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通过分离接种鉴定,已知广西香蕉叶斑病的病原菌有香蕉暗双孢。芭蕉尾孢.簇生长蠕孢,香蕉链格孢和新月弯孢等5种.不同病原为害香蕉所引起的叶斑病症状也不相同.在广西蕉区以香蕉暗双孢引起的灰纹病为主,发生广,危害严重;芭蕉尾孢引起褐缘灰斑病为次;簇生长蠕孢为害香蕉引起的煤纹病发生少而且轻。链格孢和新月弯孢为害香蕉引起叶斑病国外极少报道,广西则发生广,但为害程度一般较轻,个别蕉园偶见链格孢菌引起严重的叶缘枯斑病.本文还对后两种病原菌的生物学特性作了报道.
By isolating the inoculation, it is known that the pathogen of banana leaf spot in Guangxi is dark spore of Banana. Cercospora crassa, spores cluster growth spores, Alternaria and Banana Crescent Curvularia 5. Different pathogenic damage caused by banana leaf spot disease symptoms are not the same .In Banana dark banana caused by the gray grain The disease is predominant, occurs widely and endanger the seriousness; Cercospora cordyceps is caused by Cercospora sojina; the occurrence of coal pattern caused by cluster spores is less and lighter than that caused by banana. Cervical spores and Crescent River spores damage caused by banana leaves leaf spot disease rarely reported abroad, Guangxi is widespread, but the degree of damage is generally mild, individual banana Park occasionally Alternaria caused severe leaf spot disease. The biological characteristics of the latter two pathogens have also been reported.