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inhibition de croissance

International Journal of Tropical Insect Science (1)

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Toxicity and growth-inhibitory activity of Polygonum senegalense (Meissn.) surface exudate against Aedes aegypti larvae
Nicholas K. Gikonyo, Richard W. Mwangi, J. Ogweno Midiwo
Journal:

Insect Science and Its Application / Volume 18 / Issue 3 / September 1998

Published online by Cambridge University Press:

19 September 2011, pp. 229-234

Print publication:

September 1998
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Laboratory studies were conducted to assess the toxicity and growth-inhibitory activity against Aedes aegypti larvae, of the crude acetone extracts of Polygonum senegalense (Meissn.) leaves, its flavonoid component 2',6'-dihydroxy-4'-methoxydihydrochalcone and the internal tissue flavanol quercetin. The first two showed significantly high insecticidal and growth-inhibitory activity even at low concentrations, whereas quercetin was toxic only at concentrations above 7μg/ml.