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生态学杂志 ›› 2004, Vol. ›› Issue (2): 50-54.

• 研究报告 • 上一篇    下一篇

大籽蒿花中生物碱类化感物质对羊草根茎节器官分化的影响

李新宇1, 朴顺姬2, 唐海萍1, 吴梅花2   

  1. 1. 北京师范大学资源科学研究所, 北京, 100875;
    2. 内蒙古大学生态与环境科学系内蒙古草地生态学重点实验室, 呼和浩特, 010021
  • 收稿日期:2002-10-24 修回日期:2002-12-10 出版日期:2004-04-10
  • 通讯作者: 李新宇,女,1979年生,在读硕士,2001年毕业于内蒙古大学生态与环境科学系,现主要从事全球变化与陆地生态系统研究.
  • 基金资助:
    中国科学院锡林郭勒草原定位站研究开发站基金资助(9823);国家杰出青年自然科学基金资助项目(3910027)

Effect of alkaloid from Artemisia sieversiana flower on the apparatus division of rhizome knot of Leymus chinensis

LI Xinyu1, PIAO Shunji2, TANG Haiping1, WU Meihua2   

  1. 1. Institute of Resources Science, Beijing Normal University, Beijing 100875, China;
    2. Department of Ecology and Environmental Science Inner Mongolia University, Huhhot 010021, China
  • Received:2002-10-24 Revised:2002-12-10 Online:2004-04-10

摘要: 通过观察大籽蒿花提取物中生物碱物质对羊草根茎节部的影响,从细胞水平分析研究了它们之间的化感作用机制。结果表明,在有生物碱类物质存在时,与对照相比较,无论是羊草不定根的形成个数,还是从髓射线部位形成的突起物的个数,随浓度升高,存在一个先增加后降低的趋势。在浓度1%下,影响不大;在5%和10%下,有增加的趋势;但随着浓度的增加,在浓度20%下,有减少的趋势。羊草根茎节部不定芽的形成个数受生物碱类物质的影响很小。

Abstract: Rhizome knots of Leymus chinensis were cultured in 4 different concentration solutions of alkaloid from the flowers of Artemsia sieversiana and under a control condition. Cell division and apparatus development on the rhizome were observed with microscope. Allelopathic effect of A. sieversiana on development of L. chinensis was studied . The results showed that:compared to control, the extracts at 1% had weak effects on the germination numbers of roots and germination from pith ray, while the extracts at 5% or 10% could stimulate their germination. However , with the concentration increase, it restricted their germination.The extract had weak effects on the germination of the bud. Compared to control , the number of bud germination at 1%, 5%, 10% and 20% concentration had no obvious difference.

Key words: Huangpu District of Guangzhou City, Nycticorax nyctiorax, Ardeola bacchus, Mercury, Distribution pattern

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