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Pakistan Journal of Biological Sciences
  Year: 2003 | Volume: 6 | Issue: 6 | Page No.: 615-621
DOI: 10.3923/pjbs.2003.615.621
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Impact of Bacillus thuringiensis Subsp. Kurstaki on Biology of Helicoverpa armigera

Feeroza Khalique and Khalique Ahmed

Studies on mortality and rate of development of Helicoverpa armigera due to feeding of spore- -endotoxin complex of indigenous strain HD-695 (8,500 IU mg-1) and standard strain HD-1-S-1980 (16,000 IU mg-1) of Bacillus thuringiensis var. kurstaki revealed that the differences in potencies did not cause significant differences in retardation. Both the bacterial toxins induced similar biological effects (significant larval mortalities, marked larval retardation, reduction in pupation, emergence and fecundity, as well as inconsistent increase in pre-oviposition period and prolongation of generation period) of the test insect.
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  •    Screening of Bacillus thuringiensis Isolates Recovered from Diverse Habitats in India for the Presence of cry1A-type Genes and Cloning of a cry1Ac33 Gene Toxic to Helicoverpa armigera (American Bollworm)
How to cite this article:

Feeroza Khalique and Khalique Ahmed , 2003. Impact of Bacillus thuringiensis Subsp. Kurstaki on Biology of Helicoverpa armigera. Pakistan Journal of Biological Sciences, 6: 615-621.

DOI: 10.3923/pjbs.2003.615.621


31 March, 2009
nhover r. barnacha:
It is incomplete. more details are needed.




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