The red grape variety comes from France, Synonyms are Rouge de Diolly, Salagnin and Sasteigne. It was once in the department Drôme cultivated in the Rhône Valley and was considered extinct. In the 1920s, the vine was produced by the Swiss vines breeder Dr. Henri Wuilloud at the municipality Diolly in the canton Wallis discovered and named after the locality Rouge de Diolly. According to done in 2013 DNA analysis it is a presumably natural cross between the varieties Mondeuse Blanche (white) x Tressot Noir (red). However, this is based on only 20 DNA markers (see under molecular Genetics ). Robin Noir was crossing partner in the new breed Diolinoir, In 2010, no inventory was reported (Kym Anderson ).
Pictures: Ursula Bruehl, Doris Schneider, Julius Kühn Institute (JKI)