The white grape variety (also Geisenheim 7815-1) is a new variety 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 crossing of the hybrids was carried out in 1978 at the Geisenheim Research Institute (Rheingau) by Dr. Helmut Becker (1927-1990). The medium-late maturing vine is resistant to both mildew and botrytis, which is why it is considered a PIWI variety. It produces acidic white wines similar toPinot Blanc. No stocks were reported in 2010 (Kym Anderson).
Pictures: Ursula Brühl, Doris Schneider, Julius Kühn Institute (JKI)