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Article History

Received: 15 May 2023

Accepted: 2 November 2023

First Online: 13 November 2023

Declarations

:

: In this study, tissue culture plantlets of <i>Populus hopeiensis</i> were provided from the State Key Laboratory of Efficient Production of Forest Tree Resource, Beijing Forestry University, China. As one of the most widely distributed and commonly cultivated species of poplar in China, <i>Populus hopeiensis</i> is not an endangered species. Thus, no specific permits are required for sample collection of <i>Populus hopeiensis.</i> All methods in this study were performed in accordance with relevant institutional, national, and international guidelines and legislation.

: Not applicable.

: The authors declare no competing interests.