Application of polygene polymerization for insect-resistant poplar breeding

Abstract

A major goal of poplar breeding is to obtain new insect-resistant poplar varieties through genetic engineering. However, engineering poplars with only a single insect-resistant gene has limitations, such as narrow insecticidal bands and the rapid development of insect tolerance to the gene. To expand insecticidal bands, delay the development of insect tolerance, and improve the insect resistance of transgenic poplars, polygene polymerization is increasingly being applied to cultivate insect-resistant poplars. In the present study, we discuss polygene polymerization, applications of the polygene combination strategy, the current state of research on transgenic poplar with multiple insect-resistant genes, including existing problems, and future research directions. We provide reference data to aid the cultivation and utilization of new polygenic insect-resistant poplar varieties.

Keywords

• ecological security
• genetic transformation
• insect resistance
• polygene polymerization
• poplar
• unexpected effects