Dureza

Mondeuse Blanche is native to the Savoie region, though it has been found in the Ain, Haute-Savoie and Isère departments. The DNA evidence showing that Dureza, an Ardèche variety, and Mondeuse Blanche were the parent vines of Syrah helped to confirm that Syrah was an indigenous French grape variety that originated somewhere in the Rhône-Alpes region; grape geneticist Dr. Carole Meredith speculates that the northern Isère region was the likely birthplace.^[2]

DNA mapping has also revealed some relationship to the

In the 20th century, ampelographers Louis Levadoux and (decades later) Linda Bisson categorized Dureza as a member of the Pelorsien eco-geogroup along with Bia blanc, Béclan, Durif, Exbrayat, Jacquère, Joubertin, Mondeuse blanche, Peloursin, Servanin and Verdesse.^[2]

Viticulture

Dureza is known as a vigorous vine, capable of producing high

Dureza is also known under the synonyms Duré, Duret, Durezza (when grown in the Annonay commune of the Ardèche) and Petite Duret (in the Drôme and Isère departments).^[5] Historically it has also been known as Serène and Serine which are more widely recognized as synonyms for its offspring Syrah used in the Côte-Rôtie AOC.^[2]

Dureza has sometimes been confused with Durif (which is also known as Petit Sirah), Peloursin (which is known under the synonyms Duresa, Dureza and Durezi) and Syrah.^[2]

References