关键词: 泡桐, 顶芽死亡, 机制

Abstract: The terminal buds of young Paulownia spp. are predisposed to dead over winter. Thus, a false dichotomous branch is the main trunk extension form in the following year, which brings about "big crown-low trunk" and seriously affects the productivity and wood quality. It is important in both theory and application to understand the death reasons and mechanisms. The possible death reasons and mechanisms were reviewed in this paper, and the emphases were put on the factors that the terminal bud growth and development status, temperature, water, light, programmed cell death and endogenous hormonal changes associated with the terminal bud death.Finally, certain urgent problems about Paulownia spp. terminal bud death are put forward and discussed.

Key words: Paulownia spp, terminal bud death, mechanism