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草业学报 ›› 2010, Vol. 19 ›› Issue (6): 114-119.

• 研究论文 • 上一篇    下一篇

艾蒿对不同植物幼苗的化感作用初探

李美1,高兴祥1,高宗军1,王清2   

  1. 1.山东省农业科学院植物保护研究所,山东 济南 250100;
    2.日照市东港区涛雒镇林业站,山东 日照 276805
  • 收稿日期:2009-12-31 出版日期:2010-06-25 发布日期:2010-12-20
  • 作者简介::李美(1972-),女,山东济南人,副研究员,硕士。E-mail:limei9909@163.com
  • 基金资助:
    国家863计划项目(2006AA10A214)和国家“十一五”科技支持重大项目(2006BAD08A09)资助

A primary study on allelopathy of Artemisia vulgaris

LI Mei1, GAO Xing-xiang1, GAO Zong-jun1, WANG Qing2   

  1. 1.Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Ji’nan 250100, China;

    2.Forestry Station of Taoluo Town Donggang District in Rizhao, Rizhao 276805, China
  • Received:2009-12-31 Online:2010-06-25 Published:2010-12-20

摘要: 在室内用离体生物测定方法测定了艾蒿水浸提物对黄瓜、油菜、高粱、萝卜和小麦种子萌发和幼苗生长的影响,并同时测定了黄瓜和萝卜幼苗丙二醛(MDA)含量的变化。结果表明,艾蒿水浸提液对5种植物种子的萌发和幼苗生长均有较强的抑制作用,5种受体植物中,以油菜最为敏感,其次为萝卜。0.025g/mL浓度的艾蒿水提液对5种受体油菜、萝卜、黄瓜、小麦和高粱种子的综合效应(SE)分别为100%,87.26%,69.88%,61.11%和52.77%。艾蒿水提物能引起黄瓜和萝卜幼苗MDA含量的升高,表明艾蒿化感作用对受体植物的影响很可能与其引起MDA含量升高,从而导致植物细胞膜的破坏有关。

Abstract: Allelopathy is the positive or negative effects of chemicals released by one plant on the growth or reproduction of others. Chemicals extracted from plant roots or shoots directly inhibit or stimulate the germination, growth, and development of other plants. Allelochemicals also indirectly affect the other plants through the inhibition of microorganisms. Allelopathy exists widely in nature and plays a vital role in crop production systems and pest (insects, nematodes, pathogens and weeds) management. The allelopathic effects of Artemisia vulgaris on the seed germination and growth of crops Triticum aestivum (wheat), Sorghum vulgare (sorghum), Cucumis sativus (cucumber), Brassica campestris (rape) and Raphanus sativus (radish) were studied, and its effects on MDA content were also studied to determine the allelopathic mechanism. The allelopathy of aqueous extract from A. vulgaris was tested in petri dishes. It strongly inhibited the germination, germination speed and seedling growth of tested crops. Rape and radish were more sensitive than other species. The synthesis effects of rape, radish, cucumber, wheat and sorghum were 100%, 87.26%, 69.88%, 61.11% and 52.77% respectively at a concentration of 0.012 5 g/mL. The MDA contents of cucumber and radish increased markedly after treatment. The results indicated that the allelopathic effect of A. vulgaris could break cell membranes by promoting MDA.

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