varieties
Permitted Grape Varieties