The white grape comes from the border area Italy / Switzerland, Synonyms are Blanc de Maurienne (Savoy), Petit Prié Tardif, Regis, Resi, Rèze Blanc, Rèze Blanche, Rèze Jaune, Rèze Vert, Rèze Verte and Rèzi. According to several DNA analysis came up Parent-offspring relationship to the varieties Arvine. Arvine Grande. Diolle (all three Valais), Cascarolo Bianco (Piedmont), Groppello di Revò and Nosiola (both Trentino) out. According to 2009 DNA analyzes, the in Savoy Cultivated Blanc de Maurienne identical. There is probably also a relationship to the Piedmont variety Freisa, This also shows the earlier widespread use and the old age of the vine. In 2008 there was a color mutation found with red berries.
It is one of the oldest varieties in the Alps; it will also be in Swiss Wallis to the grape variety group Old plants counted. Already in 1313 it was grown together with the varieties Neyrun (?) And Humagne Blanche documented in the "Directory of Anniviers" under the name "Regy". According to a non-verifiable hypothesis, it is said to be a descendant of Pliny the Elder (23-79) mentioned Uva raetica, from which the famous ancient wine Raeticum was pressed. The medium to late ripening vine is susceptible to Botrytis, It produces an acidic white wine with aromas of gooseberries and green apple. In the Valais, the variety was in the 19th century before phylloxera still very common. It is here in Vin des Glaciers (Glacier wine) used. In 2010, however, no stocks were shown (Kym Anderson ).
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012
Images: Ursula Brühl, Doris Schneider, Julius Kühn Institute (JKI)