The , also written yukou, is a

Japanese citrus Japanese citrus fruits were first mentioned in the ''Kojiki'' and ''Nihonshoki'', compiled in the 700s, and the ''Man'yōshū'' and ''Kokin Wakashū'', poetry anthologies compiled in the 700s and 900s, mention the Tachibana orange as a subject ...

found in the

Nagasaki Prefecture is a Prefectures of Japan, prefecture of Japan, mainly located on the island of Kyūshū, although it also includes a number of islands off Kyūshū's northwest coast - including Tsushima and Iki. Nagasaki Prefecture has a population of 1,246,4 ...

and

Saga Prefecture is a Prefectures of Japan, prefecture of Japan located on the island of Kyushu. Saga Prefecture has a population of roughly 780,000 and has a geographic area of . Saga Prefecture borders Fukuoka Prefecture to the northeast and Nagasaki Prefect ...

of Japan. Genetic analysis has shown it to be a cross between the

kishumikan The kishu mikan (''Citrus kinokuni'' ex Chōzaburō Tanaka, Tanaka), from Japanese , is a hybrid variety of mikan, or mandarin orange (''Citrus reticulata''), found in Southern China and also grown in Japan. The fruit is also known as ''Baby Ma ...

and koji, a part-

tachibana orange The tachibana orange (''Citrus'' × ''tachibana'', or ''Citrus reticulata'' subsp. ''tachibana'') is a variety of mandarin orange, a citrus fruit. They grow wild in the forests of Japan and are referred to in the poetry of the early Japanese and ...

hybrid native to Japan.
File:Citron Japonais.jpg, Yuko File:Yuukou1.jpg, Citrus Yuko File:Citrus yuukou4.jpg, Cross section of a Yuko

References

External links

The Yuko, a Native Japanese Citrus
{{Fruit-stub Chinese fruit Citrus hybrids Garden plants of Asia Japanese fruit Ornamental trees

See also

References

External links