title: Enhancement of pathogenicity of Bacillus thuringiensis by gamma rays.
abstract: Studies were conducted on the enhancement of pathogenicity of Bacillus thuringiensis by gamma rays on various species of termites. The results showed that the 72 hrs old and 60 or 70 kr irradiated culture of B. thuringiensis were more pathogenic than the non-irradiated ones. 168 hrs old and 150 kr (1.5 kGy) irradiated B. thuringiensis caused quicker mortality rate than the non-irradiated one as it shows maximum enhancement ratio (1.32).
authors.affiliation: Department of Zoology, University of the Punjab, Lahore, Pakistan.
authors.forename: Khalid I
authors.initials: KI
authors.lastname: Khan
authors.forename: Riffat H
authors.initials: RH
authors.lastname: Jafri
authors.forename: M
authors.initials: M
authors.lastname: Ahmed
mesh_terms: D000818:Animals; D001413:Bacillus thuringiensis / Q000472:pathogenicity* / Q000528:radiation effects*; D005720:Gamma Rays; D020049:Isoptera; D010572:Pest Control, Biological; D014774:Virulence