Funding for this research was provided by:
National Natural Science Foundation of China (31371626)
Shaanxi University of Science and Technology (2015KTZDNY01-01-01)
Shaanxi Agricultural Department 2017 Provincial Modern Crop Seed Industry Project (20171010000004)
Received: 7 July 2019
Accepted: 29 April 2020
First Online: 29 July 2020
Ethics approval and consent to participate
: This article does not contain any studies with human participants or animal performed by any of the authors.
: Not applicable.
: The authors declare that there are no competing interests.