Biological characterization of citrus tristeza virus isolates by in vitro tissue cultures

citrus citrus aurantiifolia citrus macrophylla citrus paradisi citrus sinensis citrus tristeza closterovirus closterovirus tristeza del citrus closterovirus tristeza du citrus cultivo de tejidos culture de tissu enfermedades de las plantas grapefruits maladie des plantes naranja dulce orange douce pathogens plant diseases plant viruses pomelo sweet oranges tissue culture toronja virus de las plantas