Plant Breeding
Chapter Name : Strategies For Enhancement In Food Production |
Sub Topic Code : 103_12_09_02_03 |
Topic Name : Plant Breeding |
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Sub Topic Name : Plant Breeding For Developing Resistance To Insect Pests |
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Introduction
One of the major causes for large scale destruction of crop plant and crop produce is insect and pest infestation.
Pre-Requisites:
Plant breeding techniques.
Activity:
Find the variety of insects and pests that infest the crops and the particular crop plant they infest.
Real Life Question:
Do insects cause diseases or infect the plants?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Insect resistance in host plants | Due to morphological, biochemical or physiological characteristics. |
| Resistance characteristics | Hairy leaves are associated with resistance to insect pests in several plants 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. |
| Breeding techniques | Similar to those for any other agronomic trait such as yield or quality. Sources of resistance genes may be cultivated varieties, germplasm collections of the crop or wild relatives. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Encyclopedia and internet. |
Places to visit :
Farms infested by pests to observe damaged crops.
Practical examples around us
| Examples | Explainations |
|---|---|
| Plant Breeding | Plant breeding for insect resistance has decreased the losses of crop plants by huge amount. |
What you learn in Theory:
Various resistance characters that helps plant to prevent infestation by pests and insects.
What you learn in Practice:
How plant breeding for developing resistance to insects and pests is carried out.