Funding for this research was provided by:
Central Public-interest Scientific Institution Basal Research Fund for Chinese Academy of Tropical Agricultural Sciences (1630052018003, No. 1630052016005)
The Program of Hainan Association for Science and Technology Plans to Youth R & D Innovation (HAST201630)
Text and Data Mining valid from 2019-06-24
Received: 21 January 2019
Accepted: 12 June 2019
First Online: 24 June 2019
Ethics approval and consent to participate
: Our research is not involved in human subjects, human material, or human data that must be approved by any ethics committee.
: The work described has not been submitted elsewhere for publication, in whole or in part, and all authors listed have approved the manuscript for submission.
: The authors declare no competing interests.