On Fungistasis of the Extracts from Helianthemum ordosicum for Pathogenic Germs of Plants

作者：Wenfang Gao · 发表于：Journal of Tianjin Normal University · 年份：2007 · 被引用次数：1 · 研究领域：Allelopathy and phytotoxic interactions、Plant Parasitism and Resistance、Plant Disease Resistance and Genetics

The bioactivitities of 6 kinds of different solvent extracts from Helianthemum ordosicum against Fusarium oxysporum,Verticillium dahliae V43-1,Alternaria kikuchiana and Penicillium expansum were studied in laboratory with growth rate method.The results showed that antibacterial activities of different extracts had remarkably significant difference.The ethyl acetate extracts had the strongest fungistasis for all 4 species of fungi,and the highest inhibition rate achieved 100% on both Verticillium dahliae V43-1 and Fusarium oxysporum,while the lowest achieved 74% on Alternaria kikuchiana.Secondly,the fungistasis of boiling water extracts was merely smaller than ethyl acetate extracts,which was greater than that of other extracts.The antibacterial activities of ethyl acetate extracts with different concentration on Verticillium dahliae V43-1 was the best and the MIC was about 5 g/L.