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|Hybrid parentage||'Nourin No.1' × 'Nourin No.22'|
|Subspecies||O. s. subsp. japonica|
|Cultivar group||temperate japonica|
|Cultivar||Nourin No.100 (Etsunan No.17)|
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 has become very popular now in Japan, in part due to its good appearance. It is one of the most highly grown varieties of rice in the country, and its taste is said to differ per region.
- Highly susceptible to blast disease
- Its stem collapses easily when mature