Wine grape variety grown in Apulia

Sylvaner verde b.

The Sylvaner Verde b. vine has international and national distribution and is also present in Apulia, where it is suitable for cultivation throughout the region. 

Origin and Historical Outline

The Sylvaner Verde b. white wine grape variety probably originated in Austria, specifically in Styria (Goethe, 1878). The vine is currently grown mainly in Central Europe (Germany and Switzerland). In Italy it is mainly cultivated in Trentino and Alto Adige.  After suitable experimentation, it was also introduced in Apulia


Synonyms

Silvaner verde, Silvaner bianco Franken. 


Shoot tip: medium-expanded, green-yellowish, hairless, slightly curved.

Leaf: medium-small, circular, hairless, often trilobate or almost lobeless. V or U-shaped petiole sinus. Open upper lateral sinuses or with slightly overlapping lobes. Slightly rolled blade and slightly sloping lobes; reddish ventral part of the stalk.

Bunch: small, cylindrical, often with a wing, slightly dense.

Berry: medium-size, spherical towards ovoid. Pruinose, thick, soft, yellow greenish skin with typical spots.

Time of bud burst: intermediate

Flowering time: intermediate-early

Veraison: intermediate-early

Ripening: intermediate-early

Isoenzymes

GPI: 5

PGM: 6

Vigour: fair

Average bunch weight: 210 g (min 130 g – max 280 g)

Average berry weight: 1.9 g (min 1.5 g – max 2.5 g)

Number of seeds per berry: 2 3

Average rachis weight: 13 g

Fertility of buds: 2 – 1

Potential fertility: 1.8

Actual fertility: 1.5

Vine with a good and consistent production. The better suited soils are deep, light and permeable. The vine prefers being low-trained with a close plant spacing layout.

Susceptible to rot, oidium and excoriose. Good resistance to cold winters, not to spring frost.

Alcoholic content: 11 – 13 % by vol.

pH: 3.3 – 3.6

Total acidity: 5 – 8 g/l

The Sylvaner Verde b. grape is used in Apulia exclusively for vinification, in blends with other grape varieties. The wine has a straw-yellow colour tending towards greenish, a special perfume and is pleasant, dry, bitterish, quite acidic and alcoholic, velvety and harmonious. It improves with slight ageing.

The Sylvaner Verde b. vine is widespread throughout Central Europe. In Italy, in several cases its grape enters the composition of PDO wines. It is present in Apulia, where it is registered among the varieties suitable for cultivation throughout the region.

Antonacci Donato
antonacci.dona@gmail.com

The data sheet of the Sylvaner Verde b., vine variety, revised and updated, is extracted from: Antonacci Donato (2006). Viti di Puglia, Adda publisher. Its use is granted by the author citing the source.