تأثير الأشعة فوق البنفسجية في حيوية أبواغ الفطر Aspergillus niger Van Tieghem

Abstract EN

The results of this experiment has affected exposure time of ulta-violat light on isolate on Meal extract agar and Czapek’s Dox agar that greatest activity in mutant of election isolates in exposure time (80 min.) that the mutation percentage on Meal exract agar and Czapek’s Dox agar (73.62 % and 100 % respectively), while the averge of spores in both media (4 x 106), while final exposure time (100 min.) that greatest activity to kill fungal units (spores) on Meal extact agar and Czapek’s Dox agar that the kill rate (92.33 % and 98.50 % respectively) and ultra violet affected to lower Average spores of colonies of Asp.niger that development from spores that exposure to u.v.

The Averge of spores was reduced in Czapek’s Dox agar and Meal extract agar (2 x 106 and 4 x 106 respectively) in contrast with control that the Averge spores on Meal extract agar and Czapek’s Dox agar (3 x 107 and 2 x 107 respectively).

Highest mutation percentage by ultra violat light in exposure time (60, 80, 100 min.) related of Asp.niger (100 %), while higher mutation percentage on Meal extract agar (73.62 %) in exposure time 80 min.while higher kill rate on Meal extract agar and Czapek’s Dox agar (92.33 % and 98.50 % respectively) onexposure time 100 min.