تأثير تغذية حشرة من تدرن أوراق الفستق Forda hirsute Mordvilko (Hemiptera : Aphidoidea : Pemphigidae)‎ في التركيب النسيجي لأورام الفستق الحلبي Pistacia vera L.

الملخص EN

The results of current study showed that the aphid of tuberclosis Forda hirsuta on Pistachio leaves was recorded for the first time in Iraq.

Histological cross-sections of the galls made by this aphid on pistachio leaves showed variable damages as result of their feeding on pistachio leaflets in accordance with the size of the galls.

It is found that the small galls don't show an apparent damage whereas medium galls clearly doubled the epidermal cells and increased cuticle thickness with an increase in tannins and the number of Schizogenous and laticiferous ducts .Large galls showed clear changes in the number,shape and size of the hypodermal cells as well as increase in the thickness of cuticle, the destruction of phloem tissue cells and the exchange of wood and phloem sites in a single vascular bundle along with an increase in the number of schizogenus ducts and the amount of tannin compared with the un infected leaflets