Julius Kühn-Institut Bundesanstalt für Kulturpflanzen (JKI) is the German Federal Research Institute for Cultivated Plants. It is named for German agricultural scientist Julius Kühn (1825–1910).
It was formed in January 2008 when three research centres in the Federal Ministry of Food, Agriculture and Consumer Protection merged together:
It has centres at Braunschweig and Dahlem, and additional locations in Germany.
The Geilweilerhof Institute for Grape Breeding (Institut für Rebenzüchtung Geilweilerhof - IRZ) in Siebeldingen, Germany specializes in breeding grape vine varieties that combine resistance to fungal diseases, frost, and drought with superior wine qualities. It is part of a federal German agricultural research and breeding institute called Bundesanstalt für Züchtungsforschung an Kulturpflanzen. It developed the successful red Regent grape. It has experimental stations in Palatinate, Rheingau and Franconia and maintains germplasm of over 15,000 varieties. It has published the journal Vitis since 1957 and administers the Vitis International Variety Catalogue, a database of grapevine species and varieties.
On 1 January 2008 it was fused with the Julius Kühn-Institut.