Kernling
As chance would have it, the Kernling is a spontaneous mutation. The new grape variety was discovered in 1974 by Ludwig Hochdörffer in the German region of Pfalz. And it went like this:
During the grape harvest in 1974, Ludwig Hochdörffer discovered two clusters of a shoot with a slight red colour on a Kerner vine, next to all the white grapes. The name given to the grape variety is a combination of the original grape variety and a grape variety with a similar flavour. Kern refers to the mother vine Kerner and the ending ing refers to Riesling, as it is very similar to it. A Kernling often presents itself in a bright, straw-yellow colour and is characterised by an appealing acidity level as well as versatile aromas. The grapes ripen early in the region, which allows winegrowers to produce a wide variety of wines. The high profitability and storability of Kernling wines also allows them to develop remarkably over the years. The similarities between Kernling and Riesling cannot be denied.
Here you can read about it in detail: Website of the ’Kernlinghof"