Amanatsu

or is a yellow citrus fruit, a cultivar that originated as a mutation of the or . It was discovered in 1935 in Tsukumi, Oita Prefecture, Japan. The original natsu mikan that served as the basis for amanatsu was found in Yamaguchi Prefecture around 1700.

Names

Amanatsu means "sweet summer" in Japanese. In Japan, the fruit is known as , but also colloquially the amanatsu, , , & .

Description

Natsumikan is about the size of grapefruit and oblate in shape. The fruit contains 12 segments and about 30 seeds. The rough textured fruit is easy to peel and is commonly eaten fresh. It is also used for wide variety of products ranging from marmalades to alcoholic beverages.

Cultivation

Natsumikan is grown commercially in Japan, notably in Yamaguchi, Kumamoto and Ehime prefecture. The city of Hagi is famous for its natsumikans, particularly when used in natsumikan juice and ice cream.

Yamaguchi Prefecture takes such pride in their natsumikan industry that the typically white crash barriers of Japan were changed to a befitting orange.

Genetics

The natsumikan tree is believed to be genetically derived from the pomelo (Citrus grandis or Citrus maxima).

Medicine

Researchers found that immature natsumikan peel is beneficial for the treatment of chronic allergic dermatitis in mice.

Gallery

• The large bearing tree.
  The large bearing tree.
• Locally at Nagato, Yamaguchi.
  Locally at Nagato, Yamaguchi.
• At street side in Hagi, Yamaguchi.
  At street side in Hagi, Yamaguchi.
• On Nokonoshima Island.
  On Nokonoshima Island.
• Blossoms.
  Blossoms.
• On tree.
  On tree.
• Fruit.
  Fruit.

See also

• Citrus tristeza virus
• Daidai
• Japanese citrus
• Mikan

Further reading

• Natsudaidai Template:Webarchive at the Citrus Variety Collection