Limitations of Traditional Hybridization

Q. A researcher wants to make a hybrid variety of a plant. Which among the following criteria he may consider to make the hybrid more vigorous?
1. Increase in quality
2. Increase in yield
3. Increase in size and number
4. Increase in biological efficiency
5. Greater resistance to disease and pest
6. Greater ecological amplitude/adaptivity

1. 1 and 2 only
2. 1, 2, and 3 only
3. 4, 5 and 6 only
4. 1, 2, 3, 4, 5, and 6

Q. In high yielding hybrid crop varieties to exploit hybrid vigour, the farmers need to purchase fresh hybrid seed every year because

1. They are not allowed to grow their own seed.
2. Hybrid vigour is lost due to inbreeding depression.
3. It is cheaper to purchase fresh seed.
4. Government has accepted Dunkel's proposals.

Q. Which of the following is/are a limitation to traditional plant breeding

1. Creating hybrids combining the desirable agronomic traits from two different species
2. Creating hybrids combining the agronomic traits of a domestic and wild variety of the same species.
3. All of the above
4. Creating hybrids combining the desirabale agronomic traits of the same species

Q. Mule is a product of :

1. Breeding
2. Mutation
3. Recombination
4. Interspecific hybridization

Q. Which of the following is/are a limitation to traditional plant breeding

1. Creating hybrids combining the desirable agronomic traits from two different species
2. Creating hybrids combining the desirabale agronomic traits of the same species
3. Creating hybrids combining the agronomic traits of a domestic and wild variety of the same species.
4. All of the above

Q. Which of the following techniques use to explore the plant nutrient deficiency ?

1. Croprotation
2. Hydroponics
3. Sun exposure
4. Hybridization

Q. Which of the following is/are a limitation to traditional plant breeding

1. Creating hybrids combining the desirable agronomic traits from two different species
2. Creating hybrids combining the desirabale agronomic traits of the same species
3. Creating hybrids combining the agronomic traits of a domestic and wild variety of the same species.
4. All of the above