Differentiation of citrus tristeza closterovirus (CTV) isolates by single-strand conformation polymorphism analysis of the coat protein gene

adn citrus citrus tristeza closterovirus closterovirus closterovirus tristeza del citrus closterovirus tristeza du citrus coat proteins dna electroforesis electrophoresis enfermedades de las plantas maladie des plantes methode methods molecular genetics nucleotide sequence pathogens pcr plant diseases plant viruses polymerase chain reaction proteine proteins virus virus de las plantas viruses