Study the following columns.
columns - I |
columns - II |
A. Usage of bisexual |
1. Coal selection flower as female parents |
B. Incorporation of several desirable characters into a single variety |
2. Pure line selection |
C. Ex plotting hybrid vigour for many generations |
3. Emasculation |
D. Improving local varieties of self pollinated crop |
4. Hybridization |
|
5. Polyploidy breeding |
|
A |
B |
C |
D |
a |
4 |
5 |
3 |
1 |
b |
2 |
3 |
4 |
5 |
c |
3 |
4 |
1 |
2 |
d |
1 |
5 |
2 |
4 |