Sensitive Analysis of Prongenys of Different Resistant Strains in Plutella xylostella

Using selection of deltamethtin-resistant strain and dimpehypo-resistant strain in Plutella xylostella as parents,reciprocal hybridzations,toxicity test on deltamethtin-resistantd,dimpehypo-resistant and their prongenys were measured.Susceptibility of Plutella xylostella to deltamethtin and dimpehypo was tested,respectively.The results showed that: two population of progenys of reciprocal hybridzations were insentitive to deltamethtin and dimpehypo;there was no significant between the progeny F1 and parents;two population of progenys of reciprocal hybridzations had a significant rising trend in the successive generations.