Prior (originally known as Fr. 455-83 r, previously Fr. 484-87 r)
Mother: Joannès-Seyve 23-416 x Pinot Noir
A red Piwi/disease-resistant variety.
Year of breeding: 1987
Year of entry into the German Federal Office's Varieties Register:
From trials in Switzerland (1999 to 2005): The inter-specific grape cultivars Cabernet Cortis, Cabernet Carol, Cabernet Carbon, Prior and Monarch, bred by the Research Institute for Viticulture in Freiburg im Breisgau (Germany), have been tested since 1999 on the experimental vineyard of Agroscope RAC Changins at Pully (Lake Geneva region, Switzerland). The five cultivars have shown a high resistance against downy mildew. On the other hand, their sensitivity to powdery mildew is as high or higher than that of the reference Vitis vinifera Pinot noir, particularly for the cultivar Cabernet Cortis. Depending on the disease pressure, the use of fungicides can be necessary to produce healthy grapes. Cabernet Carol is highly sensitive to powdery mildew, botrytis bunch rot and bunch stem necrosis, and therefore could not be used to make wine. Cabernet Cortis, ripening relatively early, and Cabernet Carbon, ripening late, produce colourful and tannic wines with vegetal characters. Prior and Monarch, ripening slightly later than Pinot noir, also produce polyphenol-rich wines with an interesting fruity character. Overall, Prior shows the best overall qualities.
Wine Character - colour: intense red
Time of bud-burst: a little later than average, about 7 days later than Pinot Noir
Strength of growth: medium, upright, similar to Pinot Noir
Flowering time: average, slightly later than Pinot Noir
Leaf: - size:
- shape: 3 to 5 lobed
Grape bunch: - size: medium-large, nearly 3-cornered
Time of veraison: slightly later than Pinot Noir
Grape yield: slightly lower than Pinot Noir
Wood ripening: good to very good
Normal stem height:
Winter Pruning: eyes/buds per sq. metre of land occupied by the plant.
Disadvantages: In most years it needs protective spraying against powdery mildew.