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| Antagonistic Effects of Endophytic Bacteria Strain Mg15 on Fusarium oxysporum f. sp. niveum in Watermelon |
| DU Li-li，MA Hong-yan，WANG Xue-zheng，LUAN Fei-shi* |
| Horticulture College，Northeast Agricultural University，Harbin 150030，Heilongjiang，China |
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Abstract 17 strains of Endophytic bacteria were isolated from roots of healthy melon（MR-1）and 4 strains（Mg2，Mg9，Mg15，Mg16）of bacteria demonstrated antagonistic to Fusarium wilt by confrontation culture．According to the test on hyphae growing speed，Mg15 was found to have better inhibitation（77.09 %）to Fusarium wilt and even could cause deformation of Fusarium wilt．Besides，the bacteria fermentation broth with different concentration could also bring inhibition to germination of Fusarium wilt spores．There was only 7.86 % spore germination using the original fermentation broth，with little effect on budding of watermelon seeds.
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Received: 17 November 2009
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Corresponding Authors:
LUAN Fei-shi
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