Chunyou 84 is an indica-japonica hybrid rice combination developed from Chunjiang 16A, a late japonica CMS line with early anthesis time, and C84, an indi-ca-japonica intermediate type restorer line with wide compatibility. It has the charac-teristics of high yield potential, high seed production, excel ent agronomic characters, good resistance and wide adaptability. It was registered and released by Zhejiang Provincial Crop Variety Appraisal Committee in March, 2013. The breeding proce-dure, characteristics, major techniques of cultivation and seed production of Chunyou 84 were introduced in this paper.
