| List-I | List II | ||
| A | Usage of bisexual | 1 | Clonal selection |
| B | Flowers of female parents | 2 | Pure line selection |
| C | Incorporation of several desirable characters into a single variety | 3 | Emasculation |
| D | Exploiting hybrid vigour for many generations | 4 | Hybridization |
| Improving local varieties of self -pollinated crop | 5 | Polyploidy breeding |
A) A-4 B-5 C-3 D-1
B) A-2 B-3 C-4 D-5
C) A-3 B-4 C-1 D-2
D) A-1 B-5 C-2 D-4
Correct Answer: C
Solution :
Emasculation involves removal of stamens or killing of pollen grains of a flower without affecting in any, may the female reproductive organs. Thus, it makes possible the use of the bisexual flowers as female parents. The process of hybridization aims to combination breeding, transgressive breeding or hybrid varieties. The main aim of combination breeding is transfer of one or more desired characters into a single variety from another variety. Through clonal selection disease free, high yielding clones may be selected, further evaluated and multiplied as a variety, thus exploiting hybrid vigour for many generations. Pure line selection is the favourite method for the improvement of local self-pollinating varieties that have considerable genetic variability.
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