Winegrowers Supplies -  Vine variety information

Sirius  (originally known as Gf. Ga-51-27)

Mother: Bacchus
Father: Villard Blanc (Seyve Villard 12-375)

A white Piwi/disease-resistant variety.

Year of breeding: 
Country of origin: Germany
Breeder/License holder: Bundesforschungsanstalt für Rebenzüchtung Geilweilerhof,
Number of clones: 0

Year of entry into the German Federal Office's Varieties Register: 1995
Area planted in Germany in :        hectares
Area planted in England: unknown

Wine Character - colour: yellow-green
                      - bouquet: a pleasant fruity aroma
                      - palate: strong wine, fruity, neutral


Time of bud-burst: 

Strength of growth: strong
Growth of side-shoots: very low

Flowering time: 
Flowering strength: very high

Leaf: - size:                                    - shape: 
        - colour: 
        - surface undulation:                - petiolar sinus: 
The leaves are sufficiently resistant to phylloxera.

Grape bunch: - size: large, 'shouldered'   - density: loose
Berries:        - size: large                     - shape: 
                   - skin colour: 

Time of veraison: middle to middle-early
Time of harvest: 

Grape yield: very high, reliable
Must-weight: medium
Must-acidity: medium

Wood ripening: good
Winter hardiness: very good
Wood colour: 

Chlorosis resistance: 
Susceptibility to - Oidium: average           - Peronospora: very low
                       - Botrytis: low                - Roter Brenner: 
                       - Phomopsis                   - Stem-atrophy: 

Preferred soil: 
Suitable rootstocks: SO4 or 5BB

Normal stem height: 
Normal row spacing: 1.8 to 2.0m
Vine spacing in the row: 

Winter Pruning:                      eyes/buds per sq. metre of land occupied by the plant.

Advantages: Very high yield. 

Disadvantages: A good site is necessary.