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Influence of host plants on the susceptibility of Myzus persicae (Sulz.) to certain insecticides
Published online by Cambridge University Press: 19 September 2011
Abstract
The influence of the host plants tobacco, chilli and brinjal on the susceptibility of Myzus persicae (Sulz.) to five OP insecticides was assessed. The order of toxicity of the insecticides to the aphids on tobacco was monocrotophos > demeton methyl > dimethoate > methamidophos > acephate, on chilli; methamidophos = monocrotophos > demeton methyl = acephate > dimethoate and on brinjal, methamidophos = monocrotophos > acephate > demeton methyl = dimethoate. Among the five insecticides, monocrotophos had the highest inhibitory potency in vitro as indicated by I50 and ka values, followed by demeton methyl, dimethoate, methamidophos and acephate. Electrophoretograms of homogenates of aphids adopted to chilli and brinjal showed a higher activity of the detoxicating enzyme carboxylesterase than found in aphids on tobacco.
Résumé
L' influence des hôtes plantes de tobaco, piment, brinjal en susceptibilité de Myzus persicae (Sulz.) à cinq des insecticides était assimilée. L'ordre de toxicité des insecticides des aphids en tobaco était monocrotophos > demeton-methyl > dimethoate > methamidophos > acephate, en piment; methamidophos = monocrotophos > demeton methyl = acephate > dimethoate et en brinjal methamidophos = monocrotophos > acephate > demeton methyl = dimethoate. Larmi les cinq insecticides monocrotophos avait la plus forte decrorssante potencité en vitro. Comme indiqué par I50 et ka valeur suivie par methyl-demeton, dimethoate, methamidophos et acephate. Electrogrammes de homogenates de aphid en piment et brinjal adaptés aphid viriants montrait plus forte acti vile de detoxication enzymes carboxylesterase que celui de tobacco aphid variant.
- Type
- Research Articles
- Information
- International Journal of Tropical Insect Science , Volume 13 , Issue 1 , February 1992 , pp. 79 - 86
- Copyright
- Copyright © ICIPE 1992
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