Funding for this research was provided by:
National Natural Science Foundation of China (31901397)
Scientific Funds of Beijing Academy of Agriculture and Forestry Sciences (KJCX20180101 and KJCX20180706)
Beijing Technology Plan Project (171100007217001)
Received: 14 April 2019
Accepted: 9 October 2019
First Online: 29 October 2019
Ethics approval and consent to participate
: <i>C. breviculmis</i> cultivar ‘Four seasons’ (China accession No. S-SV-CL-006-2010) used in this study was identified and cultivated by ourselves. And we complied with China and international guidelines to collect the plants materials.
: Not applicable.
: The authors declare that they have no competing interests.