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Hybrid parentage'Nourin No.1' × 'Nourin No.22'
SubspeciesO. s. subsp. japonica
Cultivar grouptemperate japonica
CultivarNourin No.100 (Etsunan No.17)
Marketing namesKoshihikari
OriginJapan, 1956

Koshihikari (Japanese: コシヒカリ, 越光, Hepburn: Koshihikari) is a popular cultivar of Japonica rice cultivated in Japan as well as Australia and the United States.

Koshihikari was first created in 1956 by combining 2 different strains of Nourin No.1 and Nourin No.22 at the Fukui Prefectural Agricultural Research Facility. It is one of the most highly grown varieties of rice in Japan[1] and is exported to other countries as a premium product.[2]


The character for koshi () is used to represent the old Koshi Province, which stretched from present-day Fukui to Yamagata. Koshihikari can be translated as "the light of Koshi".

Related varieties[edit]

Other rice varieties close to its strains, such as Akitakomachi, Hitomebore, and Hinohikari were subsequently created by cross-breeding Koshihikari with other Japanese varieties of rice.


  • Highly susceptible to blast disease
  • Its stem collapses easily when mature

See also[edit]


  1. ^ Ohtsubo, Ken'ichi; Okunishi, Tomoya; Suzuki, Koitaro (2005). "Processed novel foodstuffs from pregerminated brown rice". In Toriyama, K; Heong, KL; Hardy, B (eds.). Rice is Life: Scientific Perspectives for the 21st Century. International Rice Research Institute. ISBN 9789712202049.
  2. ^ Kodachi, Hisao (2018-10-16). "Japan's China-bound rice exports set to soar". Nikkei Asian Review. Retrieved 2019-01-24.

External links[edit]