Advertisements
Advertisements
Question
Explain the best-suited type followed by plant breeders at present?
Solution
Mutation breeding represents a new method of conventional breeding procedures as they have the advantage of improving the defect without losing an agronomic and quality character in agriculture and crop improvement. Mutation means the sudden heritable changes in the genotype or phenotype of an organism. Gene mutations are of considerable importance in plant breeding as they provide essential inputs for evolution as well as for recombination and selection. It is the only method for improving seedless crops.
RELATED QUESTIONS
Describe the mass flow hypothesis for translocation of organic solutes (food) in plants.
Answer the following question.
How did plant breeding techniques help north Indian farmers to develop cane with desired characters?
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 |
Animal husbandry and plant breeding programmes are the examples of:
If a diploid cell is treated with colchicine then it becomes:
The plant which is used for Studying hybrid vigour or heterocyst:
Which one of the following pathogens causes cancer disease?
Which of the following is not an objective of Biofortification in crops?
Sonalika and Kalyan Sona are varieties of ______.
Lysine and tryptophan are ______.
A collection of all the alleles of all the genes of a crop plant is called ______.
Name a man-made cereal? Trace how it was developed and where is it used?
What is meant by ‘hidden hunger’?
Discuss the two main limitations of plant hybridization programme.
Name the improved characteristics of wheat that helped India to achieve green revolution.
Give few examples of biofortified crops. What benefits do they offer to the society?
Write two varieties of sugarcane having high sugar content.
What are A, B in the following table:
| Transgenic Crop | Substance | Transgene | |
| (i) | A | Flavonoids | Chalone isomerase |
| (ii) | Rice | B | Ferritin |
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.
