Hubungan Pemencaran Kutu Daun Dengan Diseminasi Potato Virus Y (Pvy) Pada Tanaman Kentang (Solanum Tuberosum L.) : Aphid Dispersal In Relation To Dissemination Of Potato Virus Y (Pvy) On Potato (Solanum Tuberosum L)

Abstract: Two aphid species, Myzus persicae (Sulzer) and Aphis gossypii (Glover), and five potato varieties (Alpha, Bintje, Berthaultii, Granola, dan Premiere) were used in the experiments to study the relationship between insect vector dispersal and dissemination of disease caused by potato virus Y (PVY). The results showed that M. persicae could cause time for the apperance of first symptom two to four time faster than A. gossypii. Although statistical analysis (anova) in general showed that disease incidence is not significantly di \u27fferent for each treatment, M. persicae caused higher disease incidence than A. gossypii on Bintje (56 and 74 days after planting). M. persicae seems to have better capabilito disperse when the plants reach vegetative growth stadia which may result in higher efficiency of transmitting the virus. The relationship between aphid dispersal and dissemination of PVY can be grouped into four categories ( 1) plant with aphid and showing symptom(2) plant without aphid but showing symptom(3) plant with aphid but without symptom(4) plant without aphid and without symptom. Keywords : Myzus persicae, Aphis gossypii, potato virus Y (PVY