Botany online 1996-2004. No further update, only historical document of botanical science!
Tobacco Plants Displaying Symptoms Caused by Secondary Infection with the Tobacco Mosaic Virus |
To the left: healthy plant. To the right: plant infected with the wild type TMV vulgare
To the left: strong "Yellow strain" (CP 415). To the right: Mutant induced by treatment of wild-type RNA with nitrite