| Abstrak/Abstract |
Natural orchids are one of the important ornamental plants that were cultivated in tropical countries, including Indonesia. Virus infections has been important limiting factor in orchids cultivation because it decreases the orchids quality. Odontoglossum ringspot virus (ORSV) is one of the most reported virus infecting orchids which spread widely in the world. During 2010–2014 surveys of viral infections were conducted in Indonesia. The orchids were found infected by virus, showed symptoms of mosaic, mottle, chlorotic, necrotic, streak, wilting leaf, and ringspot on leaf surface. Detection with serological test DAS-ELISA showed only 11 from 125 samples were infected by ORSV with total incidence of 8,8%. Nine leaf samples of Phalaenopsis sp. were infected, respectively. Thus, it was concluded that Phalaenopsis is orchids genus which is the most abundantly and susceptibly infected by ORSV. The results proved that ORSV have entered and spread widely by infected orchids in orchids landscape (nursery), semi-natural forests (botanical gardens), and natural forest (national park) throughout Indonesia. This is the first report of ORSV infecting natural tropical orchids in Indonesia.
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