Screening of plant species for the presence of antiviral principles against okra yellow vein mosaic virus
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Authors
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K.B. PUN, SABITHA DORAISWAMY and R. JEYARAJAN
Department of Plant Pathology, Tamil Nadu Agricultural University, Coimbatore 641 003
Keywords:
Leaf extracts, antiviral principles, okra yellow vein mosaic virusAbstract
Among the 17 plant species screened, pre-inoculation sprays with leaf extracts of Prosopis chilensis and Bougainvillea spectabilis were highly effective in reducing okra yellow vein mosaic virus infection of okra (cv. Pusa Sawani), percentage reduction being 83.3 and 81.7%, respectively, over the control. The incubation period of the virus in plants treated with leaf extracts of P. chilensis and B. spectabilis increased to 19.1 d and 19.3 d, respectively, compared with 10.4 d in the control plants.
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