Institute for Grapevine Breeding Geilweilerhof
History and Development
The Institute for Grapevine Breeding Geilweilerhof (Institut für Rebenzüchtung Geilweilerhof) is a research center for grapevine genetics, ampelography, and breeding. It is located in the municipality of Siebeldingen (Rhineland-Palatinate). The research station was founded in 1926 by breeder Peter Morio. In 2008, the institute became part of the Julius Kühn Institute (JKI), the Federal Research Centre for Cultivated Plants.
The primary task of the institute is to breed grape varieties that possess natural resistance to fungal diseases and do not require intensive chemical treatments. Breeding work is based on crossing European grapevines (Vitis vinifera) with American and Asian species. Geilweilerhof maintains the Vitis International Variety Catalogue (VIVC). The coding system developed by the institute, including individual variety identification numbers and Prime Names, is utilized as the official foundation for codification within our own VINEYARD Encyclopedia.
Core Scientific Activities
The institute's activities are focused on the following areas:
- Breeding of Complex Fungus-Resistant Varieties: Developing new grape varieties with genetic immunity to downy mildew, powdery mildew, and black rot to minimize fungicide applications in vineyards.
- Marker-Assisted Selection: Utilizing molecular markers (MAS) to select hybrid seedlings that contain multiple distinct resistance genes simultaneously (e.g., Rpv and Ren loci), which prevents pathogens from overcoming the vine's immunity.
- Preservation of Grapevine Germplasm: Maintaining national and international grapevine collections. The institute's living collection contains over 3,500 distinct accessions.
- Automated Vineyard Evaluation: Using technical complexes with machine vision systems for the automated analysis of vine conditions and crop yield in field environments.
Breeding Results and Created Varieties
Scientists at the institute proved that complex interspecific hybrids can yield high-quality wines that comply with European standards, allowing complex fungus-resistant varieties to gain official regulatory approval within EU classifications.
The most celebrated grape varieties bred by the Geilweilerhof Institute include:
Wine Grape Varieties (Bred for Winemaking):
- Regent: Created by Professor Gerhardt Alleweldt in 1967 and officially released in 1996 from a cross of Diana × Chambourcin. It is the most widely planted red fungus-resistant cultivar in Germany, producing deep-colored, full-bodied wines with soft tannins.
- Calardis Musqué: A white wine variety developed by Professor Gerhardt Alleweldt in 1964 from a cross of Bacchus Weiss × Seyval. It possesses high disease resistance and yields wines with a distinct muscat and floral aroma.
- Phoenix and Orion: Early-ripening white wine grape cultivars widely utilized across organic commercial vineyards in cool-climate viticultural regions.
- Morio Muscat: A white cultivar bred by Peter Morio in 1928 by crossing Sylvaner × Traminer, celebrated for delivering an intensely powerful muscat aroma.
Currently, the Institute for Grapevine Breeding Geilweilerhof (JKI) coordinates Germany's state programs for engineering environmentally sustainable commercial vineyards.