8种植物挥发物和浸提液对三七根腐病菌的抑制活性研究

试验测定了8种植物的挥发物和浸提液对引起三七根腐病的恶疫霉菌和腐皮镰孢菌的抑制活性。结果显示，葱属作物大蒜、洋葱、葱及韭菜的挥发物和浸提液对恶疫霉菌和腐皮镰孢菌均具有显著的抑制效果，且大蒜挥发物和浸提液的抑菌活性最强；生姜、鱼腥草、香菜茎和薄荷的挥发物抑菌效果不明显，甚至在低浓度下出现促进菌丝生长的现象，而生姜、香菜根和叶的浸提液对恶疫霉菌和腐皮镰刀菌表现出明显的抑菌活性。本研究结果可为利用作物轮作控制三七根腐病提供科学依据。

Inhibitory activity of eight plant volatiles and extracts to Panax notoginseng root rot pathogens

This study tested the inhibitory activity of eight plant volatiles and extracts to Phytophthora cactorum and Fusarium solani, the casual agent of panax notoginseng root rot. The results revealed that the volatiles and extracts of Allium sativum, A. epa, A. tuberosum, A. fistulosum showed obvious inhibition activity against P. cactorum and F. solani and the inhibition activity of A. sativum is the strongest. The volatiles of Zingiber officinale, Houttuynia cordata, Coriandrum sativum and Mentha haplocalyx had little inhibiton activity on P. cactorum and F. solani, sometimes accelerated colony growth when treated with low concentration. However, the extracts of Z. officinale, the root and leaf of C. sativum showed obvious inhibitory activity to P. cactorum and F. solani. This data would provide scientific basis for using the rotation of these crops rotation to control Panax notoginseng root rot.