The white grape variety originates from Italy. The name is probably derived from the hard-skinned berries (duro = hard). Synonyms are Cagnina, Caina, Duracino, Durella Bianca, Durella Gentile, Durello, Durelo and Rabiosa. It must not be confused with the Nosiola variety, despite certain morphological similarities. The parentage is unknown. According to DNADNA...
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