Abstract: This invention relates to the use of a combination of different proteins insecticidal to Helicoverpa zeaor Helicoverpa armigerain an insect resistance management process, wherein such proteins are: a) a Cry2A protein such as Cry2Aa, Cry2Ab, or Cry2Ae and b) a Cry1A, Cry1F or VIP3A protein, particularly wherein such proteins binds saturably to the insect midgut membrane of Helicoverpa zeaor Helicoverpa armigera, as well as plants and seeds expressing such combination of proteins, which are used to delay or prevent the development of resistance in populations of such insect species.

Abstract: This invention relates to a process for preventing or delaying the development of resistance in populations of Spodoptera frugiperda to transgenic plants expressing a Cry1A and/or a Cry1F protein, comprising providing such plants also with a gene expressing a VIP3 protein, as well as to related uses and methods, such as methods for the production of transgenic plants comprising two different insecticidal proteins that show no competition for binding to the binding sites in the midgut brush border of Spodoptera frugiperda larvae.

Abstract: This invention relates to the use of a combination of different proteins insecticidal to Helicoverpa zea or Helicoverpa armigerain an insect resistance management process, wherein such proteins are: a) a Cry2A protein such as Cry2Aa, Cry2Ab, or Cry2Ae and b) a Cry1A, Cry1F or VIP3A protein, particularly wherein such proteins binds saturably to the insect midgut membrane of Helicoverpa zea or Helicoverpa armigera, as well as plants and seeds expressing such combination of proteins, which are used to delay or prevent the development of resistance in populations of such insect species.