Funding for this research was provided by:
Significant Application Projects of Agriculture Technology Innovation in Shandong Province (SD2019ZZ010)
the Technology System of Modern Agricultural Industry in Shandong Province (SDAIT-19-01)
the Special Foundation for Distinguished Taishan Scholar of Shandong Province (No.ts201712057)
the Livelihood Project of Qingdao City (19-6-1-64-nsh)
the Project of Agricultural Science and Technology Fund in Shandong Province (2019LY002, 2019YQ010)
the Key Research and Development Project of Shandong Province (2019LYXZ009)
Received: 10 May 2020
Accepted: 23 June 2020
First Online: 1 July 2020
Ethics approval and consent to participate
: Not applicable. The tea plants used in this study were provided by Tea Research Institute of Qingdao Agricultural University. It does not require ethical approval.
: Not applicable.
: The authors declare that they have no competing interests.