Koshu

The white grape variety is cultivated in Japan; however, the origin and parentage (parentage) is unknown. Synonyms are Kochiou, Konshu, Koshiou, Koshiourebe and Koushuu. It is named after the former province of Kōshū, which roughly coincides with the present Yamanashi Prefecture. According to one hypothesis, it reached China from Europe via the Silk Road as early as the 8th century and was introduced to Japan by Buddhist monks. According to a second hypothesis, it was discovered by an Amemiyas Kageyu around 1186 in the south of the Kofu Valley at the foot of Mount Fujiyama. According to DNA analyses carried out in 2006, it is a species of Vitis vinifera, which makes the hypotheses unlikely. It is closely related to the Koshu Sanjaku variety. Koshu was a crossing partner of the new varieties Koshu Sémillon and Komahikari.

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Koshu

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