Advertisements
Advertisements
प्रश्न
(a) Name the tropical sugar cane variety grown in South India. How has it helped in improving the sugar cane quality grown in North India?
(b) Identify 'a', 'b' and 'c' in the following table:
| 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 |
उत्तर
(i) The tropical sugarcane variety grown in Southern India is Saccharum officinarum which has a thicker stem and high sugar content; however, it cannot grow in Northern India. Saccharum barberi is a natively grown in Northern India.
These two varieties were crossed to get the desirable qualities of both (higher sugar content, thicker stem and the ability to grow in Northern India).
(ii)
| No. | Crop | Variety | Insect Pests |
| 1. | Brassica | Pusa Gaurav | Aphids |
| 2. | Flat bean | Pusa Sem 2 Pusa sem 3 |
Jassids and fruit borer |
| 3. | Okra (Bhindi) | Pusa Sawani Pusa A-4 |
Shoot and fruit borer |
APPEARS IN
संबंधित प्रश्न
Name the high-yielding semi-dwarf varieties of wheat selected and introduced in India in 1963.
How has the mutation breeding helped in improving crop varieties? Give one example where this technique has helped.
What is emasculation?
While studying the history of the domestication of various cultivated plants _______ were recognized earlier.
The thalamus contributes to the fruit formation in ______
Sonora – 64 is a variety of ______.
Which of the following is not an objective of Biofortification in crops?
Give few examples of biofortified crops. What benefits do they offer to the society?
You are a Botanist working in the area of plant breeding. Describe the various steps that you will undertake to release a new variety.
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.
