In Vitro Inoculation Technique for the Identification of Resistance to Tomato yellow leaf curl virus in Tomato In Vitro Inoculation Technique for the Identification of Resistance to Tomato yellow leaf curl virus in Tomato Identification for resistance of tomato varieties against geminiviruses Analysis of key virulent factors by pseudo-recombination between Cucumber mosaic virus M and Fny strains Construction of infectious clone of Strawberry vein banding virus Construction and pathogenicity evaluation of infectious clones of Cotton leaf curl Multan virus infecting Hibiscus rosasinensis and Gossypium hirsutum Construction and biological activity of infectious clones of HSVd (Hop stunt viroid) and its intramolecular recombinant