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Journal of Biological Sciences
Year: 2001  |  Volume: 1  |  Issue: 4  |  Page No.: 214 - 217

Prevalence and Distribution of Four Pepper Viruses in Sindh, Punjab and North West Frontier Province

Shah, H., S. Khalid and I. Ahmad    

Abstract: To ascertain the prevalence and distribution of four major pepper viruses viz. chili veinal mottle potyvirus (CVMV), cucumber mosaic cucmovirus (CMV), tobacco mosaic tobamovirus (TMV) & potato virus Y (PVY). Surveys of chili crop in three major provinces of Pakistan were conducted during 1996-98. At each location 3-5 farmer`s fields were inspected and samples showing virus-like symptoms were collected. A total of 500 samples (200 Punjab, 200 Sindh and 100 NWFP) were collected and tested through direct double antibody sandwich Enzyme-Linked Immunosorbent Assay (DAS-ELISA). CVMV & CMV appeared as the most prevalent viruses in almost all the surveyed areas. In Sindh, the incidence of CVMV, CMV, TMV, and PVY was 9, 16, 5 and 3.5%, respectively. In Punjab, CVMV appeared as the most important virus (63%) infecting pepper crop in all districts followed by CMV (20%). Co-infection of CVMV and CMV (10%) was recorded in Faisalabad, Multan and Darya Khan. In most CMV positive samples, TMV or CVMV or PVY were also detected (co-infection). In NWFP, CVMV incidence was 50% followed by CMV (17.8%). On the average, survey data showed that CVMV (40.6% incidence) is still the most prevalent virus infecting pepper followed by CMV (17.8%) in these three provinces. PVY was only detected in Sindh (3.5%) and NWFP (6%). TMV was not detected in any place of NWFP and Punjab, but detected in mixed infection in Sindh (5%). Thus there is 19.6% increase in CVMV incidence while frequency of other three viruses remained the same as compared to previous reports.

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