Inhibition Effects of Antagonist Stain B96-Ⅱ to Different Fusarium Wilt and Its Main Inhibiting Substance

doi:10.3321/j.issn:1000-7091.2006.04.025

Abstract

Abstract: A antagonistic strain of Bacillus sp(B96-II) against Fusarium wilt was isolated from compost extract.Further tests proved that the B96-II could effectively inhibit the development of 3 Fusarium wilts in cucumber,water melon,paprika,etc.The phenomena of conidia lysogenesis,conidia wall destruction,inhibition,and deformation of hyphal growth were observed.The inhibition rates of conidia germination of the above mentioned pathogens were 56.2%,57.3%,and 54.7%,and the inhibition rates of germination tube growth were 88.5%,87.5%,and 79.5%.Chitinase was detected as one of the main inhibiting substances.

Key words: Soil born disease, Fusarium oxysporum, Antagonist, Chitinase, Lysogenesis

CLC Number:

MA Li-ping, QIAO Xiong-wu, GAO Fen, HAO Bian-qing. Inhibition Effects of Antagonist Stain B96-Ⅱ to Different Fusarium Wilt and Its Main Inhibiting Substance[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2006, 21(4): 99-102. doi: 10.3321/j.issn:1000-7091.2006.04.025.

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