Abstract:

The pathogen causing sesame wilt was collected from the main sesame production areas, including Hubei Province, Henan Province, Anhui Province, Jiangxi Province and Liaoning Province, and 25 strains were isolated finally, also attempted to develop a mature method about isolating, purifying and conserving the sesame wilt pathogen. Based on the direct observation of the phenotypes and sequencing of the rDNA-ITS region by the universal primers ITS1 and ITS4, most of the pathogens were confirmed to be Fusarium oxysporum, a little of the pathogens belonged to the Fusarium oxysporum. This study firstly showed systematic evidences that: Fusarium oxysporum causing sesame wilt in China, and many differences were also detected among these strains in morphology and pathogenicity. The results may be helpful for controlling the Fusarium oxysporum infecting sesame.