M. Roistacher
This review covers early vector transmission studies with citrus tristeza virus, tying together the studies in Brazil and Africa (1946-1953), in California and Rorida (1950-1969) with the more recent studies in California. It emphasizes the dramatic changes in transmissibility of the tristeza virus, and discusses the implications of these changes on the possible spread of severe seedling yellows isolates in California. The seriousness of the threat of Toxoptera citricida moving into areas where the aphid is non-epidemic is presented.
M. Roistacher
This review covers early vector transmission studies with citrus tristeza virus, tying together the studies in Brazil and Africa (1946-1953), in California and Rorida (1950-1969) with the more recent studies in California. It emphasizes the dramatic changes in transmissibility of the tristeza virus, and discusses the implications of these changes on the possible spread of severe seedling yellows isolates in California. The seriousness of the threat of Toxoptera citricida moving into areas where the aphid is non-epidemic is presented.