Synonym or breeding number (also FR 993-60) for the grape variety Merzling; see there.
The white grape variety (also Freiburg 993-60) is a new breeding between Seyve-Villard 5276 (Seyval Blanc) x (Riesling x Pinot Gris). It contains genes from Vitis lincecumii, Vitis rupestris and Vitis vinifera. The hybrid was crossed in 1960 by Dr. Johannes Zimmermann...
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