The white grape variety (also Geisenheim 7815-1) is a new breed between Arnsburger x Seyve-Villard 1-72 (Rayon d’Or x Bertille Seyve 450). It contains genes from Vitis aestivalis, Vitis labrusca, Vitis riparia, Vitis rupestris and Vitis vinifera. The crossbreeding of the hybrid took place in 1978 at the research institute Geisenheim (Rheingau) by Dr. Helmut Becker (1927-1990). The medium-late ripening vine is resistant to both powdery mildew and Botrytis, which is why it is considered a PIWI variety. It produces acidic, white wines similar to Pinot Blanc. In 2016, stocks were reported in Germany (8 ha in Nahe and Rheinhessen) and in Switzerland (0.5 ha in the canton of Jura) (Kym Anderson).
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Technischer Lehrer, staatl. geprüfter Sommelier, Hotelfachschule Heidelberg