Abstract: Paeonia ostii ‘Feng Dan’ is rare and valuable treasure of peonies, its medicinal value ranks the top among the four famous Chinese medicine.However, the cultivation of P.ostii ‘Feng Dan’ has been limited due to high level of seed dormancy.In the study, the effects of different treatments (AgNO₃, GA₃, KT, TDZ and 4℃) on seed dominancy were studied.The results showed that the treatments of AgNO₃, GA₃ and 4℃ accelerated germination, produced high germination rate and improved the growth (fresh weight, seedling length and root development etc.) of P.ostii ‘Feng Dan’ seedling compared with the control to some extent.

Key words: Paeonia ostii, germination, AgNO₃, GA₃, KT, TDZ, 4℃

摘要： 凤丹种子具有很深的休眠特性。本实验以AgNO₃、GA₃、KT、TDZ和4℃低温处理凤丹种子,探讨解除其上胚轴休眠的途径。结果表明,AgNO₃、GA₃和低温(4℃)处理能加快凤丹种子萌发并提高发芽率,且不同程度地改善幼苗的鲜重、株高、根系等生长指标。

关键词: 凤丹, 种子萌发, AgNO₃, GA₃, KT, TDZ, 4℃