AJ Life Sci. 2019, 2 (2): 91-99

Isolation and Identification of Fungal Pathogens Associated with Diseases of Onion Crop in District Swat, Pakistan

Muhammad Nazir Uddin, Nasrullah and Muddasir Khan*

Center for Biotechnology and Microbiology, University of Swat, Pakistan


Onion is an important vegetable and a source of income for formers inDistrict Swat, Pakistan. However, the crop is attacked by several pathogensi.e. fungi, bacteria, viruses and nematodes. Therefore, a study was carriedout for estimation of fungal diseases of onion crop in district Swat. Withinthis study about 50 samples of diseased onion crop were collected from 17different regions of District Swat. The most prevalent fungal borne oniondiseases were black mold (38%), onion rust (32%), Blue Mold Rot (10%) andseedling. Fungal species were consistently isolated from all infectedsamples. In which Aspergillus was isolated from 82% samples, Puccinia alliwas from 70%, Alternaria porri from 52%, Fuserium spp from 42%Penicillium spp from 40%, Peronospora destructor from 35%, Pyhtaiumfrom 23% and Rhizoctonia solani from 18% of samples. These fungal speciesconsistently isolated and cultured from diseased onion plant of differentfields in Swat.

Keywords Onion crop, Fungal diseases, Aspergillus




May 27, 2019

Received Revised

October 6, 2019


October 9, 2019

Available Online

October 10, 2019

Corresponding author email:


How to Cite

Uddin MN, Nasrullah, Khan M. Isolation andidentification of Fungal Pathogens Associated withOnion Diseases in District Swat, Pakistan. Abasyn Journal of Life Sciences 2019; 2(2): 91-99.

Abasyn Journal of Life Sciences , ISSN (online): 2663-1040, Published by Abasyn University