Funding for this research was provided by:
National Natural Science Foundation of China (31471441 and 30860136)
Seven major crop breeding projects under the national Key Research and development program (2017YFD0100301)
Received: 17 May 2021
Accepted: 29 June 2021
First Online: 9 July 2021
: Not applicable.
: All the authors agreed to publish the manuscript.
: The authors declare that they have no competing interests.