Acta Entomologica Sinica (2000) 43, 255-263

Teng-Wu Li, Xi-Wu Gao, Bing-Zong Zheng and Pei Liang (2000)
Study on genetics of avermectins resistance and population fitness in Plutella xylostella
Acta Entomologica Sinica 43 (3), 255-263
Abstract: The genetics of resistance to avermectins (AVMs) and the relative fitness between resistant and susceptible strains to AVMs in diamondback moth (DBM), Plutella xylostella, were investigated during 1997-1999. The methods of cross and back-cross between AVMs-selected resistance strain and isogenic susceptible strain were used for exploring the inheritance mode of resistance to AVMs in DBM. The results showed that the degree of dominance of F_RS and F_SR were -0.64 and -0. 52,. respectively. It suggested that the resistance of DBM to AVMs was autosomal, incompletely recessive and probably polygenic confirmed by Chi² test. The activities of acetylcholinesterase, carboxylesterase and glutathione S-transferases of F₁ hybrids were lower than that of resistance parental strain, and continuously declined in F₂ and BC. The resistant strain possessed 0.84 of fitness value relative to the isogenic susceptible strain.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Xi-Wu Gao, Pei Liang

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Plutella xylostella