First registration of the fungus Cladosporium cladosporioides as a cause of the Cladosporian Spot Disease and the possibility of biological control

Publish Year: 1397
نوع سند: مقاله کنفرانسی
زبان: English
View: 283

متن کامل این Paper منتشر نشده است و فقط به صورت چکیده یا چکیده مبسوط در پایگاه موجود می باشد.
توضیح: معمولا کلیه مقالاتی که کمتر از ۵ صفحه باشند در پایگاه سیویلیکا اصل Paper (فول تکست) محسوب نمی شوند و فقط کاربران عضو بدون کسر اعتبار می توانند فایل آنها را دریافت نمایند.

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

CFAS01_263

تاریخ نمایه سازی: 20 آبان 1397

Abstract:

The aim of this study was to control the Cladosporian disease in the eggplant caused by the fungus Cladosporium cladosporioides using the biological fungi Aspergillus carbonarius, Trichoderma harzianum and T. koningii, the effect of these cultures was tested in vitro. Three isolates of C. cladosporioides were obtained from various regions for growing eggplant in Basrah governorate. When testing the pathogenic capacity of the three isolates, isolation (1) from Shatt al-Arab area was found the most severe where the severity of infection was 68.7%, which has been nominated for testing. Bio-fungicide filtrate have been tested in reducing the growth of pathogenic fungi in the PDA medium. All the concentrations of filtrates affected the fungal growth of pathogenic fungi with a rate of inhibition between 29.61 and 40.69%. In addition, the density of the fungus spores with concentrations of 10, 20 and 30 ml / L was reduced with the reduction of pathogenic fungi C. cladosporioides. The average number of spores per one ml of pathogenic fungus was 22.73, 19.96 and 16. 95 × 103, respectively, compared with the control treatment of 40.11 × 103. To compare the results, carbendazim pesticide was used to inhibit pathogenic fungus in the PDA medium with a rate of inhibition of C. cladosporioides 33.95, 68.26, 82.99 and 100% respectively for concentrations 25, 50, 75 and 100. The results of the effect of biological fungi filtrates on the infection of eggplant with the leaves spot disease, which is caused by C. cladosporioides, were also confirmed. A. niger, T. harzianum and T. koningii (20 and 30 ml / L) were found to reduce the severity of C. cladosporioides infection in the eggplant plant with 33.65, 30.12 and 28.42% respectively for fungus A. niger, T. harzianum and T. koningii compared to the treatment of the control, which amounted to 66.86%. The wet and dry weight of the eggplant plants treated with bio-fungicide was increased. In the experiment of testing of peroxidase enzyme as an indicator of plant defenses with the effect of biophysics, the plants treated with bio-fungicide showed increased peroxidase compared to the comparison treatment.

Authors

Abdulnabi A.A Matrood

Department of Plant Protection -College of Agriculture - University of Basrah, Iraq