Swiss wine
In the early 21st century, DNA analysis confirmed what ampelographers such as Pierre Galet had long suspected--that the German/Swiss wine grape Siedentraube and the French wine grape Lignan blanc were in fact Luglienga. DNA also showed that Luglienga shares a parent-offspring relationship with the Valle d'Aosta wine grape Prié blanc with the older Luglienga likely being the parent variety.