番茄叶霉病菌生物学特性的研究  

ON THE BIOLOGICAL CHARACTERISTICS OF TOMATO LEAF MOULD PATHOGEN

作　　者：许修宏[1] 程志明[1] 矫洪双 

机构地区：[1]东北农业大学植物保护系

出　　处：《东北农业大学学报》1994年第3期224-228,共5页Journal of Northeast Agricultural University

摘　　要：番茄叶霉病菌（Ｃｌａｄｏｓｐｒｏｒｉｕｍｆｕｌｖｕｍ）菌丝生长的适宜培养基为ＰＳＡ培养基和大麦培养基．菌丝生长的适宜温度为２０～２５℃，ｐＨ为５．０～６．０分生孢子萌发的适宜温度为２５℃．ｐＨ为４．０～５．０．相对湿度低于８６％时，分生孢子不能萌发．空气有利于孢子萌发．该病菌在ＰＳＡ培养基上培养４天后开始产孢，培养１３天累积产孢量最多．光照对产孢有明显抑制作用．在病叶表面越冬的分生孢子萌发率可达２０％左右．分生孢子的致死温度为４５℃，５ｍｉｎ。Tomato leaf mould is caused by Cladosporium fulvia .The best cultural medium for the growth of the pathogen was barley medium or PSA medium.The optimum temperature and pH values for the growth of the mycelium were 20￣25℃ and pH5.0￣6.0 respectively. Theoptimum temperature and pH values for the germination of spores were 25℃and pH 4.0￣5.0.The spores germinated when RH was over 86%. Oxygen was nceded for the germination.The pathogen began to sporulate four days after the conldia were inoculated in PSA medium and reached its maximum on the thirteenth day.The germination rate of the overwintered spores was about 20%,the thermal death point of the spores was 45℃ for 5 minutes.

关 键 词：番茄 生物学特性 叶霉病菌 

分 类 号：S436.412.1[农业科学—农业昆虫与害虫防治]