大多数温带多年生木本植物芽的休眠解除都需要低温处理。Perry 等(1971)指出,对低温的需求主要局限于芽,在解除休眠时,与根产生的激素特别是细胞分裂素和赤霉素有关,但根系在解除休眠中的作用还不清楚。对木质部渗出液所作的研究表明,根际环境的变化能改变根系激素的产生和运 Most temperate perennial woody bud dormancy release need low temperature treatment. Perry et al. (1971) pointed out that the demand for low temperature is mainly limited to buds, and when released from dormancy, it is related to the hormones produced by the roots, especially cytokinins and gibberellins, but the role of the root in the dormancy is unclear. Studies on xylem exudates have shown that changes in the rhizosphere environment can alter the production and transport of root hormones