الاختلاف الشكلي لحشرة من الدراق الأخضر Myzus persicae (Sulzer)‎ على التبغ و الدراق في سورية

الملخص EN

The study was conducted in eight tobacco and peach growing sites in Syria (Kharabu, Damascus countryside, Quneitra (two sites), Lattakia (two sites), Al-Ghab plain and Masiaf) during the period 2015-2018.

The aim of the study was to compare the variation of nine morphological characteristics for 16 populations of M.

persicae (Sulzer) originating from two host-plants, peach and tobacco.

One-way ANOVA was used to examine the effect of the host-plant on M.

persicae morphological variation, and multivariate analysis of variance (MANOVA) to determine the effect of the host and the region on the studied morphological characteristics of this species and the correlation between them.

The most important discrimination characteristics were the length of third antennal segment (antIII), length of base of sixth antennal segment (baseVI), length of hind femur (hf), length of siphunculus (ls) and length of cauda (lc) which were greater in the aphids from tobacco than in those from peach.

The result of the multivariate analysis of variance (MANOVA) showed the most significant effect of the host and the region was on the following characteristics (color, antii, baseVI, pt, Urs, hf, Is and Ic), where the percentage of their common effect was 73.32%, whereas two characteristics (ht2 and mws) were less affected (13.62%) by the host and the region.

The results showed a high correlation between the studied indicators except for the maximal width of distal swollen part of siphunculus (mws) and length of second segment of hind tarsus (ht2).