论文部分内容阅读
目的:探索牛蒡根际镰刀菌与牛蒡之间的相互关系。方法:从全国30个地区采集牛蒡根际土壤样品,进行了根际土壤真菌数量和群落的生态学研究,测定镰刀菌发酵液对牛蒡幼苗和牛蒡子萌发的影响,并对其中毒性最强的两株镰刀菌F130和F131进行了形态学和分子生物学的鉴定。结果:镰刀菌为牛蒡根际的最优势类群,贡献率为34.297%,其次为木霉,贡献率为22.519%;绝大多数镰刀菌对牛蒡有明显的毒性作用,其中F130和F131被鉴定为Fusarium solani。结论:Fusarium solani是牛蒡根际土壤中的致害菌。
Objective: To explore the relationship between Burdock rhizosphere and Burdock. Methods: Rhizosphere soil samples of Burdock were collected from 30 areas of China. The quantity of fungi in the rhizosphere soil and community ecology were studied. The effects of Fusarium oxysporum broth on the germination of burdock seedlings and Arctium lappa L. were studied. The most toxic Two Fusarium F130 and F131 were morphologically and molecularly identified. Results: Fusarium was the dominant group in the rhizosphere of Burdock, with a contribution rate of 34.297%, followed by Trichoderma, with a contribution rate of 22.519%. Most of the Fusarium strains had significant toxic effects on Burdock. F130 and F131 were identified as Fusarium solani. Conclusion: Fusarium solani is a harmful bacterium in rhizosphere soil of burdock.