Vol. 11, Issue 10 (2022)

Bottle gourd occupies a significant area in the Jammu sub- tropics and PRSV-W, a potyvirus belonging to family Potyviridae, is one of the major viruses identified responsible for mosaic. A viral isolate was collected during survey from Salaher village of R.S. Pura block in Jammu and was later identified as PRSV-W through RT-PCR. A comparative study was conducted to understand the host range of this virus. Twenty-one plants belonging to different families viz., Cucurbitaceae, Solanaceae, Malvaceae, Fabaceae, Brassicaceae, Amaranthaceae and Caricaceae, were inoculated with the isolate and the host reaction was recorded. All the cucurbits were susceptible to PRSV-W but showed varied range of systematic symptoms like mosaic, mosaic mottling, yellowing blisters on leaves, leaf deformatiom, leaf curling, enations and stunting. However, Amaranthus spp. developed localized lesions while all the other plant species were non host.