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中国农学通报 ›› 2015, Vol. 31 ›› Issue (31): 177-180.doi: 10.11924/j.issn.1000-6850.casb15010201

• 林学 园艺 园林 • 上一篇    下一篇

高山龙胆种子萌发特性研究

孙 阎,李鑫鑫,赵立波,吕 军   

  1. 黑龙江大学农业资源与环境学院,黑龙江大学中俄学院,黑龙江大学农业资源与环境学院,黑龙江大学农业资源与环境学院
  • 收稿日期:2015-01-27 修回日期:2015-10-10 接受日期:2015-08-25 出版日期:2015-11-16 发布日期:2015-11-16
  • 通讯作者: 吕 军
  • 基金资助:
    国家自然科学基金资助项目“龙胆属不同生态类型植物早期营养发育及生态演化意义研究”(31200146)。

Study on Seed Germination Characters of Gentiana algida

  • Received:2015-01-27 Revised:2015-10-10 Accepted:2015-08-25 Online:2015-11-16 Published:2015-11-16

摘要: 为了解高山龙胆种子萌发的适宜条件,[方法]研究了不同温度、不同光照条件和不同赤霉素浓度处理对种子萌发的影响。研究结果表明,不同温度对高山龙胆种子的发芽率影响明显,低温(5 ℃)和高温(35 ℃)严重抑制种子萌发,25 ℃是高山龙胆种子萌发的最理想温度,发芽率达到68.9%。光照条件对高山龙胆种子萌发具有显著的影响,黑暗条件不利于种子萌发。赤霉素处理对高山龙胆种子的发芽势和发芽率均有促进作用,但过高的浓度会阻碍种子萌发,以300-400 mg/L的赤霉素处理种子最为适宜,发芽率可达85%以上。 [结论]因此,高山龙胆种子发芽最适温度为25 ℃,且种子需光萌发,300-400 mg/L的赤霉素处理可以明显提高种子发芽率。

关键词: 免耕, 免耕, 固碳, 秸秆还田, 土壤有机质

Abstract: In order to explore the optimal conditions of seed germination of Gentiana algida, the influence of seed germination by the different temperatures, the different light conditions and the different concentrations of GA3 treatments were studied. The results showed the seed germination rates were significantly influenced by different temperatures, as both low (5℃) and high (35℃) temperatures severely inhibited the seed germination. 25℃ was the most suitable temperature, the germination rate was 68.9%. Light condition was significant effect on the seed germination, because the dark condition was inconducive to the germination. The GA3 treatment improved the germination potential and the germination rate, but higher GA3 concentration treatment inhibited the seed germination. The 300-400 mg/L concentration of GA3 was the best treatment, and the germination rate reached above 85%. Therefore, the optimum temperature of the seed germination of G. algida was 25℃, light was also required in the process, and the 300-400 mg/L concentration of GA3 treatment increased the seed germination rate significantly.

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