摘要
本研究以龙血树柴胡(Bupleurum dracaenoides Huan C.Wang,Z.R.He&H.Sun)的种子为材料,采用不同温度、不同浓度赤霉素、不同化学试剂以及紫外线照射和微波辐射等方式处理后,统计其发芽率、发芽势、发芽指数和发芽时间等指标。结果表明:龙血树柴胡种子萌发最适温度为20℃;100 mg/L的GA3、0.5%的KMn O4和3%的H_2O_2处理均能促进其种子萌发,但不能使种子萌发和出苗时间提前;25 s微波辐射处理可大幅提高种子发芽率;紫外线照射处理种子0.5 h,萌发效果最佳,但随照射时间的延长对种子萌发则有不同程度的抑制。
In this paper, the effects of different treatments on Bupleurum dracaenoides Huan C. Wang, Z. R. He ＆ H. Sun seed germination were studied. Results showed that the optimum germination temperature for B. dracaenoides was 20℃. Treatment with 100 mg/L of GA3, 0.5% KMnO4, and 3% H2O2 improved seed germination, but did not advance seed germination and emergence time. Microwave radiation significantly improved the seed germination rate, with 25 s found to be the optimal radiation time. The most effective ultraviolet radiation treatment time for seed germination was 0.5 h, with a germination rate of 81%. When the ultraviolet radiation time was gradually increased, the germination potential of seeds was inhibited to different degrees. Thus, optimal treatment to maximize B. dracaenoides seed germination was to soak seeds in 100 mg/L of GAs for 12 h at a temperature of 20℃.
出处
《植物科学学报》
CAS
CSCD
北大核心
2017年第3期421-426,共6页
Plant Science Journal
基金
国家自然科学基金项目(31560096)~~
关键词
龙血树柴胡
种子
萌发
Bupleurum dracaenoides
Seeds
Germination
