芦笋茎枯病菌的生物学特性  

BIOLOGICAL CHARACTERS OF PHOMOPSIS ASPARAGl (SACC. ) BUBAK

作　　者：刘克均[1] 陆悦健[1] 陈永萱[1] 李式军[1] 

机构地区：[1]南京农业大学,南京210095

出　　处：《植物病理学报》1994年第4期299-304,共6页Acta Phytopathologica Sinica

基　　金：江苏省农业科学发展基金

摘　　要：通过对福建、浙江、江西、湖北、江苏及山东6省芦笋茎枯病菌单孢菌株的分类地位、生物学特性及致病力等的研究,结果表明:6省菌株的培养性状有些差异,但分生孢子形状、大小及其对芦笋致病力等方面则基本一致。各菌株在芦笋茎段等5种培养基上均可形成α、β和中间类型3种孢子,证明中国芦笋茎枯病菌同属Phomopsis asparagi (Sacc.) Bubak。各菌株α孢子大小为5.0～12.5×1.8～3.8μm,β孢子为17.5～26.0×2.0μm,中间类型孢子为12.0～16.0×2.5～4.5μm。菌丝生长最适温度25℃,生长高限温度为33℃。Comparative studies were made on the biological characters and pathogenicities of single isolates of stem blight of asparagus collected from six provinces (Fujian, Zhejiang, Jiangxi, Hubei, Jiangsu and Sandong) in 1990~1991. Expermental resplts indicated that the optimum temparature for mycelial growth is 25℃ and the maximum is 33℃. The isolates, have some differences in the growth rate of mycelium , colony forms, pigment secretes, etc. in different culture media of PDA, Hoston, Czapek-Dox, Phyllbsticta K. N, 20% extract of asparagus and stem asparagus, but the forms and sizes of a-spores were similar. In addition, pathogenicity to the variety of Mary Washington-500 showed no obvious difference. Results showed that pathogenic fungi of stem blight of asparagus in China belong to the same species i. e. Phomopsis asparagi (Sacc. ) Bubak.

关 键 词：茎枯病菌 生物学特性 石刁柏 

分 类 号：S436.44[农业科学—农业昆虫与害虫防治]