Funding for this research was provided by:
the Breeding Project of Shandong Province (2017LZN014)
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 Project of Major Agricultural Application Technology Innovation in Shandong Province (2018)
Article History
Received: 21 May 2018
Revised: 28 January 2019
Accepted: 5 February 2019
First Online: 9 February 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.