Abstract: The pathogen from the root tissue of Hippeastrum rutilum was isolated by tissue isolation method, and the pathogen was identified by morphological observation and ITS sequence analysis. The results showed that the colony of the pathogen was round, the hyphae were white villous at first, and gradually changed to light yellow with time, and the conidia of the pathogen strain had two forms, the large conidia were straight or slightly curved into sickle shape, there were more transverse septum, and the small conidia were oval or oval with 1~2 transverse septum. The pathogen was identified as Fusarium solani by morphology, pathogenicity determination and ITS sequence analysis.

Key words: Hippeastrum rutilum, Fusarium solani, isolation, identification