Dark Tobacco Varieties Andy Bailey. Dark Varieties Newer varieties: –Broader spectrum of disease resistance –More upright growth habit –Increased yield.
M.M. Hernandez Tobacco mosaic virus. Tobacco mosaic virus TMV Genus Tobamovirus 15 members naked, rigid rod, + unsegmented ss RNA No family assignation.
Assembly, Maturation, and Release (Getting it all together and leaving!)
Plant Diseases A disease is defined as any type of injurious abnormality A pathogen is any biological agent that causes an injurious abnormality.
Viruses Discovery of Viruses Discovery of Viruses BerijerinckBerijerinck (1897) (1897) coined the Latin name "virus" meaning poison for the substance.
