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Dr. Yasser Afifi Elsayed Abderhman :: Publications:

Title:
Effect of Bacillus thuringansis var kurstaki on some biochemical parameters of the cotton leaf worm Spodoptera littoralis (Biosd)
Authors: M.W.F.Younes, Y.A.Elsayed and M.M.A. Hegazy
Year: 2008
Keywords: Not Available
Journal: Not Available
Volume: Not Available
Issue: Not Available
Pages: Not Available
Publisher: Not Available
Local/International: Local
Paper Link: Not Available
Full paper Not Available
Supplementary materials Not Available
Abstract:

The present study was planned to elucidate the effect of LC30 of Bacillus thuringiensisvarkurstaki on the enzymatic activity of non specificesterases ( - and -esterases), alkaline and acid phosphatases and carbohydrate hydrolyzing enzymes (invertase, trehalase and amylase) of the cotton leafwormSpodoptera littoralis (Boisd.) treated as 4th larval instar. It’s clear from our results that the applied concentration induced decrease in the enzyme activities of both  & -esterases at different time intervals post-treatment (6, 12, 24 and 48 hrs.) Alkaline and acid phosphatases activities were significantly decreased (p <0.01) at all inspected times. Additionally, LC30 of tested material, caused significant decrease in the carbohydrate hydrolyzing enzymes of the treated larvae as compared to control groups. Yasser.Abdelrahman@fsc.bu.edu.eg

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