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草业学报 ›› 2020, Vol. 29 ›› Issue (9): 169-178.DOI: 10.11686/cyxb2019533

• 研究论文 • 上一篇    下一篇

假苍耳不同部位水浸提液对5种土著植物化感作用的研究

李凤兰1, 武佳文1, 姚树宽2, 赵梓颐1, 赵潇璨1, 贺付蒙1, 朱元芳1, 石奇海1, 周磊1, 徐永清1,*   

  1. 1.东北农业大学生命科学学院,黑龙江 哈尔滨 150030;
    2.汤原县农业农村局,黑龙江 佳木斯 154700
  • 收稿日期:2019-12-04 修回日期:2020-02-13 出版日期:2020-09-20 发布日期:2020-09-20
  • 通讯作者: E-mail: 77213176@qq.com
  • 作者简介:李凤兰(1973-),女,黑龙江哈尔滨人,副教授,博士。E-mail: lflan715@163.com
  • 基金资助:
    国家自然基金青年科学基金项目(31201470),哈尔滨市应用科技研究与开发项目(2015RAQXJ021)和国家科技部科技基础性工作专项(2014FY111000)资助

A study of the allelopathic effect of extracts from different parts of Iva xanthiifolia on five native species

LI Feng-lan1, WU Jia-wen1, YAO Shu-kuan2, ZHAO Zi-yi1, ZHAO Xiao-can1, HE Fu-meng1, ZHU Yuan-fang1, SHI Qi-hai1, ZHOU Lei1, XU Yong-qing1,*   

  1. 1. College of Life Science, Northeast Agricultural University, Harbin 150030, China;
    2. Agricultural and Rural Bureau of Tangyuan County, Jiamusi 154700, China
  • Received:2019-12-04 Revised:2020-02-13 Online:2020-09-20 Published:2020-09-20

摘要: 为探究外来植物假苍耳对土著植物种子萌发和幼苗生长是否存在化感作用,分别利用其水浸提液处理5种土著植物种子。结果显示,假苍耳不同部位浸提液存在不同程度化感作用,且其不同部位化感作用强度不同,叶浸提液抑制作用最强。从叶中分离出的3种组分中中性组分化感效应强于酸性和碱性组分。不同的土著植物对假苍耳同一部位浸提液敏感程度也不同,狗尾草和苋种子萌发对假苍耳不同部位浸提液均表现敏感,大籽蒿、藜、稗对假苍耳不同部位浸提液则表现出低促高抑的趋势。

关键词: 化感作用, 种子萌发, 幼苗生长, 低促高抑

Abstract: This research explored the allelopathic effects of extracts of the exotic plant Iva xanthiifolia on seed germination and seedling growth of native plants. Seeds of five native plant species were treated with water extracts of the plant. The extracts from different parts of I. xanthiifolia had different allelopathic effects, with the suppression effect of leaf extract being the strongest. Among the acid, alkaline and neutral components isolated from leaves, the allelopathic effect of the neutral group was stronger than that of the acid and alkaline components. The sensitivity of different native plants treated with the same extract of I. xanthiifolia was also different. The seed germination and seedling growth of Setaria viridis and Amaranthus tricolor were sensitive to the extracts from different parts of I. xanthiifolia. Low concentration of the extract promoted the growth of Artemisia sieversiana, Echinochloa crusgalli and Chenopodium album, while a high concentration of the extract inhibited the growth of the same three species.

Key words: allelopathy, seed germination, seedling growth, low promotes high suppression