The red grape variety is an interspecific new breed between Alicante Ganzin x Trousseau Noir, Synonyms are Calif 526, California S 26, Kek Royalti and Royalti. They are genes from Vitis rupestris and Vitis vinifera contain. The crossing of the hybrid was done in 1938 at the California Agricultural Experiment Station by Harold P. Olmo (1909-2006). At the same time, here is the very similar one Olmo grapes created with the same mother variety, both varieties were then released together in 1958. The late ripening royalty is moderately tolerant of the real and the wrong mildew, It produces dark colored wines that are very good as teinturier (Dye grape) are suitable. The variety is also called table grape used. It is mainly found in California Central Valley grown. A total of 97 hectares of vineyards were shown here in 2010 (Kym Anderson ).
Images: Ursula Brühl, Doris Schneider, Julius Kühn Institute (JKI)