[目的]研究9种药用植物粗提物对3种植物病原真菌的抑菌活性.[方法]采用生长速率法测定了采自西双版纳热带植物园的9种药用植物丙酮粗提物对茄链格孢菌(Alternaria solani)、腐皮镰刀菌(Fusarium solani)和香蕉炭疽菌(Colletotrichum musae)的抑菌活性.[结果]在不同的植物样品浓度(0.100、0.010和0.005g/ml)下,9种药用植物丙酮粗提物对3种供试植物病原真菌的菌丝生长均表现出一定的抑制活性,抑菌率在3.5％ ～87.0％.[结论]凤仙花(Imps halsamina)对3种植物病真菌菌的抑菌率为12.8％～87.0％,穿心莲(Andrographis paniculata)则为40.0％ -69.8％,二者具有进一步研究和开发的价值.%[Objective] The aim was to study the antifungal activities of extracts from 9 medicinal plants on 3 phytopathogenio fungi. [ Method] The antifungal activilies of extracts from 9 medicinal plants in Xishuangbanna tropical botanical garden on Alternaria solani, Fusarium salani, and Colleiotrichum musae were determined by growth rate methods. [ Result] The results indicated that acetone extracts with different concentration (0. 100,0.010 and 0.005 g/ml) from the 9 medicinal plants showed inhibition activities on the mycelia growth of 3 sampled phytopalhogenic fungi, and the inhibition rate were from 3.5% to 87.0%. [Conclusion] The inhibition rates of Impatient balsamina on 3 fungi were from 12.8% to 87.0% ,and from 400% to 69.8% of Andrograpkis paniculata. The I. balsanuna and A. paniculata had values for further research and development.
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