Synonym (breeding number) for the grape variety Ortega; see there.
The white grape variety (Breeding No. Würzburg B 48-21-4) is a new cross between Müller-Thurgau x Siegerrebe, which was confirmed by DNA analyses published in 2012. The cross was made in 1948 by the breeder Dr. Hans Breider (1908-2000) at the Bavarian State Institute for Viticulture and Horticulture in...
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Domäne Wachau (Wachau)