Funding for this research was provided by:
National Natural Science Foundation of China (NSFC31702171, NSFC 31572454)
Text and Data Mining valid from 2020-03-06
Received: 10 May 2019
Accepted: 28 February 2020
First Online: 6 March 2020
Ethics approval and consent to participate
: These plant materials are widely used all over the world, and no permits are required for the collection of plant samples. The plant materials were collected by the Forage Seed Laboratory of China Agricultural University, China. This article did not contain any studies with human participants or animals, and did not involve any endangered or protected species.
: Not applicable.
: The authors declare that they have no competing interests.