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Esterase variation and organophospherous resistance in cotton aphid, Aphis gossypii (Glover) [electronic resource].

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Homam, H. B

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Language: English Summary language: Arabic Description: p.465-471Other title:

التغيرات الانزيمية و المقاومة للمركبات الفوسفورية العضوية في من القطن [Added title page title]

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Mansoura university journal of agricultural sciences, 2006 v. 31 (1) [electronic resource].

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In: Mansoura Unviersity Journal of Agricultural Sciences 2006.v.31(1)Summary: Cotton aphid, Aphis gossypii (Glover) adults were bioassed with Malathion organophosphorus (OP) insecticide. The roles of carboxyesterase activity in resistance to Ops are discussed along 15 generations. Five substrates (a-naphthyl acetate, Indoxyl acetate, Lurate actate, Myristate acetate and Acetylthiocholine iodide) were screened. The results showed that, esterase activity, measured by using 0naphthyl acetate and 1.1doxyl acetate can detect the level of OP resistance and used as a marker for OP resistance in field population. Bands No.1, 3 and 6 were classified as carboxyesterase in resistant strain. The diagnostic resistance-specific esterase bands have been used as a resistance marker to detect the population resistance in field for enhancing the control strategy.

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Cotton aphid, Aphis gossypii (Glover) adults were bioassed with Malathion organophosphorus (OP) insecticide. The roles of carboxyesterase activity in resistance to Ops are discussed along 15 generations. Five substrates (a-naphthyl acetate, Indoxyl acetate, Lurate actate, Myristate acetate and Acetylthiocholine iodide) were screened. The results showed that, esterase activity, measured by using 0naphthyl acetate and 1.1doxyl acetate can detect the level of OP resistance and used as a marker for OP resistance in field population. Bands No.1, 3 and 6 were classified as carboxyesterase in resistant strain. The diagnostic resistance-specific esterase bands have been used as a resistance marker to detect the population resistance in field for enhancing the control strategy.

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