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Plant Breeding for Disease and Pest Resistance - Practice Questions & MCQ

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET

Quick Facts

  • Plant Breeding for Developing Resistance to Insect Pests is considered one of the most asked concept.

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Plant Breeding for Developing Resistance to Insect Pests
  • Another major cause for large scale destruction of crop plant and crop produce is insect and pest infestation. 
  • Insect resistance in host crop plants may be due to morphological, biochemical or physiological characteristics.
  • Hairy leaves in several plants are associated with resistance to insect pests, e.g, resistance to jassids in cotton and cereal leaf beetle in wheat. 
  • In wheat, solid stems lead to non-preference by the stem sawfly and smooth leaved and nectar-less cotton varieties do not attract bollworms. 
  • High aspartic acid, low nitrogen and sugar content in maize leads to resistance to maize stem borers.
  • Breeding methods for insect pest resistance involve the same steps as those for any other agronomic trait such as yield or quality and are as discussed in conventional breeding.
  • Some released crop varieties bred by hybridisation and selection, for insect pest resistance are given in Table below:
     

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