Synonym or breeding number (also FR 25-1) for the Freisamer grape variety; see there.
The white grape variety is a new variety between Silvaner x Pinot Gris (which was confirmed by DNA analyses published in 2012). Synonyms are Freiburg 25-1 and (in Switzerland) Freiburger. The cross was made in 1926 by the vine breeder Karl Müller (1881-1955) at the State Viticulture Institute in...
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Technischer Lehrer, staatl. geprüfter Sommelier, Hotelfachschule Heidelberg