【摘要】 筛选挥发物及浸提液具有抑菌活性的作物,用于与三七轮作防治根腐病。采用菌丝生长速率法测定了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。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明显的抑制效果,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则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,有利于实现三七根腐病的生态防控。更多还原

【Abstract】 The purpose of this study was to screen crops which volatiles and extracts showing antifungal activity,and use them for rotation to control Panax notoginseng root rot.This study tested the inhibitory activity of 8 plant volatiles and extracts to Phytophthora cactorum and Fusarium solani,the casual agent of panax notoginseng root rot using mycelial growth rate method.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 was the strongest.The volatiles of Zingiber officinale,Houttuynia cordata,Coriandrum sativum and Mentha haplocalyx had little inhibition 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 distinct inhibitory activity to P.cactorum and F.solani.This data would provide scientific basis for using rotation of these crops to control Panax notoginseng root rot,achieving ecological control of Panax notoginseng root rot.更多还原