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Vine variety:
Sirius (originally known as Gf. Ga-51-27)
Mother: Bacchus
Father: Villard Blanc (Seyve Villard 12-375)
Year of breeding: (protected since 1995)
Country of origin: Germany
Year of entry into the German Federal Office's Varieties Register:
Breeder/License holder: Bundesforschungsanstalt für Rebenzüchtung Geilweilerhof,
Siebeldingen/Rheinpfalz
Number of clones: 0
Area planted in Germany in :
hectares
Area planted in England (as at August 2004): unknown
Wine Character - colour: yellow-green
- bouquet: a pleasant fruity aroma
- palate: strong wine, fruity, neutral
Expert tasters and even Gas-chromatograph measurements ('aromagraphs') cannot distinguish this wine from pure Vinifera varieties.
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.
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