三叶鬼针草水抽提物他感作用与降雨量的关系

    RELATIONSHIP BETWEEN ALLELOPATHIC EFFECTS OF Bidens pilosa AQUEOUS EXTRACTS AND RAINFALL

    • 摘要: 测定一年中不同月份采集的三叶鬼针草叶片的水抽提物对萝卜、水稻、黄瓜3种植物种子萌发和幼苗生长的影响。结果表明,不同时间三叶鬼针草水抽提物的他感作用有显著差异,不同月份水抽提物对3种受体幼苗根生长的抑制与采集抽提材料前一个月的降雨量有显著的负相关关系,降雨量少,抑制作用强;降雨量多,抑制作用弱。

       

      Abstract: The allelopathic effects of Bidens pilosa aqueous extracts in different months within ayear on seed germination and seedling growth of radish,rice and cucumber weretested.The studies indicated that allelopathic effects of Bidens pilosa aqueous extractsin different months on seedling growth of the three receptor plants,were variable. such change exhibited significant negative correlation with the monthly rainfall beforethe harvest of plant materials.When rainfall of the previous month was high,theinhibitory effects was weak.When the rainfall was low,the inhibitory effect was strong.

       

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