عزل و تشخيص الفطريات الداخلية من نباتي الحنطة Triticum aestivum L. و الشعير Hordeum vulgare L. المزروعة في عدد من حقول قضاء القرنة

الملخص EN

Different parts of wheat and barley plants were collected from four fields of wheat in Qurna region northern of Basarh .

Atotal of 250 samples of wheat and 45 samples of barely were collected during the period October 2014 to April 2015 ,97 species of endophytic fungi belonging to 28 genera as well as 39 of sterile mycelium were isolated from wheat and 42 species of endophytic fungi belonging to 20 genera in addition to 11 of sterile mycelium from barley plant .Anamorphic fungi were the dominant group with 85 % and 81.5% for wheat and barley, respectively .

the most occurred isolated genus were Cladosporium and Aspergillus on the wheat and barley plants with percentage of 45% and 62.2% respectively ,Cladosporium genus includes higher number of species that isolated 10 and 5 from wheat and barley plants respectively ,The study showed that there was a variation in numbers of species during the phemological stages of growth for both plants the largest number of species was at the stage of maturity 359 and 308 for wheat and barley plants respectively, The results showed that Cladosporium exhibited the highest frequency 22.7% and 23.3% for wheat and barley plants respectively ,among the rest of the genera, .the genera Cladosporium , Alternaria , Aspergillus and Candida were dominated on both plants ,the simpson index for whest fields were 0.967,0.97,0,97 and 0.975 while for barley fields were 374.0 and 37002 , the highest similarity in fungal community was 20.61% between fields No.2 and fields No.4 of wheat plant and it was 19.04% for barley plant.