瓜栗病原真菌的鉴定

Identification of the Fungal Diseases in Pachira macrocarpa

鉴定了广州地区瓜栗 [Pachiramacrocarpa (Cham .et.Schlecht.)Walp .]上 8种病原真菌 ,即大果拟茎点霉 (Pho mopsismacrocarpaeP .G .Xi,Z .D .JiangetP .K .Chisp .nov .)、榴莲拟茎点霉 (PhomopsisdurionisH .Syd .)、可可球二孢 (BotryodiplodiatheobromaePat.)、胶孢刺盘孢 [Colletotrichumgloeosporioides (Penz.)Sacc .]、木止木拟盘多毛孢[Pestalotiopsisgracilis (Kleb .)Stey .]、粉红聚端孢 (TrichotheciumroseumLk .exFr.)、新月弯孢霉 [Curvularialunata(Walk .)Boed .]和细极链格孢 [Alternariatenuissima (Fr.)Wiltsh .],其中榴莲拟茎点霉引起的叶斑病和可可球二孢引起的茎枯病在生产上为害较重

Eight pathogen fungi in Pachira macrocarpa (Cham. et. Schlecht.) Walp. in Guangzhou were identified, which included Phomopsis macrocarpae P. G. Xi, Z. D. Jiang et P. K. Chi sp. nov., Phomopsis durionis H. Syd., Botryodiplodia theobromae Pat., Colletotrichum gloeosporioides (Penz.) Sacc., Pestalotiopsis gracilis (Kleb.) Stey., Trichothecium roseum Lk. ex Fr., Curvularia lunata (Walk.) Boed. and Alternaria tenuissima ( Fr.) Wiltsh.. The description in Latin and figure of the new species were given in the paper. The type specimens are deposited in the Fungal Collection of South China Agricultural University. Two diseases of them, leaf spot by Phomopsis durionis and stem rot by Botryodiplodia theobromae , occurred widely and severely.