Zhao, Shugang https://orcid.org/0000-0002-8786-0382
Wang, Hongxia
Liu, Kai
Li, Linqing
Yang, Jinbing
An, Xiuhong
Li, Pingping
Yun, Linying
Zhang, Zhihua
Funding for this research was provided by:
Natural Science Foundation of Hebei Province (C2019204270)
Science and Technology Research Project of the Universities of Hebei Province (QN2019159)
Research Foundations for Returned Scholars from Overseas of the Human Resources Dept. of Hebei Province (C20190345)
Article History
Received: 5 July 2020
Accepted: 2 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: Walnut is one of widespread fruit trees in China, and it is not an endangered species. The walnut trees were from the Experimental Field of Hebei Agricultural University. No specific permits are required for sample collection on walnut.
: Not applicable.
: The authors declare that they have no competing interests.