摘要
从不同作物根际土壤中分离得到微生物菌株1223株。以香蕉叶斑病5种病原菌为靶标进行的拮抗菌筛选结果显示,香蕉尾孢的拮抗菌检出率(39.3%)最低。在以香蕉尾孢为指示菌的筛选中发现,放线菌中拮抗性菌株的出现率(33.3%)明显高于细菌(14.9%),不同类别作物中以香蕉根围拮抗性菌株的出现率(23.3%)最高。筛选到的拮抗细菌B106菌株和拮抗放线菌St1607菌株连续移植6次,对香蕉尾孢的抑菌力均保持稳定。2株拮抗菌除对香蕉叶斑病菌具较高抑菌活性外,对其余11种植物病原菌均表现不同程度的抑制效果。
Totally 1223 strains were isolated from different crops rhizosphere. The antagonistic abilities of all the isolated strains against 5 pathogens （ Cercospora musae,Cordana musae,Helminthosporium torulosa,Alternaria musae,Curvulria lunata） of banana leaf spot diseases were tested on PDA plates. The result showed that the occurrence frequency （39.3 % ） of antagonistic strains against C. musae was lowermost. The percentage of the strains with suppressive ability against C. musae in actinomyeete group was higher than that in bacterium group. The occurrence frequency （23.3 % ） of antagonistic strains from banana rhizosphere was higher than that from other crops. No significant change in suppressive ability of strains B106 and St1607 was detected during 6 times continuous transfers on artificial medium. A broad suppressive spectrum of the two antagonists against uther plant pathogens was confirmed.
出处
《西南农业学报》
CSCD
2007年第3期421-424,共4页
Southwest China Journal of Agricultural Sciences
基金
广西农业科学院科技发展基金(2005006)
关键词
香蕉叶斑病
香蕉尾孢
拮抗微生物
筛选
banana leaf spot disease
Cercospora musae
antagonistic microorganism
screening
