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प्रश्न
What is emasculation? Why and when is it done?
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उत्तर
Removal of anthers from bisexual flower of a female parent is called Emasculation. It is done to prevent self-pollination and it is done when the flower is in bud condition.
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संबंधित प्रश्न
Write a short note on ‘Mutational breeding’.
Give reason :
Emasculation is done in a flower which is selected as female parent.
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 mutation breeding helped in improving the production of mung bean crop?
Give the names of ‘two’ insect-resistant crop varieties.
What are analogous organs? Describe with one example from the plant kingdom.
What are components of water potential? Explain
Definition and importance of Imbibition
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While studying the history of the domestication of various cultivated plants _______ were recognized earlier.
Explain the best-suited type followed by plant breeders at present?
Several South Indian states raise 2-3 crops of rice annually. The agronomic feature that makes this possible is because of ______.
Which one of the following combination would a sugarcane farmer look for in the sugarcane crop?
The term ‘desirable trait’ can mean different things for different plants. Justify the statement with suitable examples.
It is said, that diseases are spreading faster due to globalisation and increased movement of people. Justify the statement taking the example of H5N1 virus.
Define the term ‘stress’ for plants. Discuss briefly the two types of stress encountered by plants.
Give few examples of biofortified crops. What benefits do they offer to the society?
Write two varieties of sugarcane having high sugar content.
Bioforified crops are ______.
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.
