【摘要】 从8个不同来源的3个马铃薯(Solanuntrberosum)品种(紫花白、晋薯七号和弗乌瑞它)的块茎中分离到240株内生细菌菌株,通过离体测定和温室实验,共得到55株对马铃薯环腐病菌(Clavibactermichiganencsubspsepedonicum)有拮抗作用的内生细菌,占总菌数的22.9%。初步筛选出3株具有促生和潜在防治马铃薯环腐病的内生细菌,分别为芽孢杆菌(Bacillussp.)A-10’、T3和荧光假单胞菌(Pseudomonasfluorescens)H1-6。其中A-10’菌株定殖、促生和拮抗作用兼备,具有很好的开发应用前景。更多还原

【Abstract】 Two hundred and forty bacterial strains were isolated from 3 potato (Solanun trberosum) cultivars of 8 different sources. On the basis of antagonistic bacteria examination in vitro, greenhouse and field tests, 55 endophytic and antagonistic bacteria occupied 22.9% of isolated bacteria were obtained. The 3 strains named as A-10’, T3 (Bacillus sp.) and H1-6 (Pseudomonas fluorescens ) were chosen for their suppression of bacterial ring rot (Clavibacter michiganenc subsp. sepedonicum) and their growth promotion. The strain A-10’was an endophytic bacterium with the effects of colonization, plant growth promotion and suppression of the pathogenic bacteria, showing good prospects for commercial use.更多还原