Choi, Yoon Gi2006-12-282006-12-2819971997http://hdl.handle.net/2440/19003Copies of author's previously published articles inserted.Includes corrigendum.Bibliography: leaves 97-106.xiii, 106, [69] leaves, [31] leaves of plates : ill. (some col.), maps ; 30 cm.This thesis reports an investigation of the etiology of ScSMD (sugarcane striate mosaic disease) by biological and microscopic studies and by nucleic acid studies. Studies of ScSMD affected sugarcane are followed by the detection, isolation, cloning and partial sequencing of a disease specific dsRNA, and the tentative classification of the putative viral agent from the partial sequence. This study also describes the ScSMD associated virion and an improved protocol for the purification of dsRNA.293403 bytesapplication/pdfenSugarcane Diseases and pests North Queensland.Nucleic acid hybridization.Molecular cloning.RNA viruses.Thesis