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Characterization of Okra Yellow Vein Mosaic Virus from South Gujarat
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Incidence of Yellow vein mosaic disease (YMD) of the okra ranging from 10-50 per cent in the different field of South Gujarat late winter to summer. The disease appeared with the appearance of true leaves and was seen at all the stages of the growth and was seen at all the stages of the growth. The initial symptoms on young leaves were diffuse and mottled in appearance. Clearing of the small veins starts near the leaf margins, at various points however, were more pronounced towards the petiole end as compared towards the expanded margins of the leaf. Gradually the yellowing increases covering the interveinal area and entire leaf appeared yellow. In few cases the leaf tissue necrosis has also been reported. Fruit, stem and other above ground parts of the infected plants also turned yellow in color. Early infected plant remains dwarf. Market acceptability of the yellow colored fruits reduced severely causing enormous economic loss. In some of the plants no green colour symptoms were seen, however, had another type of symptoms principally characterized by the vein thickening.
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