SODIUM ION CHANNEL ALLELES IN WILD AND MUTANT TOBACCO BUDWORM(Heliothis virescens F.)

摘要

A cross of two strains of Heliothis virescens (tobacco budworm), each breeding pure for a different yellow-eyed mutant (wildtype is grey-eyed) gave 6 black-eyed progeny among 500 progeny. From the black-eyed progeny were descended many linesin which several other mutant phenotypes were observed. Exposure to 5Fg cypermethrin per vial killed 46.1% in the seventhgeneration descendants of that cross, with lines D38, D41 and D63 resistant with less than 17% mortality. For the domainHpy, we found two new Hpy alleles (Hpy51 and Hpy52) in eye mutant lines. Frequency of new alleles was 0.85. There are nonew Hpy alleles in D8, D28, and, D29 lines which are susceptible type to cypermethrin. For the domain IIS6 region in recentfield tobacco budworm samples (Wadmalaw2000), the frequencies of homozygotes (L/L), heterozygotes (L/H), andhomozygotes (H/H) were 0.44, 0, and 0.56 respectively without new Hpy alleles.