Characteristics and Molecular Mechanism of Slow Vegetative Growth in Hexaploid Transgenic Poplar 741 With an Insect‐Resistance Gene

1 Introduction Polyploidisation, or whole-genome duplication, is widespread in plant evolution and significantly affects plant adaptability and species diversity (Gao et al. 2022; Wang, Wei, et al. 2020; Wang, Yu, et al. 2020; Zhang, Wang, et al. 2020; Zhang, Wu, et al. 2020).