通过薯蓣黑痣病田间发病情况调查与症状观察,并对发病部位进行病原分离、培养和致病性测定,结果表明,薯蓣黑痣病的症状和病原菌形态特征与甘薯黑痣病基本相同。甘薯与薯蓣黑痣病病菌交互接种试验表明,它们之间能相互侵染,但薯蓣黑痣病病菌的致病力较甘薯黑痣病病菌弱,发病强度均较轻。 Investigation and incidence of symptoms was observed by a field yam mole disease, and disease site for pathogen isolation, culture and pathogenicity test results show that the symptoms of the disease and yam mole pathogen morphological characteristics and substantially the same sweet mole disease. Interaction between sweet potato and yam black spot disease virus pathogen inoculation tests showed that they can infect each other, but the pathogenicity of yam black mole disease pathogen than sweet potato mole disease, the incidence of light intensity are lighter.