The seed of both species has the characteristic of dormancy, with deeper dormancy in P. amurense Rupr.However, seed dormancy of both species could be broken by low temperature stratification.

• 秃叶黄皮树种子和黄檗种子具有休眠特性，且秃叶黄皮树种子的休眠较黄檗浅，经过低温层积后两种种子的萌发率都有所提高。