镰刀菌酸是枯萎病菌产生的一种非寄主特异性致病毒素。β 葡萄糖苷酶在枯萎病病程中起着降解细胞壁纤维素破坏植物细胞组织的作用。为了探索西瓜枯萎病菌的镰刀菌酸产量和β 1,4 葡萄糖苷酶活性与致病力的关系 ,本试验测定了 2 8个采自新疆的菌株 ,发现其镰刀菌酸的产量极不稳定 ,且与致病力强弱无关 ,而 β 1,4葡萄糖苷酶活性与致病力存在显著相关性 Fusaric acid is a non-host-specific toxoid produced by Fusarium oxysporum. β-glucosidase plays a role in degrading plant cell tissue of cell wall in the process of wilt disease. In order to explore Fusarium oxysporum fusarium oxysporum yield and β 1,4 glucosidase activity and pathogenicity of Fusarium oxysporum f. And has nothing to do with the virulence of pathogenicity, while β 1,4 glucosidase activity has significant correlation with pathogenicity