Plant Breeding
Chapter Name : Strategies For Enhancement In Food Production |
Sub Topic Code : 103_12_09_02_02 |
Topic Name : Plant Breeding |
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Sub Topic Name : Plant Breeding For Disease Resistance |
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Introduction
Plant breeding for disease resistance is carried out to increase the resistance genes in host plants for prevention from diseases.
Pre-Requisites:
Plant breeding techniques
Activity:
Find the various diseases that plants suffer from and how can these plants be prevented from these diseases.
Real Life Question:
Humans suffer from a variety of diseases. Do plants suffer from any such diseases?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Plant diseases | Plants are affected by a variety of fungal, viral and bacterial diseases. Some of the diseases caused are late blight of potato, tobacco mosaic virus, etc |
| Conventional plant breeding | Involves hybridization and selection. This method is often constrained by the availability of limited number of disease resistance genes. |
| Mutation breeding | Process by which genetic variations are created through changes in the base sequence within genes. Induced by treatment with chemicals or radiation. Resistant genes are transferred into high yielding varieties of crops by sexual hybridisation. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Encyclopedia and internet. |
Places to visit :
Some farms having diseased crop plants.
Practical examples around us
| Examples | Explainations |
|---|---|
| Plant Breeding | Plant breeding for disease resistance has reduced the losses of crops due to some serious diseases. |
What you learn in Theory:
Plant breeding for disease resistance is carried out by conventional breeding and mutation breeding.
What you learn in Practice:
How plants are made resistant to various diseases.