The red grape variety (breeding no. WE S 351) is a new breeding between Blauer Limberger (Blaufränkisch) x Schwarzelbling (Elbling), which was confirmed by DNA analyses carried out in 2012. However, this is based on only 15 DNA markers (see under molecular genetics). The cross was made in 1955 by August Herold (1902-1973) at the Staatliche Versuchsanstalt Weinsberg in Württemberg. The name is derived from the breeder's birthplace Neckarsulm. Plant variety protection was granted in 1985. A direct descendant is the variety Wildmuskat. The deep red, racy wine resembles the Limberger (Blaufränkisch). The late-ripening and very colourful variety is also excellent as a colouring Teinturier (dyer grape). No stocks were reported in 2018 (D-STATIS).
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