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| Inhibition Effects of Plant Extracts against Fusarium oxysporum |
| CAO Dong-xu1，XUE Guang-hou1，CUO Wen-ting1，LI Ying1，ZHANG Yu1，FU Lei1，YU Sheng-cheng2，FAN Hai-yan |
| 1College of Bioscience and Biotechnology，Shenyang Agricultural University，Shenyang 110866，Liaoning，China|2Logistics Department Agriculture and Avocation Base of Liaoning Provincial Corps of CPAP，Shenyang 110866，Liaoning，China |
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Abstract The fungistasis of 27 plant ethanol extracts were tested with Fusarium oxysporum f. sp. cucumerinum Owen，F. oxysporum f. sp. niveum and F. oxysporum f. sp. melonis under separate cultivating conditions．The effects of 4 plant extracts on potted plants against cucumber blight in greenhouse were tested，respectively．The extracts of the plants have obvious inhibitive function against the 3 kinds of pathogen，especially the extracts of Euphorbia fischeriana Steud，Chelidonium majus L.，Agastache rugosa，Cinnamomum cassia，Phellodendron amurense and Solanum nigrum have better resistance．Their inhibitory rate can be up to 70%．The potted test in vivo showed that the extract of E. fischeriana had 70.54% preventive effect and 57.89% curative effect．The extract of C. cassia had good preventive，curative and induced effects too，which can be up to 50%．The extract of A. rugosa had much better induced effect than its preventive and curative effect．The extract of P. amurense had 83.33% preventive effect and 55.56% induced effect，but its curative effect was not good enough.
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Received: 28 September 2011
Published: 14 December 2011
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