CAJ | 학술논문

香蕉枯萎病是由尖孢镰刀菌古巴专化型引起的,目前尚缺乏有效的防治方法,木霉菌是重要的植物病害防治菌,广泛分布于自然界.木霉菌具有广泛的适应性,能杀伤多种重要的植物病原菌且作用机制多种多样.笔者从广东湛江、海南儋州等地152份土样中分离出330株木霉,通过对峙法对木霉菌进行体外拮抗作用测定及评价,选出10株对尖孢镰刀菌有较好拮抗效果的木霉菌;并测定无菌土中木霉与病原菌的种群动态变化,结果表明木霉在土壤中对病原菌有一定的抑制作用.
향초고위병시유첨포렴도균고파전화형인기적,목전상결핍유효적방치방법,목매균시중요적식물병해방치균,엄범분포우자연계.목매균구유엄범적괄응성,능살상다충중요적식물병원균차작용궤제다충다양.필자종엄동담강、해남담주등지152빈토양중분리출330주목매,통과대치법대목매균진행체외길항작용측정급평개,선출10주대첨포렴도균유교호길항효과적목매균;병측정무균토중목매여병원균적충군동태변화,결과표명목매재토양중대병원균유일정적억제작용.
Banana fusarium wilt disease is a soil born disease caused by the pathogen Fusarium oxysporum f.sp.cubense Owen. At present, effective control methods for this disease are not available. The fungus Trichoderma, ubiquitous in the environment, is an important microorganism in the biological control of plant diseases. As a biocontrol agent, the advantages of Trichoderma spp. lie in its excellent adaptability, broad spectrum of activity and diversified mechanisms. A total of 330 strains of Trichoderma spp. were isolated from 152 soil samples collected from Zhanjiang, Hainan and other locations. Further screened by dual-culture and antagonistic test, 10 strains of the 330 strains were found to have strong antagonism against the pathogen of the disease. Observation of the dynamic population changes in Trichoderma spp. and the pathogen of the disease showed that Trichoderma spp. had some inhibitory effect on the pathogen of the disease in the soil.