Funding for this research was provided by:
Natural Science Foundation of Shaanxi Province (2018JQ2022)
Shaanxi Province (2017BSHEDZZ100)
China Postdoctoral Science Foundation (2018T111102)
Postdoctoral Research Foundation of China (2016M600815, 2017M613213)
Northwest Agriculture and Forestry University (Z111021602)
Northwest A and F University (Z109021632)
Article History
Received: 4 November 2018
Accepted: 10 January 2019
First Online: 18 January 2019