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: [...]
A number of plant characteristics are known to render the cultivars less suitable or unsuitable for feeding, oviposition and development of insect pests. Broadly, these characteristics can be classified into two categories, i.e., biophysical and biochemical. 1. Biophysical Bases: The plant resistance is controlled by several morphological factors like remote factors, e.g., colour, shape, size, etc., and close range or [...]