Funding for this research was provided by:
National Key Research and Development Program of China (2016YFD0400902)
Construction of Science and Technology Innovation Team of Beijing Academy of Agriculture and Forestry (JNKST201620)
Article History
Received: 16 April 2018
Accepted: 26 June 2018
First Online: 3 July 2018
Compliance with ethical standards
: The author(s) declare that they have no competing interests.