Funding for this research was provided by:
National Natural Science Foundation of China (41676128, 41476141)
China Agriculture Research System (CARS-50)
National Key Technology Support Program (2015BAD13B05)
Article History
Received: 17 October 2017
Revised: 11 March 2018
Accepted: 11 March 2018
First Online: 22 March 2018