The white grape variety (also Freiburg 993-60) is a new variety between Seyve-Villard 5276(Seyval Blanc) x(Riesling x Pinot Gris). It contains genes from Vitis lincecumii, Vitis rupestris and Vitis vinifera. The hybrid was crossed in 1960 by Dr. Johannes Zimmermann (1907-1998) at the State Viticulture Institute in Freiburg (Baden-Württemberg). The name is derived from the district Merzhausen in Freiburg, where the institute owns several experimental vineyards. It was a cross-breeding partner of the new varieties Baron, Bronner, Cabernet Cantor, Cabernet Carbon, Cabernet Carol, Cabernet Cortis, Calastra, Helios, Monarch, Prior, Rinot, Solaris. The late maturing, high-yielding and frost-hardy vine is resistant to both types of mildew and is therefore considered a PIWI variety. It produces white wines with a fruity aroma similar to Müller-Thurgau. The variety is cultivated in Germany (4 ha); a small population is also said to exist in Belgium (Statistics Kym Anderson).
Pictures: Ursula Brühl, Doris Schneider, Julius Kühn Institute (JKI)