The fruit can be easily peeled by hand. It has a sugar content of between 12% and 13%, with some fruits reaching 15%. The weight of a fruit is 210 grams, relatively large for a tangor, and the fruit is reddish-orange colour. It fruits in late January. It does not produce pollen, so it must be pollinated by another species of citrus.
Its systematic name is Kankitsu Kuchinotsu 32 Gō (カンキツ口之津32号)[clarification needed] after Kuchinotsu, Nagasaki where it was bred. It was hybridized in 1984, with its name registered in 2004 and the variety registered in 2005. The first fruits came on sale in 2007.
- "Reikou" (in Japanese). National Agriculture and Food Research Organization. Archived from the original on January 23, 2013. Retrieved April 18, 2012.
- YOSHIOKA, Terutaka; et al. (2009). "New Citrus Cultivar 'Reikou'" (PDF). Bulletin of the National Institute of Fruit Tree Science (in Japanese). 8: 15–23. ISSN 1347-3549.
- "Reikō" (in Japanese). fruit-sommelier.com. Retrieved 18 April 2012.
- Keisuke Nonaka; Masayuki Kita; Yoshinori Ikoma; Hiroshi Fukamachi; Atsushi Imai; Terutaka Yoshioka; Masahiko Yamada (2012). "Genetic Differences and Environmental Variations in Carotenoid Contents of Fruit Flesh in Parental Population Used in Citrus Breeding in Japan". J. Amer. Soc. Hort. Sci. 137 (4): 243–9.
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