Funding for this research was provided by:
the Elite Program of Chinese Academy of Agricultural Sciences,
the International Science & Technology Cooperation Program of China (2013DFA31840)
and the Agricultural Science and Technology Innovation Program (CAAS-ASTIP-2016-LVRI-03)
Text and Data Mining valid from 2018-06-13
Received: 20 December 2017
Accepted: 9 May 2018
First Online: 13 June 2018
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interests.