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Article History

Received: 11 June 2021

Accepted: 28 October 2021

First Online: 8 November 2021

Declarations

:

: The di-haploid <i>P. simonii</i> × <i>P. nigra</i> and <i>N. benthamiana</i> were provided by the State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China. The pBI-121-GFP vector was a long-term preservation material in our laboratory. The study complies with relevant institutional, national, and international guidelines and legislation.

: Not applicable.

: The authors declare that they have no conflict of interest.