化感植物向日葵根提取液的抑菌活性研究

利用生长速率法研究了向日葵根乙醇提取物的3种不同溶剂可溶部分对6种植物病原菌的抑制作用。试验结果表明，3种萃取物对6种植物病原菌均有不同程度的抑制作用。化学成分预试表明，向日葵根中含有黄酮类、萜类、内酯类、蒽醌类、有机酸等代谢产物。

Study on antimicrobial assay of root extract of allelopathic Helianthus annuus

In the present study,inhibition of three different polar solvent parts against six phytopathogenic fungi from the ethanol extract of the root of Helianthus annuus L. was studied by growth rate method. The result showed that three extracts had some inhibitory effects against these plant pathogenic fungi. The preliminary chemical pre-test also proved the root of this plant can contain secondary metabolites such as flavonoids, terpenoids,lacton,anthraquinones, and organic acids.