Acta Entomologica Sinica (1998) 41, 243-249

Lijun Ru, Changhui Rui, Xianlin Fan, Jianzhou Zhao and Cen Wei (1998)
[Realized heritability analysis of resistance to single and multiple insecticides in Lipaphis erysimi (Kaltenbach) and Helicoverpa armigera (Hubner)]
Acta Entomologica Sinica 41 (3), 243-249
Abstract: Realized heritabilities (h²) of resistance to F-M mixture (fenvalerate + malathion) and its components in Lipaphis erysimi (Kaltenbach ) and Helicoverpa armigera (Hübner) and to CPM mixture (cyhalothrin+parathion -methyl+methomyl) and its components in Helicoverpa armigera were estimated by threshold trait analysis. The values of h² to mixtures in Lipaphis erysimi and Helicoverpa armigera were smaller than that of its components significantly, and the order was: pyrethroid > carbamate > organophosphorus > mixture. The application lifetime of the two.mixtures was longer than the total of its components' lifetimes respectively, resistance risk was: pyrethroid > carbamate > organophosphorus > mixture. Both F-M mixture and CPM mixture could delay resistance development, and CPM mixture was better in delaying resistance development in Helicoverpa armigera.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Helicoverpa armigera
	Lipaphis erysimi