- Allogène (après 1900)
- < 2 Ha
A hybrid of Zarya Severa and Sankt Laurent created in 1964 at the Geisenheim Research Centre (D), Rondo is a very early variety resistant to mildew, although less so to powdery mildew. This red-skinned interspecific hybrid is used to improve the colour of blends. Its presence in German-speaking Switzerland is minimal.