عزل و تشخيص الفطريات المرافقة للحشرة القشرية البيضاء Parlatoria blanchardii Targ و اختبار أمراضيتها على خواص نخيل التمر و على الحشرة القشرية البيضاء

الملخص EN

The research conducted during the growth season 2010 to isolate and diagnose the fungi associated with white scale insect Parlatoria blanchardii Targ.

which affecting leaf pinacs of date palm from three areas of Basra, Garmat Ali, Shatt al-Arab and the city center.

The appearance ratio of fungi were calculated and tested the ability pathogenicity of fungi isolated on leaf pinacs of date palm, The ability of fungi to gave enzymes (cellulase and catenase) was studied and compared with Biological fungi Beauveria bassiana and effect of isolated fungi on mortality of white scale insect was studied.

The results of fungi isolation from white scale insect showed the fallowing fungi :-Alternaria alternata and A.

dianthicola, Cladosporium herbarum, C.

oxysporum, Fusarium solani, Helminthosporium sp.

Phoma glomerata , Stemphylium sp.

and Ulocladium sp., the fungi A.

alternate and F.

solani recorded the highest percentage of appearance it were (21.48 and 17.04) %, respectively, the city center and Shatt al-Arab gave the highest percentage of Appearance of The fungus Were (10.86 and 10.84) %,respectively.

The result of and the pathogenicity tests showed ability of fungi A.

alternata, A.

dianthicola, Fusarium solani, Helminthosporium sp., Phoma glomerata , Stemphylium sp.

and Ulocladium sp.

to infected of leaf pinacs of date palm by differ degrees the results also showed ability of fungi A.

alternata, A.

dianthicola, Fusarium solani, Helminthosporium sp., Phoma glomerata, Stemphylium sp.

and Ulocladium sp.

to secretion of the cellulase enzyme varying degrees while the fungi C.herbarum , C.

oxysporum and B.

bassiana give The highest average of growth in the media containing the Caiteen compared to other fungi.

The fungi C.herbarum, C.

oxysporum and B.

bassiana give the highest mortality percentage of white scale insect were (37.35, 29.19, 34.41) %, respectively.