Cadang-Cadang-Like Viroid in Oil Palm in the Solomon Islands. D. Hanold, Department of Plant Pathology, Waite Agricultural Research Institute, University of Adelaide, Australia 5064. J. W. Randles, Department of Plant Pathology, Waite Agricultural Research Institute, University of Adelaide, Australia 5064. Plant Dis. 73:183. Accepted for publication 29 September 1988. Copyright 1989 The American Phytopathological Society. DOI: 10.1094/PD-73-0183A.
Several oil palms (Elaeis guineensis Jacq.) with symptoms resembling those associated with coconut cadang-cadang viroid (CCCV) infection in the Philippines (2) were observed in a plantation near Honiara, Solomon Islands. The youngest three or four fronds were green, but the remainder had numerous nonnecrotic bright orange spots 2-3 mm long. Affected palms were stunted, and bunches of nuts were reduced in size and number. Nucleic acid extracts of leaves were analyzed for CCCV by fractionation on polyacrylamide gels, electrotransfer of nucleic acids to nylon membranes, and subsequent hybridization assay with a