The red grape variety (breeding number Klosterneuburg 181-2-71) is a new breeding between St. Laurent x Blaufränkisch (which was confirmed by DNA analyses carried out in 1997). Synonyms are Blaue Zweigeltrebe, Blauer Zweigelt, Cvaigelt, Cveigelt, Klosterneuburg 71, Rotburger, Semenac Cerni 71, Zweigelt 71, Zweigeltrebe and Zwiegelt. The cross was made in 1922 by Dr. Fritz Zweigelt (1888-1964) at the Klosterneuburger Weinbauinstitut (Lower Austria), who gave it the name Rotburger. It was not until 1975, in the course of the Quality Wine Variety Ordinance, that it was given the name Zweigelt, which is customary today, after its creator. After many years of practical testing of the grape variety in the new high-cultivation form developed by him, the winegrowing pioneer Lenz Moser III. (1905-1978) was the main advocate. The variety was a crossing partner in the new varieties Anthoprim, Ariana, Cabernet Moravia, Roesler and Zweigelt Stella.
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Technischer Lehrer, staatl. geprüfter Sommelier, Hotelfachschule Heidelberg