Funding for this research was provided by:
Special Fund for Agro-scientific Research in the Public Interest (201003016)
Science and Technology Planning Project of Guangdong Province (2015B020237007, 2015A020209053)
National Key Research and Development Plan (2016YFD0800600)
Text and Data Mining valid from 2019-02-08
Accepted: 21 January 2019
First Online: 8 February 2019
Compliance with ethical standards
: The authors declare that the research complies with ethical standards.
: The authors declare that they have no conflict of interest.