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Plant Diversity ›› 2012, Vol. 34 ›› Issue (4): 391-.DOI: 10.3724/SP.J.1143.2012.11172

• 研究论文 • 上一篇    下一篇

人参皂苷对4种栽培作物早期根系发育的化感效应

 张秋菊1、2, 张爱华1, 杨鹤1, 张连学1   

  1. 1 吉林农业大学中药材学院,吉林 长春130118;2 通化师范学院生物系,吉林 通化134001
  • 收稿日期:2012-04-05 出版日期:2012-08-25 发布日期:2012-05-16

Allelopathic Effects of Ginsenosides from Panax ginseng on the Root Development of Four Cultivar Plants in Their Early Growth Stages

 ZHANG  Qiu-Ju-1、2, ZHANG  Ai-Hua-1, YANG  He-1, ZHANG  Lian-Xue-1   

  1. 1 College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China;
    2 Department of Biology, Tonghua Normal University, Tonghua 134001, China
  • Received:2012-04-05 Online:2012-08-25 Published:2012-05-16

摘要:

人参、西洋参能通过根系分泌三萜皂苷等化感物质,严重影响后茬人参的生长,但对人参以外的植物是否具有化感效应尚不清楚。本实验研究了不同质量浓度的人参皂苷对小麦、白菜、黄瓜及绿豆4种常见栽培作物早期根系发育的影响,结果发现人参皂苷处理液(25、50和100mg·L-1)对4种作物主根及不定根的发育影响不尽相同。随着处理质量浓度的升高,小麦、白菜、黄瓜根系活力分别比同组CK明显降低,根长、根鲜重也呈降低趋势。各浓度人参皂苷处理对黄瓜和绿豆下胚轴不定根的数量、根长、根鲜重及根系活力的影响均未达到显著水平,但二者抗氧化酶的活性都微有升高。总之,人参皂苷对4种栽培作物的主根发育均有抑制作用,尤其对小麦、黄瓜主根生长的抑制作用较强;但对黄瓜和绿豆不定根发育的影响不明显。

关键词: 人参皂苷, 根系, 发育, 下胚轴, 不定根, 化感效应

Abstract:

Some allelochemicals, including ginsenosides secreted from the roots of ginseng and American ginseng, have been considered to play a regulatory role in population regeneration. This study was conducted to investigate the allelopathic effects of ginsenosides on the root development of several cultivar plants at the early growth stage. The different inhibitions in wheat, cabbage, and cucumber roots resulting from ginsenosides treatment at different concentrations were observed. The root vigor of the three receptor plants constantly decreased compared with the control when the treatment concentration increased; the root length and root fresh weight exhibited similar trends. However, ginsenoside treatment showed negligible effect on the hypocotyl adventitious roots of cucumber and mung bean. The root number, root length, root fresh weight, and root vigor showed no significant changes; however, the antioxidant enzyme activities were slightly enhanced compared with that of the control. These results indicate that the ginsenosides inhibited the root growth of all indicator plants, and these inhibitory effects were stronger on wheat and cucumber than on cabbage. However, no evidence indicates that ginsenosides inhibited the growth of hypocotyl cuttings of cucumber and mung bean.

Key words: Ginsenosides, Root, Development, Hypocotyls, Adventitious roots, Allelopathic effect

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