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प्रश्न
In the area of plant breeding, it is important not only to preserve the seeds of the variety being cultivated, but also to preserve all its wild relatives. Explain with a suitable example.
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उत्तर
Preservation of the seeds of the cultivated variety and its wild varieties helps in making a good germplasm collection. Many high-yielding and disease-resistant varieties of wheat, rice and maize have been produced by selective breeding of plants. This could be possible because of a better germplasm collection.
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संबंधित प्रश्न
What is ‘biofortification’?
Identify ‘a’, ‘b’ and ‘c’ in the following table:
| S. No. | Crop | Variety | Insect Pests |
| 1. | Brassica | Pusa Gaurav | ‘a’ |
| 2. | Flat bean | Pusa Sem 2 Pusa sem 3 |
‘b’ |
| 3. | ‘c’ | Pusa Sawani Pusa A-4 |
Shoot and fruit borer |
How has the breeding programme helped in improving the public nutritional health? State two examples in support of your answer.
Name the following:
The semi-dwarf variety of wheat is high-yielding and disease-resistant.
State one characteristic of millets that has been improved as a result of hybrid breeding so as to produce high yielding millet crops.
What is Biofortification? Explain selective breeding with suitable example.
While studying the history of the domestication of various cultivated plants _______ were recognized earlier.
Importing better varieties and plants from outside and acclimatizing them to the local environment is called
Which method of plant breeding has been used to develop a powdery mildew-resistant variety of moong beans?
Breeding of crops with high levels of minerals:
Mechanism of fast Speciation in crop plants is ______.
If a diploid cell is treated with colchicine then it becomes:
Match the columns-
| Column A | Column B | ||
| A. | Kalyan Sona | 1. | Rice |
| B. | Pusa sawani | 2. | Wheat |
| C. | IR - 8 | 3. | Okra |
Use of certain chemicals and radiation to change the base sequences of genes of crop plants is termed ______.
Lysine and tryptophan are ______.
33 percent of India’s Gross Domestic Product comes from ______.
A collection of all the alleles of all the genes of a crop plant is called ______.
What is meant by germplasm collection?
How the resistance in crops can be developed?
Bioforified crops are ______.
