State Viticulture Institute Freiburg

History and Development

The State Viticulture Institute Freiburg (Staatliches Weinbauinstitut Freiburg) is a leading German research institution specializing in grapevine breeding, plant protection, and enology. The institute was founded in 1920 in the city of Freiburg im Breisgau (Baden-Württemberg). Its primary objective was to restore and modernize the viticulture industry of Southwestern Germany following the phylloxera epidemic.

For decades, the institute has fulfilled a state mandate to develop next-generation grape varieties capable of resisting fungal diseases without intensive chemical vineyard treatments. The Freiburg scientific school has made fundamental contributions to European breeding by combining the resilience of Asian and American wild grapevine species with the aromatic profile of classic European cultivars.

Core Scientific Activities

The institute's activities are focused on the following areas:

• Breeding of Complex Fungus-Resistant Varieties: Developing wine grape varieties with robust genetic immunity to downy mildew, powdery mildew, and botrytis bunch rot to advance eco-friendly viticultural practices.
• Genetic Analysis of Resistance: Studying the transmission mechanisms of protective genes and performing DNA screening of seedlings to accelerate the selection process for promising hybrids.
• Rootstock and Clonal Trials: Testing and deploying phylloxera-resistant rootstocks adapted to the specific soil and climatic conditions of mountainous regions.
• Plant Protection Frameworks: Monitoring pathogens, analyzing vineyard ecology, and establishing biological disease control methodologies.

Breeding Results and Created Varieties

Breeding programs led by scientists such as Johannes Zimmermann and Norbert Becker shaped the contemporary commercial assortment of northern European viticulture.

The most celebrated grape varieties bred by the Freiburg Institute include:

Wine Grape Varieties (Bred for Winemaking):

• Solaris: An ultra-early white fungus-resistant grape variety created by Norbert Becker in 1975 from a cross of Merzling × Gm 6493 (Zarya Severa × Muscat Ottonel). It is characterized by exceptionally high sugar accumulation, winter hardiness, and extreme disease resistance. It is highly popular in northern viticultural regions.
• Johanniter: A white wine variety developed by Johannes Zimmermann in 1968 from a cross of Riesling Weiss × the complex hybrid lineage Freiburg 589-54. The variety inherited the aromatic architecture of Riesling while maintaining high disease resistance.
• Muscaris: A white cultivar obtained by Norbert Becker from the parental cross Solaris × Muskateller, noted for delivering stable acidity and a pronounced muscat bouquet.
• Souvignier Gris: A pinkish-grey wine grape variety created by Norbert Becker in 1983. According to verified VIVC genetic data, its true pedigree is Seyval Blanc × Zaehringer. It features thick skins resistant to botrytis and yields full-bodied, well-structured wines.
• Monarch: A red wine variety developed from a cross of Merzling × Dornfelder, yielding deeply colored wines with soft tannins.

Currently, the State Viticulture Institute Freiburg coordinates Germany's federal programs for deploying environmentally sustainable commercial viticultural methods.