Typescript; author's name is corrected in pen on t.p. Includes bibliographical references (leaves 52-55). A study has been made of an undescribed virus disease, Centrosema mosaic. Field observations on its occurence, ecology, symptoms, and host range, together with experimental data on mechanical, insect and other methods of transmission are recorded.

Includes bibliographical references (leaves 147-171). / xx, 171 leaves : ill. (some col.), photos ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Studies factors affecting the rate of epidemic progress of cucumber mosaic virus in Lupinus angustifolius. / Thesis (Ph.D.)--Dept. of Crop Protection, University of Adelaide,1992

Bibliography: leaves 104-130. The aim of this thesis is to characterise subgenomic RNAs of cucumoviruses and the functions of their encoding genes. Strains of cucumber mosaic virus (CMV) are classified into two major subgroups (I and II) on the basis of nucleotide sequence homology. The V strain of tomato aspermy virus (V-TAV) and a subgroup I CMV strain (WAII) are chosen to determine whether the 2b genes encoded by these viruses are expressed 'in vivo'. For further investigation of the 2b gene function, cDNA clones of three genomic RNAs of V-TAV are constructed. Using the infectious cDNA clones of V-TAV, a mutant virus containing only one of the two repeats is constructed.

Typescript. Primarily to identify a virus which was isolated from a single Gladiolus plant early in 1962 which showed some resemblance to Cucumber mosaic virus. Exemplifies the large differences which may occur in the biological properties of viruses, even though their physico-chemical properties may be similar.

Bibliography: leaves 104-130. / vi, 130, [25] leaves, [13] leaves of plates : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / The aim of this thesis is to characterise subgenomic RNAs of cucumoviruses and the functions of their encoding genes. Strains of cucumber mosaic virus (CMV) are classified into two major subgroups (I and II) on the basis of nucleotide sequence homology. The V strain of tomato aspermy virus (V-TAV) and a subgroup I CMV strain (WAII) are chosen to determine whether the 2b genes encoded by these viruses are expressed 'in vivo'. For further investigation of the 2b gene function, cDNA clones of three genomic RNAs of V-TAV are constructed. Using the infectious cDNA clones of V-TAV, a mutant virus containing only one of the two repeats is constructed. / Thesis (Ph.D.)--University of Adelaide, Dept. of Plant Science, 1997

Bibliography : leaves 92-99. / v, 99, [37] leaves, [14] leaves of plates : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Biochemistry, 1992