Abstract

Bean common mosaic potyvirus (BCMV) is an important seed borne pathogen of French bean. Differential inoculation with bean common mosaic virus at cotylodonary trifoliate leaf stage and pre-flowering stage of crop growth revealed that cotyledonary leaf infection favored maximum disease expression. Under immunosorbent electron microscopy (ISEM) the virus particles of filamentous structure having a diameter of 750 nm (l) and 15 nm (w) were observed. These particles gave positive precipitin tests with polyclonal antiserum of Potato virus Y.

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