In collaboration with Iranian Phytopathological Society

Document Type : Plant Pathology

Authors

1 Assistant Professor, Department of Plant Protection, College of Agriculture, Yasouj University, Iran

2 M. Sc. Graduate , Department of Plant Protection, College of Agriculture, Isfahan University of Technology, Isfahan, Iran

3 Professor, Department of Plant Protection, College of Agriculture, Isfahan University of Technology, Isfahan, Iran

4 Researcher at Botany Department, Iranian Research Institute of Plant Protection, Agricultural Research,Education and Extension Organization, Tehran, Iran.

Abstract

Potato and onion are the most important commercial crops in Iran especially Isfahan province. Anthracnose caused by several species of Colletotrichum spp. In order to identify and determine the possibility of cross contamination among pathogenic species of each host to another host, sampling was carried out from potato and onion fields in Faraydan, Daran, Damaneh, Chadegan and Ashgerd regions from Isfahan province. Morphological characteristics led to 170 isolates of Colletotrichum that 120 isolates belonged to C. coccodes from potato and 50 isolates belonged to C. circinans from onion. 35 isolates of those 170 isolates were selected to amiliphy DNA using specific primers for the ITS-rDNA region and sequencing.Pathogenicity test was conducted in greenhouse conditions. The results indicated the pathogenicity of  C. circinans on onion After 30 days, but  no symptoms were found on potato inoculated by thes isolates, while pathogenicity of  C. coccodes was confirmed on potato after 60 days and no any symptoms was found on onion plants. The results might have used to control anthracnose in potato and onion fields
 

Keywords

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