(Yu.Tanaka ex Swingle) [[.]]
Citrus unshiu is a seedless and easy-peeling citrus species, also known as unshu mikan, cold hardy mandarin, satsuma mandarin, satsuma orange, and tangerine. It is of Chinese origin, but was introduced to the West via Japan.
The unshiu is known as wēnzhōu mìgān (温州蜜柑) in China, and mikan in Japan (or formally unshū mikan, the Japanese reading of the characters used in Chinese). In both languages, the name means "honey citrus of Wenzhou" (a city in Zhejiang province, China). An alternative Chinese name, (Chinese: 无核桔; pinyin: wúhé jú), means "seedless mandarin".
Its fruit is "one of the sweetest citrus varieties, with a meltingly tender texture" and usually seedless, about the size of other mandarin oranges (Citrus reticulata). One of the distinguishing features of the satsuma is the thin, leathery skin dotted with large and prominent oil glands, which is lightly attached around the fruit, enabling it to be peeled very easily in comparison to other citrus fruits.
Satsumas grown in humid areas may be ripe while the skin is still green.
Jesuits brought the fruit from Asia to North America. Groves were started by Jesuits in the 18th century in the Jesuit Plantation upriver from New Orleans, Louisiana, then a part of New Spain. The municipal street "Orange" in New Orleans, was originally named "Rue Des Orangers" and the site of the Jesuit grove. The groves were later re-cultivated farther south in Plaquemines Parish to provide greater protection from harmful frosts, and have continued to the present day. The Becnel family are the largest growers of Louisiana Citrus.
The fruit became much more common in the United States starting in the late 19th century. In 1876 during the Meiji period, Owari mikans were brought to the United States from the Satsuma Province in Kyūshū, Japan, by a spouse of a member of the U.S. Embassy, who renamed them satsumas. Between 1908 and 1911 about a million Owari mikan trees were imported throughout the lower Gulf Coast states. Owari is still commonly grown in Florida. The towns of Satsuma, Alabama; Satsuma, Florida; Satsuma, Texas; and Satsuma, Louisiana were named after this fruit. By 1920 Jackson County in the Florida Panhandle had billed itself as the "Satsuma Capital of the World." However, the commercial industry was damaged by a −13.3 °C (8.1 °F) cold snap in 1911, a hurricane in 1915, and a very cold period in the late 1930s. Satsumas are cold-hardy, and when planted in colder locations, the fruit becomes sweeter from the colder temperatures. A mature satsuma tree can survive down to −9 °C (15 °F) or even −11 °C (12 °F) for a few hours. Of the edible citrus varieties, only the kumquat is more cold-hardy. Satsumas rarely have any thorns, an attribute that also makes them popular. They can be grown from seed, which takes about 8 years until the first fruits are produced, or grafted onto other citrus rootstocks, trifoliate orange being one of the most popular.
= Possible non-hybrids
- Amanatsu (pumello hybrid)
- Clausellina
- Kinkoji unshiu (C. obovoidea(kinkoji) × C. unshiu)
- Dekopon is a kiyomi hybrid
- Kobayashi mikan (C. natsudaidai × C.unshiu)
- ? Natsudaidai (pomelo × mikan)
- Shonan Gold
- Schlegel, Rolf (2009). Dictionary of Plant Breeding, Second Edition. CRC Press. p. 437. ISBN 9781439802434.
It is of Chinese origin, but introduced to the West via China; in Japan it is known as "unshu mikan," in China, as "wenzhou migan"; recorded cultivation of the "wenzhou migan" date back some 2,400 years; it was listed as a tribute item for Imperial consumption in the TANG Dynasty; the best record of the cultivation of this variety in ancient China is from Jijia Julu, written by Han YAN, the governor of the region and published in 1178"
- Michel H. Porcher. "Sorting Citrus names". The University of Melbourne.
- "Japanese Mikan and Satsuma Oranges". hawaii.edu.
Mikan is a tangerine-like citrus fruit that is grown in warmer regions of Japan in large quantities. Many different varieties have been introduced to Japan from China since the eighth century, but since the late 19th century the most important variety has been the unshu.
- "Taxon: Citrus unshiu Marcow". Germplasm Resources Information Network(GRIN), United States Department of Agriculture.
probable origin in Kyushu islands, Japan or imported from China to Japan
- Misaki, Akira (November 1999). "紀州有田みかんの起源と発達史(The Origin and the Development-Process of "Kisyu Arida Mikan(Arida Mandarin)")". 経済理論(The Wakayama Economic Review) (in Japanese). University of Wakayama. 292: 97–118.
(After the many years of research, Dr. Tanaka has concluded the place of origin of Satsuma is Nagashima, Kagoshima. Satsuma is a chance seedling of Sōkitsu, Mankitsu, or Tendaisankitsu introduced from Huangyan Zhejiang, China. It appeared in the early Edo period.)Archived by Arita Mikan Database at http://www.mikan.gr.jp/report/kigen/index.html
- Branford, Jean (1978). A dictionary of South African English. Oxford University Press.
- "New universal mitochondrial PCR markers reveal new information on maternal citrus phylogeny". Tree Genetics. 7: 49–61. doi:10.1007/s11295-010-0314-x.
- Elisa Bosley. "In Season: Satsuma Oranges". CookingLight. Retrieved 2015-02-25.
- P. C. Andersen; J. J. Ferguson; T. M. Spann. "HS195/CH116: The Satsuma Mandarin". ufl.edu.
- "WWNO: Satsumas (2009-10-03)". Publicbroadcasting.net. 2009-10-03. Retrieved 2009-12-06.
- Barkley, NA; Roose, ML; Krueger, RR; Federici, CT. "Assessing genetic diversity and population structure in a citrus germplasm collection utilizing simple sequence repeat markers (SSRs)". doi.org. 112: 1519–1531. doi:10.1007/s00122-006-0255-9. PMID 16699791.
- "kinkoji_unshiu". ucr.edu.
|Wikimedia Commons has media related to Citrus unshiu.|