Fu‘an Niu^1,4 , Huangwei Chu^1,4 , Bin Sun^1,4 , Jihua Zhou^1,4 , Anpeng Zhang¹ , Yiwen Huang^1,2 , Yao Li^1,3 , Yao Yao^1,2 , Can Cheng^1,4 , Liming Cao^1,4

1 Crop Breeding and Cultivation Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
2 School of Agricultural Sciences, Jiangxi Agricultural University, Nanchang, 330045, China
3 College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
4 Shanghai Agri-food Storage and processing engineering technology research center, Shanghai, 201403, China
Author    Correspondence author
Molecular Plant Breeding, 2023, Vol. 14, No. 2   doi: 10.5376/mpb.2023.14.0002
Received: 30 Nov., 2022    Accepted: 07 Dec., 2022    Published: 20 Jan., 2023

This article was first published in Molecular Plant Breeding in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Niu F.A., Chu H.W., Sun B., Zhou J.H., Zhang A.P., Huang Y.W., Li Y., Yao Y., Cheng C., and Cao L.M., 2023, Molecular marker assisted breeding of a new Japonica hybrid rice ‘Shenyou28’ with good quality and disease resistance, Molecular Plant Breeding, 14(2): 1-8 (doi: 10.5376/mpb.2023.14.0002)

The development of Japonica hybrid rice is of great significance to ensure supply of good quality Japonica rice and food security in China. Aiming at the problems of late growth period, unstable yield, and the need to improve rice quality and seed production yield of Japonica hybrid rice, a new Japonica hybrid rice combination 'Shenyou28' with early maturity, good quality, blast resistance, stable and high yield and easy seed production was developed by using molecular breeding techniques including high-density rice gene chip. 'Shenyou28', bred by Shanghai Academy of Agricultural Sciences, is a three-line Japonica hybrid rice with 'Shen21A' as sterile line and 'Shenhui26-28' as restorer line. For two-year regional trials from 2018 to 2019, the average output were 10 588.5 kg/hm², which was 11.6% higher than the control variety 'Huayou14'. For the one-year production trial, the output reached 10 473.0 kg/hm², which was 4.8% higher than the control variety 'Huayou14'. 'Shenyou28' has good quality, reaching the second grade of national standard, and has fragrance because it carries fragrance gene badh2-p-5^’UTR. It also has good resistance to rice blast and bacterial blight because it aggregates the rice blast resistance genes Pi2, Pita, Pib, Pi9, Pi54, Pikm, Pit, and bacterial blight resistance gene Xa21. It was approved by the Crop Variety Certification Committee of Shanghai in 2020. The breeding process, variety characteristics and key points of high yield mechanized seed production technology of 'Shenyou28' are introduced in this study.

Japonica hybrid rice; ‘Shenyou28’; Molecular marker; Good quality; Disease resistance