Funding for this research was provided by:
The project was supported by Central Public-interest Scientific Institution Basal Research Fund for Chinese Academy of Tropical Agricultural Sciences (1630062016003)
Received: 13 October 2017
Accepted: 3 April 2019
First Online: 27 May 2019
: All authors works/study in the South Subtropical Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, 524091, China.
: Not applicable.
: Not applicable
: The authors declare that they have no competing interests.
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