Abstract
Transmission and movement studies were conducted on orchids mechanically inoculated with cymbidium mosaic virus (CyMV) or odontoglossum ringspot virus (ORSV). Transmission of CyMV and ORSV to University of Hawaii (UH) Dendrobium hybrids was efficient; both viruses were detected in inoculated leaves a minimum of 3 days after inoculation. Cymbidium mosaic virus moved systemically from inoculated leaves to roots (minimum 10 days after inoculation) and then to other leaves (minimum 20 days after inoculation). Thirty-two of 33 CyMV-inoculated orchid plants were systemically infected. Systemic movement of ORSV took about 7 mo and occurred in only one of 38 inoculated orchid plants. Seven chemicals were evaluated for inactivation of CyMV on pruning tools for disease control [...]
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