Objective  Breeding a new resistant hybrid rice variety by testing cross of resistant sterile line and high quality restorer line.

  Method  F₁ hybrid seeds of Yuejingsimiao 2 and blast-resistant intermediate material U03 were treated by 350Gy60Co-γirradiation, a mutant character as small grains, dwarf and erect panicle was found in M₂. After the Pedigree selection and identification of rice blast resistance, the plant with field number 12HR6-12 was selected to hybrid with sterile line M76A. In 2013-2014, multipoint variety comparative tests were carried out in Jianyang, Fujian Province and Sanya, Hainan Province, and the new restorer line was named Fuhui 212. In 2015, M76 you 212 performed very well with a high yield and rice blast-resistant at the mid-season rice regional trials in Fujian.It is entering continuing tries and produce trial at 2016 and 2017 respectively.

  Result  The mean yield of M76 You 212 is 8763.60 kg•hm^-2 at the regional trials in Fujian in two consecutive years, which was 8.61% higher than that of the check variety, Ⅱ Youming 86. Over all, M76 You 212 showed high and stable yield, moderate resistance to rice blast and good grain quality at regional trials, it was certified by the Crop Variety Approval Committee of Fujian in 2018.

  Conclusion  M76 You 212, the new three-line hybrid rice variety, is characterized by high yield, good grain quality and blast resistance and suitable for middle-season rice cultivation in Fujian Province.