Funding for this research was provided by:
National Natural Science Foundation of China (3177131276)
Key Laboratory of Superior Forage Germplasm in the Qinghai-Tibetan plateau (2020-ZJ-Y03)
Received: 21 July 2020
Accepted: 2 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: The authors complied with all relevant institutional, national and international guidelines.
: Not applicable.
: The authors declare that they have no conflict of interest.