AT. KOTZAMPIGIKIS1, D. HRISTOVA2 and E. TASHEVA-TERZIEVA3
1 Agricultural University, BG - 4000 Plovdiv, Bulgaria
2 Plant Protection Institute, BG - 2232 Kostinbrod, Bulgaria
3 University of Sofia, Faculty of Biology, BG - 1000 Sofia, Bulgaria
KOTZAMPIGIKIS, At., D. HRISTOVA and E. TASHEVA-TERZIEVA, 2009. Virus-vector relationship between potato virus Y - PVY and Myzus persicae Sulzer. Bulg. J. Agric. Sci., 15: 557-565
Experiments were carried out to determine the periods of acquisition, latent period, inoculation and retention of Potato virus Y when transmitted by the green peach aphid. Trials were set up with indicators Physalis floridana L. and Niccotiana tabacum L., and the method DAS-ELISA was used to detect the virus in test plants. It was established that a single aphid is able to infect a healthy plant with PVY. The results showed that the optimal period for acquisition and inoculation of PVY by the aphids is 30 seconds and the minimal is 1 second. The period of retention of PVY by Myzus persicae Sulzer varies from 2 to 4 hours, depending on the number of healthy plants visited and the duration of feeding on them. With increase in the number of plants that vectors feed on, the retention period decreases i.e. aphids lose their ability to infect new plants more rapidly. The results were statistically processed using one-way analysis of variance (ANOVA) and Student-Newman-Keuls test for multiple comparisons (SNK).