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प्रश्न
Suggest some of the features of plants that will prevent insect and pest infestation
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उत्तर
Some of the features of plants that prevent insects and pest infestation are as follows:
- Hairy leaves are supposed to resist pest attacks, e.g. jassids do not attack cotton and leaf beetle does not attack wheat.
- The solid stem of wheat makes it resistant to stem sawflies.
- Nectar-less cotton varieties do not attract bollworms.
- High aspartic acid, low nitrogen and sugar content in maize lead to resistance to maize stem borers.
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संबंधित प्रश्न
What is plant breeding?
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 |
How has mutation breeding helped in improving the production of mung bean crop?
In Brassica (rapeseed, mustard)........................ varietys is resistant to Aphids.
(a) Pusa A-4
(b) Pusa Gaurav
(c) Pusa Sawni
(d) . Pusa Shubra
What are transgenic plants? Explain with any two examples
State one characteristic of millets that has been improved as a result of hybrid breeding so as to produce high yielding millet crops.
Give the scientific term used for the preservation of germplasm at a very low temperature.
Give an account of mutation breeding with examples.
Wheat -Atlas 66 has high contents of ______.
The plant which is used for Studying hybrid vigour or heterocyst:
The biggest constraint of plant breeding is ______.
Match the columns-
| Column A | Column B | ||
| A. | Kalyan Sona | 1. | Rice |
| B. | Pusa sawani | 2. | Wheat |
| C. | IR - 8 | 3. | Okra |
Which one of the following combination would a sugarcane farmer look for in the sugarcane crop?
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.
The term ‘desirable trait’ can mean different things for different plants. Justify the statement with suitable examples.
What is meant by germplasm collection?
Discuss the importance of testing of new plant varieties in a geographically vast country like India.
You are a Botanist working in the area of plant breeding. Describe the various steps that you will undertake to release a new variety.
Name two better yielding varieties of rice developed in India.
Bioforified crops are ______.
