The white grape variety (also Würzburg B 51-4-5) is a new breeding between Rieslaner x Müller-Thurgau, which was confirmed by DNA analyses published in 2012. Incidentally, the new varieties Albalonga and Fontanara were created with the same parents. The cross was made in 1951 by Dr. Hans Breider (1908-2000) at the Bavarian State Institute for Viticulture and Horticulture in Würzburg. However, the variety did not catch on; in 2010 no more stocks were recorded in Germany.
Pictures: Ursula Brühl, Doris Schneider, Julius Kühn Institute (JKI)