The white grape variety is a new variety between Grüner Silvaner x Siegerrebe, which was confirmed by DNA analyses carried out in 2012. However, this is based on only 15 DNA markers (see molecular genetics). Synonyms or breeding no. are (Sisi and Würzburg B 48-13-56. The crossing was carried out by Dr. Hans Breider (1908-2000) at the Bavarian State Institute for Viticulture, Fruit and Horticulture in Würzburg. In 2016 no stocks were reported (Kym Anderson).
Pictures: Ursula Brühl, Doris Schneider, Julius Kühn Institute (JKI)
I have great respect for the scope and quality of the wein.plus encyclopaedia. It is a unique place to go for crisp, sound information on terms from the world of wine.
Dr. Edgar Müller
Dozent, Önologe und Weinbauberater, Bad Kreuznach