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OCCURANCE AND DISTRIBUTION OF POTY VIRUSES INFECTING GARLIC IN PAKISTAN

 S. Talat Gilani*, Shahid Hameed* and Hussain Shah* 

  * National Agricultural Research Centre, Islamabad, Pakistan. Corresponding author: talatgilani@hotmail.com

ABSTRACT

  The study was designed to detect and determine the prevalence, incidence and distribution of the poty viruses causing diseases in garlic (Allium sativum) from major garlic growing areas of Pakistan. The yellow stripes, mosaic and chlorotic spot symptoms of the disease resemble the viral infection in garlic reported to occur worldwide. Altogether 690 samples were collected from 29 locations of Punjab and 40 locations of Khyber Pukhtunkhwa to determine the prevalence of Onion Yellow Dwarf Virus (OYDV) and Leek Yellow Stripe Virus (LYSV). Serological testing DAS-ELISA technique was used to test the samples collected from the farmer fields. Based on the DAS-ELISA poty viruses OYDV and LYSV were detected from both provinces although the percentage incidence varied from location to location. Few areas of district Punjab were found free of LYSV but OYDV was prevalent in all locations irrespective of the varieties cultivated. Maximum disease incidence was detected in Swabi (KPK) where OYDV was 90% and LYSV was 38% while in Punjab major disease incidence of OYDV (87.14%) and LYSV (91.44%) was found in Sialkot.

 

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Pakistan Journal of Agricultural Research

June

Vol. 32, Iss. 2, Pages 218-415

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