This will provide knowledge at the molecular level of how the insect overcomes resistance in wheat. Dissected alimentary tract and salivary glands of an Hessian fly larva. Salivary glands are the long filamentous structures going up. Large basal cells of the glands contain polytene chromosomes. In situ hybridization of cloned genomic DNA sequence to the polytene chromosomes of Hessian fly.
Arrows indicate the location of the hybridization location of the hybridization.
White and dark-eyed male and female Hessian flies. The white-eye trait in the insect is linked to virulence to resistance gene H13 and resistance gene H9 in wheat. An intact mariner transposable element has been identified from the Hessian fly. Insertion sites within the genome of the insect and biological activity are being investigated. A conserved sequence has been identified near the 5' end of the mariner element.