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प्रश्न
Which steps would you follow to develop a new variety of crop plant by selective breeding?
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
Name the high-yielding semi-dwarf varieties of wheat selected and introduced in India in 1963.
What is emasculation?
Define the term water potential.
Explain selective breeding. Give any 'two' examples and their nutrients obtained by selective breeding.
While studying the history of the domestication of various cultivated plants _______ were recognized earlier.
Column - I contains names of host plant while Column - II contains names of viral dieases. Find the correct option.
| Column-I | Column-II | ||
| (I) | Banana | (p) | little leaf |
| (II) | Sugarcane | (q) | bunchy top |
| (III) | Papaya | (r) | leaf roll |
| (IV) | Brinjal | (s) | grassy shoot |
| (t) | leaf curl |
Polyploidy leads to the rapid formation of new species because:
The biggest constraint of plant breeding is ______.
Mutations are beneficial for plant breeding. Taking an example, justify the statement.
Name two better yielding varieties of rice developed in India.
