摘要
益母草、桔梗和白术３种药用植物种子均不耐贮藏，在收到种子后初始发芽率较低。益母草与桔梗种子萌发适温是２５±１℃，而白术种子为１５±１℃。在适温下，益母草、桔梗与白术种子的发芽率分别是６９．８％、３９．８％和４６．８％．在１５％ＲＨ下（硅胶密闭），种子贮藏较适宜，４３％ＲＨ下贮藏种子的发芽率次之。益母草种子宜在 １５℃中贮藏，桔梗种子则宜在 ５ ℃ 中贮藏，在 ５℃下７５％ＲＨ和４３％ＲＨ贮藏后的发芽率相近。用ＰＥＧ６０００引发处理桔梗种子可以明显地提高发芽率，但益母草种子则出现负效应。
Seeds of Chinese medicinal plants Leonurus artemisia (Lour.) S. Y Hu, Platycodon grandoforus (Jacq.) A DC. and Atractylodes macrocephala Koidz. were used as materials for germination test under various storage conditions. The optimal germination temperature for L. artemisia and P grandoflorus were 25℃1℃, and that for A. macrocepha;a was 15 1℃. At optimal temperature, seed germination percentages of L. artemisia (25℃), P. grandiflorus (25℃) and A. macrocephala (15℃) were 69.8%, 39.8% and 46.8%, respectively. 15% of relative humidity (RH) was the optimal storage condition, followed by 43% RH. 15 ℃ was the optimal temperature of seed storage for L. artemisia but 5 ℃ for P grandiflorus. The germination percentage of P grandiflorus seeds could be raised by PEG 6000 treatment, but contrary effect was observed in L. artemisia seeds.
出处
《热带亚热带植物学报》
CAS
CSCD
2000年第4期365-368,共4页
Journal of Tropical and Subtropical Botany
关键词
益母草
桔梗
白术
种子贮藏
萌发
发芽率
Leonurus artemisia
Platycodon grandiflorus, Atractylodes macrocephala
Seed storage
Germination, Polyethylene glycol
