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प्रश्न
While studying the history of the domestication of various cultivated plants _______ were recognized earlier.
पर्याय
Centres of origin
Centres of domestication
Centres of hybrid
Centres of variation
उत्तर
While studying the history of the domestication of various cultivated plants Centres of origin were recognized earlier.
संबंधित प्रश्न
Name the high-yielding semi-dwarf varieties of wheat selected and introduced in India in 1963.
Give reason :
Emasculation is done in a flower which is selected as female parent.
What is ‘biofortification’?
Which steps would you follow to develop a new variety of crop plant by selective breeding?
Suggest four important steps to produce a disease resistant plant through conventional plant breeding technology.
(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 |
How has the mutation breeding helped in improving crop varieties? Give one example where this technique has helped.
Briefly describe various steps involved in plant breeding.
What are transgenic plants? Explain with any two examples
In an agricultural field there is a prevalence of the following organisms and crop diseases which are affecting the crop yield badly:
(a) White rust
(b) Leaf and stripe rust
(c) Black rot
(d) Jussids
Recommend the varieties of crops the farmers should grow to get rid of the existing problem and thus improve the crop yiel.
Define the term water potential.
Definition and importance of Imbibition
Which one of the following crop varieties correct matches with its resistance to disease?
| Variety | Resistance to disease |
| a) Pusa Komal | Bacterial blight |
| b) Pusa Sadabahar | White rust |
| c) Pusa Shubhra | Chilli mosaic virus |
| d) Brassica | Pusa swarnim |
The science of changing and improving the heredity of plants is called ______
The biggest constraint of plant breeding is:
The plant which is used for Studying hybrid vigour or heterocyst:
The biggest constraint of plant breeding is ______.
The agriculture sector of India employs about ______.
Life style diseases are increasing alarmingly in India. We are also dealing with large scale malnutrition in the population. Is there any method by which we can address both of these problems together?
Mutations are beneficial for plant breeding. Taking an example, justify the statement.
