›› 2001, Vol. 44 ›› Issue (2): 187-191.

• RESEARCH PAPERS • Previous Articles     Next Articles

Narrow sense heritability of cyhalothrin resistance and correlation betweenlarval resistance and its weight in Helicoverpa armigera

MENG Xiang-qing, RUI Chang-hui, ZHAO Jian-zhou, FAN Xian-lin, WEI Cen   

  • Online:2001-05-20 Published:2001-05-20

Abstract: The narrow sense heritabilities of larval tolerance to cyhalothrin and larval weight, and the genetic correlation between larval weight and tolerance to cyhalothrin in Helicoverpa armigera were evaluated using a half-sibling design of quantitative genetics methods. The results showed that narrow sense heritabilities were 0.2476±0.0248 for tolerance to cyhalothrin and 0.3613±0.1299 for larval weight in the cyhalothrin-resistant strain. The maternal factors did not associate with the resistance tolerance, but affected the larval weight. The genetic correlation between larval weight and the tolerance to cyhalothrin was significantly negative(ra=-0.3416±0.1185,P<0.01).

Key words: Helicoverpa armigera, cyhalothrin, resistance tolerance, narrow sense heritability