The effect of insecticides on growth,germination and cuticle-degrading enzyme production by Isaria fumosorosea |
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| Authors: | Shaukat Ali Zhen Huang Shixing Zou Muhammad Hamid Bashir |
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| Affiliation: | 1. Engineering Research Center of Biological Control, Ministry of Education, College of Natural Resource and Environment , South China Agricultural University , Guangzhou City , People's Republic of China;2. Department of Agricultural Entomology , University of Agriculture , Faisalabad , Pakistan |
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| Abstract: | The influence of six chemical insecticides on growth, sporulation, conidial germination and cuticle-degrading enzyme production by Isaria fumosorosea were investigated under laboratory conditions. Maximum reduction in vegetative growth, sporulation and conidial germination in relation to the control treatment was observed for Chloranthraniliprole whereas Indoxacarb proved to be the safest insecticide causing lowest reduction in these parameters. Chloranthraniliprole, Chlorpyrifos and Chlorfenapyr caused higher reduction in enzyme activities (chitinase, Pr1, Pr2 and lipase) at all three concentrations whereas very low reduction in enzyme activities was caused by Hubendamide+ Avermectin and Indoxacarb when used at 10 µg/ml. The data presented can be used for future recommendations of these insecticides in IPM programmes where I. fumosorosea is an important control agent. |
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| Keywords: | biocontrol program entomopathogenic fungi insecticides |
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