The red grape variety comes from Germany, The parenting Bicane x Schiava Grossa was first made in 2013 DNA analysis clarified. However, this is based on only 20 DNA markers (see below molecular Genetics ). It remains unclear whether it is a deliberate crossing ( new breed ) or one openly dimmed Seedling (random product) trades. Anyway, it was done by Johann Philipp Bronner (1792-1864) the selection of the vine. No stocks were reported in 2010 (Kym Anderson ).
Pictures: Ursula Bruehl, Doris Schneider, Julius Kühn Institute (JKI)