香龙血树真菌病害的鉴定

Identification of the Fungal Diseases on Dracaena fragrans

1997～ 2 0 0 0年在广州地区的香龙血树 [Dracaenafragrans(L .)Ker Gaw .]种植单位共调查到 9种真菌病害 ,即 :可可球二孢茎枯病、顶多毛孢叶斑病、弯孢霉灰斑病、弯孢霉褐斑病、炭疽病、拟盘多毛孢叶斑病、拟茎点霉灰斑病、拟茎点霉叶斑病和球壳孢叶枯病 ,其病原菌分别被鉴定为 :可可球二孢 (BotryodiplodiatheobromaePat.)、龙血树顶多毛孢 (BartaliniadracaenaeaP .G .Xi,Z .D .JiangetP .K .Chi )、弯孢霉 [Curvularialunata (Walker)Boedijn]、塞河弯孢霉 [Curvulariasenegalensis (Speg.)Subram .]、围小丛壳 [Glomerellacingulata (Stonem .)Spauld .etSchrenk]、棒孢拟盘多毛孢 [Pestalotiopsisclavispora (Atk .)Stey .]、龙血树拟茎点霉 (PhomopsisdracaenaeSahni)、龙血树生拟茎点霉 (Phomop sisdracaenicolaZ .D .Jiang ,P .G .XietP .K .Chi)、龙血树球壳孢 (SphaeropsisdracaenaeP .G .XietP .K .Chi ) 。

Nine kinds of fungal diseases bark rot,anthracnose, and seven kinds of leaf spots on Dracaena fragrans (L.) Ker Gawl. in Guangzhou region were investigated and identified in 1997 to 2000. The pathogens were Botryodiplodia theobromae Pat., Bartalinia dracaenaea P.G.Xi, Z.D.Jiang et P.K.Chi, Curvularia lunata (Walker)Boedijn, Curvularia senegalensis (Speg.) Subram., Glomerella cingulata (Stonem.) Spauld. et Schrenk, Pestalotiopsis clavispora (Atk.) Stey., Phomopsis dracaenae Sahni ,Phomopsis dracaenicola Z.D.Jiang, P.G.Xi et P.K.Chi, Sphaeropsis dracaenae P.G.Xi et P.K.Chi . Two severe diseases in the plantations of Dracaena fragrans were bark rot caused by B. theobromae and anthracnose caused by G. cingulata .