Comparative Study on Antibacterial Effect About Plant Extracts of Six Species of Artemisia L. Plants

Taking the ethanol extracts of six species(Artemisia annua,Artemisia argyi,Artemisia capillaries,Artemisia sieversiana,Artemisia mongolica Fisch.et Bes,Artemisia sylvatica)of Artemisia L.plants as experimental materials.Filter paper dispersion method and the liquid suspension culture method were used to determine antibacterial effect and the minimum inhibitory concentrations(MIC)of the ethanol extracts of six species of Artemisia L.plants on Pseudomonas syringae,A.tumefaciens,Clavibacter michiganensis subsp.sepedonicus.The results showed that the ethanol extracts of six species of Artemisia L.plants had certain bacteriostatic activity on the tested bacteria.Testing of bacteriostasis showed that the strongest bacteriostasis was the plant extracts of Artemisia argyi followed by Artemisia annua.The MIC of ethanol extracts from different plants showed significant difference.