In this article we will discuss about:- 1. Concept of Host Plant Resistance 2. Types of Host Plant Resistance 3. Mechanism 4. Genetics 5. Durable Plant Resistance 6. Induced Plant Resistance 7. Economic Impact. Concept of Host Plant Resistance: A plant is neither susceptible to all the phytophagous insects nor any insect species is the pest of all the species [...]
The most desirable form of insect resistance is one which is stable across location and seasons. However, the level and nature of insect resistance are influenced by several climatic and edaphic factors. Several environmental factors are known to influence the inherited characters, especially those involving physiological characteristics of crop plants. Following are the factors which affects the host plant resistance: [...]
The first requirement of a breeding programme is the need and potential for plant resistance to insects within the pest management and cropping system. This will determine the type and level of resistance required, which in turn, will depend upon the pest biology and the production and commercial requirements for the crop. For example, if the insect feeds directly on [...]