- Vine variety information
(originally known as Gm 6494-5)
Mother: Saperavi Severnyi (= Précoce de Malingre x Vitis amurensis)
Father: St Laurent
A red Piwi/disease-resistant variety. The most exciting Piwi red variety for cold climates.
Year of breeding: 1964
Country of origin: Czechoslovakia. During the 'cold war' the breeder Professor V. Kraus gave some seeds to
Professor Helmut Becker (1927-1990) of Geisenheim, who realised the significance or this breeding
programme because of the high peronospora and winter-frost resistance of the
asiatic Vitis amurensis. Professor Becker then continued the development of
these 'amurensis' varieties of which Rondo is one.
Breeder/License holder: Forschungsanstalt Geisenheim / Rheingau,
Institut für Rebenzüchtung und Rebenveredlung
Number of clones:
Year of entry into the German Federal Office's Varieties Register: 1997
Area planted in Germany:
hectares (in Rheinhessan)
Area planted in England (as at August 2004): 19.6 hecatres, 11th largest
It is also grown in Sweden (Gottland), Denmark and Holland
Wine Character - colour: dark ruby red, without blue nuances (so it can
- palate: a full-bodied red wine without any strange tone
Time of bud-burst: early-middle
Strength of growth: medium-high, shoots tend to hang downwards
Growth of side-shoots: medium
Flowering time: very early
Flowering strength: high
Leaf: - size:
- colour: very dark green
- surface undulation:
- petiolar sinus:
Grape bunch: - size:
Berries: - size:
- skin colour:
Time of veraison: very early
Time of harvest: very early
Grape yield: medium-high
Wood ripening: early and very good
Winter hardiness: very high
Chlorosis resistance: very high
Susceptibility to - Oidium: low-medium
- Peronospora: not susceptible
- Botrytis: low
- Roter Brenner:
- Stem-atrophy: not susceptible
In the UK it is
slightly susceptible to oidium so an early spray and pre-flowering spray are advisable.
Preferred soil: any soils suitable for viticulture with good water supply.
Because of the early bud-burst it is important that vineyards should not be
prone to late spring frost.
Suitable rootstocks: SO4,
5C, 125AA and 5BB.
Normal stem height:
Normal row spacing:
Vine spacing in the row:
Normal and wide-planting training systems are possible.
Since the shoots tend to hang downwards a high training system is advantageous.
Winter Pruning: 6
eyes/buds per sq. metre of land occupied by the plant. Always crops well,
whether it is spur pruned
or long cane pruned.
Advantages: Very high quality full-bodied dark red wine. Can be grown
on any site which is not prone to late spring frost. Consistently high yield and
ripeness. A tribute to the life's work of Professor Becker.
In the UK in certain years (according to the weather) it can be attacked by
wasps, as with all early ripening grape varieties (e.g. Siegerrebe, Madeleine Angevine).