Funding for this research was provided by:
the International Cooperation and Exchange Projects of Sichuan Province (2017HH0031, 2018HH0016)
the International S&T Innovation and Cooperation Project of Sichuan Province (2019YFH0126)
The National Natural Science Foundation of China (31801210)
Natural Science Foundation of Hubei Province (Q20182104)
the Start-up Foundation of Hubei University of Medicine (2016QDJZR11)
Received: 17 July 2019
Accepted: 26 November 2019
First Online: 17 December 2019
Ethics approval and consent to participate
: The rice seeds, Se-free rice (<i>Oryza sativa</i> L.) CR727 and its hybrid progeny Se-rich red grain rice Z2057A/CR727 were procured from the collection of Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, China with permission. Our project does not used transgenic technology therefore it does not require ethical approval.
: Not applicable.
: The authors declare that they have no competing interests.