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प्रश्न
Which steps would you follow to develop a new variety of crop plant by selective breeding?
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उत्तर
- In selective breeding method, plant breeders search seed or germplasm banks for existing varieties of crops which are naturally high in nutrients.
- Then, they crossbreed these high-nutrient varieties with high-yielding varieties of crops, to provide a seeds with high yields and increased nutritional value.
- Crops with sufficient amounts of nutrients must be bred to have a measurable positive impact on human health.
- Such crops must be developed with the involvement of nutritionists and should have extra nutrients, as storage, processing and cooking of the food affects their available nutrient levels
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संबंधित प्रश्न
Identify 'A', 'B', 'C' and 'D' in the given table.
| Crop | Variety | Resistance to disease |
| A | Himgiri | Leaf rust |
| Cauliflower | Pusa Shubhra | B |
| Brassica | Pusa Swarnim | C |
| Cowpea | D | Bacterial blight |
Enumerate four objectives for improving the nutritional quality of different crops for the health benefits of the human population by the process of "Biofortification".
Explain selective breeding. Give any 'two' examples and their nutrients obtained by selective breeding.
Explain the best-suited type followed by plant breeders at present?
Breeding of crops with high levels of minerals:
Mechanism of fast Speciation in crop plants is ______.
Which one of the following is not a fungal disease?
Mutations are beneficial for plant breeding. Taking an example, justify the statement.
What are A, B in the following table:
| Transgenic Crop | Substance | Transgene | |
| (i) | A | Flavonoids | Chalone isomerase |
| (ii) | Rice | B | Ferritin |
Give a reason for the following:
The continuous inbreeding of crops may lead to reduced fertility and productivity. However, the self-pollinated crops do not show the ill-effects of inbreeding.
