Study the following columns. columns - I columns - II A. Usage of bisexual 1. Coal selection flower as female parents
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 |
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