The white grape variety is a new breed between Schiava Grossa (Trollinger) x Riesling, which was confirmed by DNA analyses published in 2012. Synonyms are Geisenheim 3-48 and Wittberger. From the same parents, the new breeds Kerner and Rotberger have also emerged. The crossbreeding took place in 1928 by Heinrich Birk Heinrich (1898-1973) at the Geisenheim Research Institute in the Rheingau. The vine is susceptible to Botrytis. It produces acidic white wines. It was withdrawn after the trial stage and did not enter commercial cultivation.
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Dr. Christa Hanten
Fachjournalistin, Lektorin und Verkosterin, Wien