In Switzerland common name (French vieux plants) for the mostly very old autochthonous Grape varieties, especially in the canton Wallis (French Valais). Some come from the Italian region above the border aosta Valley or are also partly grown there. The two areas form a geographical island across borders with a large common grape variety pool. Many of these grape varieties form individual groups with kinship relationships that have developed over centuries. The sometimes very close genetic connections are due to the geographic isolation.
By the Swiss biologist dr. José Vouillamoz (University of Neuchâtel) were one hundred varieties from the Swiss Valais, as well as from the Italian regions aosta Valley. Lombardy. Piedmont. Trentino and Friuli examined. The DNA-characteristics were with more than a thousand varieties in the database of University of California compared in Davis and clarified many lineages and kinships.