Mycosystema
菌 物 學 報 15 May 2008, 27(3): 343-350
jwxt@im.ac.cn
ISSN1672-6472 CN11-5180Q
2008 Institute of Microbiology, CAS, all rights reserved
李喜玲 高智謀* 李艷梅 曹中革 陳偉 汪世軍
安徽農(nóng)業(yè)大學植物保護學院 合肥 230036
摘 要：從安徽合肥,、蚌埠,、長豐、和縣等市,、縣的番茄,、辣椒、草莓,、葡萄等發(fā)病寄主上分離鑒定獲得18個灰葡萄孢Botrytis cinerea菌株,，采用菌絲塊創(chuàng)傷接種法，分別測定了上述不同寄主來源的灰葡萄孢菌對番茄果實和葉片的致病力,。結(jié)果表明,，所有供試菌株接種番茄果實后均引起發(fā)病，但不同菌株所致病斑的平均直徑有顯著差異,，顯示灰葡萄孢菌株間對番茄果實的致病力存在明顯分化,。按照在番茄果實上所致病斑的平均直徑大小可將供試菌株致病力劃分為較強、中等和較弱3種類型,?？傮w來說，來自番茄的菌株對番茄果實的致病力較強,，來自草莓,、葡萄和辣椒的菌株對番茄果實的致病力較弱，但來自相同寄主的菌株間致病力也存在差異,，菌株致病力差異與菌株地域來源無明顯相關(guān),。供試灰葡萄孢菌株接種番茄葉片后，除CF1外,，均可引起番茄葉片發(fā)病,，但不同菌株所致番茄葉片病斑的平均直徑也有顯著差異；供試菌株對番茄葉片的致病力差異與菌株的寄主和地域來源無顯著相關(guān),。
關(guān)鍵詞：番茄灰霉病,，病斑平均直徑，致病類型,，地域來源
Differentiation of pathogenicity of Botrytis cinerea strains from different hosts to tomato
LI Xi-Ling GAO Zhi-Mou LI Yan-Mei CAO Zhong-Ge CHEN Wei WANG Shi-Jun
College of Plant Protection, Anhui Agricultural University, Hefei 230036, China
Abstract: Eighteen isolates of Botrytis cinerea were obtained from the diseased plant tissue collected in Hefei, Bengbu, Changfeng and Hexian in Anhui province, by means of tissue isolating method. The pathogenicity of the isolates of B. cinerea from different hosts to the fruits and leaves of tomato were investigated by applying wound inoculation with mycelial blocks. The results showed that all of the tested isolates caused grey mould on tomato fruits, but there was significant difference in the average diameters of the lesions caused by different isolates, suggesting that there was significant differentiation in pathogenicity of B. cinerea strains to tomato fruits among isolates. According to the average diameters of the lesions on tomato fruits, the pathogenicity of the all isolates was classified into three categories: strong, intermediate and weak. In general, the isolates from tomato were more strongly pathogenic to tomato fruits than the isolates from strawberry, grape and capsicum. However, there was difference in pathogenicity among the different isolates from the same host, and the pathogenicity difference was not obviously related to the localities of isolates. After inoculating of tomato leaves, all of the tested isolates except CF3 caused grey mould on tomato leaves, but there was significant difference in the average diameters of the lesions caused by different isolates; and the difference in pathogenicity to tomato leaves was not obviously related to the host and locality of isolates.
Key words: tomato grey mould, average diameters of lesions, pathogenicity category, locality
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