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孔令普, 朱永杰, 邱梅, 王焕冲, 和兆荣. 理化因子对龙血树柴胡种子萌发的影响[J]. 植物科学学报, 2017, 35(3): 421-426. DOI: 10.11913/PSJ.2095-0837.2017.30421
引用本文: 孔令普, 朱永杰, 邱梅, 王焕冲, 和兆荣. 理化因子对龙血树柴胡种子萌发的影响[J]. 植物科学学报, 2017, 35(3): 421-426. DOI: 10.11913/PSJ.2095-0837.2017.30421
Kong Ling-Pu, Zhu Yong-Jie, Qiu Mei, Wang Huan-Chong, He Zhao-Rong. Effects of physical and chemical factors on seed germination of Bupleurum dracaenoides[J]. Plant Science Journal, 2017, 35(3): 421-426. DOI: 10.11913/PSJ.2095-0837.2017.30421
Citation: Kong Ling-Pu, Zhu Yong-Jie, Qiu Mei, Wang Huan-Chong, He Zhao-Rong. Effects of physical and chemical factors on seed germination of Bupleurum dracaenoides[J]. Plant Science Journal, 2017, 35(3): 421-426. DOI: 10.11913/PSJ.2095-0837.2017.30421

理化因子对龙血树柴胡种子萌发的影响

Effects of physical and chemical factors on seed germination of Bupleurum dracaenoides

  • 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KMnO4和3%的H2O2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。

     

    Abstract: 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 GA3 for 12 h at a temperature of 20℃.

     

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