Synonym or breeding number (also FR 377-83) for the Cabernet Carbon grape variety; see there.
The red grape variety (also FR 377-83 R) is a new variety between Cabernet Sauvignon x(Merzling x(Zarya Severa x St. Laurent)). In some sources this is referred to as Cabernet Sauvignon x Bronner, because the Bronner variety was...
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Fachjournalistin, Lektorin und Verkosterin, Wien