【摘要】 通过圆盘滤膜试验 ,对扣培养试验 ,孢子萌发试验 ,菌丝间的相互作用观察 ,纤维素酶活力的测定以及对病害病情发展的影响等项研究 ,调查了土壤中分离的木霉和绿粘帚霉菌株对柑桔青霉病菌的拮抗作用。结果表明 :有 16 1%的黄绿木霉、 72 7%的钩状木霉、 69 2 %的绿粘帚霉的不挥发性代谢产物对柑桔青霉病菌菌丝生长的抑制作用超过了 60 % ;有 5 4 5 %的钩状木霉、 61 5 %的绿粘帚霉对其孢子萌发的抑制率大于 90 % ;木霉和绿粘帚霉产生的挥发性代谢产物对柑桔青霉病菌生长的抑制作用都小于 10 %。所试验的木霉和绿粘帚霉菌均不同程度地具有分解纤维素的能力。刺伤接种试验表明 ,木霉和绿粘帚霉对刺伤接种果实的病情发展具有明显的抑制作用。本试验结果表明 ,木霉和绿粘帚霉对柑桔青霉病菌的拮抗作用表现在抗生和竞争两方面更多还原

【Abstract】 The antagonism of Trichoderma spp. and Gliocladium virens isolates against Penicillinm italicum were studied with cellophane disk method,enclosed chamber test,conidial germination test,analysis of cellulase activites as well as biocontrol test against P italicum. The results indicated that Trichoderma spp. and G vivens had antibiosis and competition to p italicum. The strains could decompose cellulose in varying degrees,and Trichoderma spp. and G.virens can prevent the picked orange from rotting. T.hamatum and G virens ,especially G virens ,had strong antagonism against P italicum.更多还原