Question

What are the genotypes that will be included in the trial for the estimation of heterobeltiosis?

• A. F1 hybrid developed and the parental lines
• B. F1 hybrid and commercially released hybrid (check)
• C. F1 hybrid developed only
• D. Parental lines and commercially released hybrid (check)

Hint:

Heterosis types:
- Heterobeltiosis: F1 over better parent.
- Standard heterosis: F1 over standard check.
- Mid-parent heterosis: F1 over average of parents.

Answer 1

The Correct Option is A

Step 1: Understanding the Question:
This question tests knowledge of heterobeltiosis (better parent heterosis).

Step 2: Detailed Explanation:
Heterobeltiosis is the superiority of the F1 hybrid over the better parent.
To estimate heterobeltiosis, the F1 hybrid developed and the parental lines must be included in the trial.
The comparison is made between the F1 hybrid and the better parent.
Other options:
- F1 hybrid and commercially released hybrid (check) (B): For standard heterosis.
- F1 hybrid only (C): Cannot estimate heterobeltiosis.
- Parental lines only (D): Cannot estimate heterobeltiosis.
Thus, the F1 hybrid and parental lines are included.

Step 3: Final Answer:
Thus, the genotypes included for heterobeltiosis are the F1 hybrid and the parental lines, which corresponds to option (A).
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