Funding for this research was provided by:
National Natural Science Foundation of China (No. 31270706)
Priority Academic Program Development of the Jiangsu Higher Education Institutions
Text and Data Mining valid from 2018-05-25
Received: 14 January 2018
Accepted: 14 May 2018
First Online: 25 May 2018
Ethics approval and consent to participate
: The study materials were planted in Xiashu Forest Farm of Nanjing Forestry University, located in Jurong County, Jiangsu province, China. The test fields belong to the local government or the university, and no endangered or protected species were involved in this study. The experimental research on Populus complied with the institutional, national, or international guidelines. No permissions were required to collect the plant samples.
: The authors declare that they have no competing interests.
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