Final diagnosis


Tobacco mosaic virus (TMV)

Virginia tobacco leaf showing large vein banding. Tobacco mosaic virus (TMV)
Dark green mosaic patterns. Tobacco mosaic virus (TMV)
The lamina of this leaf is of darker green colour along the veins (vein banding). Tobacco mosaic virus (TMV)
This young leaf with mosaic pattern is smaller and narrower than the less affected neighboring leaves. Tobacco mosaic virus (TMV)
Besides being more slender with an irregular contour, this young leaf is partially covered by prominent blisters. Tobacco mosaic virus (TMV)
The viral particles of tobacco mosaic virus (TMV) are rigid, rod-shaped and can reach the length of 300 nm; being 18 nm in diameter.