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1Pest ResistanceLecture 8Wednesday,November 05, 2008Resistance to Plant Pests: Natural Plant Encoded Pest ResistanceCore Concepts:Introduction: The insect problem.Ubiquity and abundance of insectsChemical pesticidesCost and toxicitySecondary infestationPesticide residue – ‘Silent spring’Biological controlBiopesticidesMicrobial pesticidesUbiquity and abundance of insects:Insects are earths most versatile organisms, ~51% of all species of living things are insects and ~78% of all species of animals are insects. Insects need C&N to survive and multiply, therefore, every living thing is potentially food and shelter for insects. However, in spite of the vast abundance of insects we still have plants and other living things. This reality indicates the presence of genetic mechanisms in the environment to control insect populations - a balance of power.Chemical vs Biological ControlPlant based Insect Resistance MechanismsInsecticidal Proteins
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