12th botany neet school

Aims of plant breeding

Aims of plant breeding

The first and foremost aim in plant breeding is to create useful variation in the crop plant. This can be achieved by the following measures.

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1. Bringing wild food crops to cultivation. (wheat, oats and many cereal crops were once wild plants which had now been domesticated).

2. Obtaining genes from desirable plants or related species (eg. as seeds from various parts of the world).

3. Introduction of plants from nearby regions or even from other
countries for improvement of the crop. (eg. cauliflower, tomato,
potato and soyabeans).

4. By employing certain plant breeding techniques, new varieties are
developed. eg. maize, sorghum, cotton and sunflower.

5. Auto and Allopolyploid breeding.

6. By inducing mutations using physical and chemical mutagens.

7. Production of haploids by the application of plant tissue culture of
anther and ovary.

8. Improvement of nutritional quality by genetic engineering (eg.
Fortified rice – iron rich rice and carotene rich rice).

9. Development of disease, drought and environmental stress resistant

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Other links 


Plant physiology – photosynthesis and its significance

BIOLOGY IN HUMAN WELFARE Introduction & Food production

Aspects of plant breeding and Types

Hybridization in plant breeding

Polyploid breeding, Mutation breeding, Breeding for disease resistance

Genetic engineering, Improved varieties, Role of biofertilizers

Green manuring, Mycorrhiza as biofertilizer

Benefits from biofertilizers

Crop diseases and their control, Rice – Oryza sativa

Groundnut or peanut – Arachis hypogea

Citrus canker, Tungro disease of rice

Biocontrol of insect pests Bacterial pesticides

Genetically modified food

Bio war, Genetically Modified Organisms (GMO) in biological warfare

Biopiracy, Bioresources, Biomolecules, Biopatent, Biotechnology

Sustainable agriculture

Medicinal plants including microbes

Commonly Available Medicinal Plants

Microbes in medicine

Economic importance of Food plant Rice

Oil plant Groundnut Economic importance

Fibre plant – Cotton Economic importance

Timber yielding plant Teak Economic importance

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