To produce a variety having all the desirable characters of two varieties without much segregation, the method adopted is:
Show Hint
- Selfing: Fixes desirable traits.
- Pure line selection: Selects from homozygous lines.
- Random mating: Maintains heterozygosity.
- Pure line selection
- Random mating in isolation
- Selfing in isolation
- Top crossing
The Correct Option is C
Solution and Explanation
This question tests knowledge of breeding methods to fix desirable traits.
Step 2: Detailed Explanation:
To produce a variety with all desirable characters of two varieties without much segregation, the method adopted is selfing in isolation (C).
Selfing helps in fixing desirable traits and reducing segregation.
By selfing over several generations, homozygous lines are developed.
Other methods:
- Pure line selection (A): Selection from a single homozygous line.
- Random mating in isolation (B): Used to develop synthetics.
- Top crossing (D): Used to test combining ability.
Thus, selfing in isolation is the correct method.
Step 3: Final Answer:
Thus, selfing in isolation is the method adopted, which corresponds to option (C).
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