Yield of inbred A is 40 q/ha, inbred B is 20 q/ha, the check hybrid is 45 q/ha and the hybrid yield is 50 q/ha. Find out heterobeltiosis (%).
Show Hint
- 25%
- 11.1%
- 66.6%
- 50%
The Correct Option is A
Solution and Explanation
Heterobeltiosis measures the percentage superiority of the $F_1$ hybrid over the better-performing parent (BP).
Step 2: Key Formula or Approach:
Given:
- Yield of inbred parent $A = 40\,\text{q/ha}$
- Yield of inbred parent $B = 20\,\text{q/ha}$
- Better parent ($BP$) yield $= \max(40, 20) = 40\,\text{q/ha}$
- Yield of $F_1$ hybrid $= 50\,\text{q/ha}$
Formula for heterobeltiosis:
\[\text{Heterobeltiosis (\%)} = \frac{F_1 - BP}{BP} \times 100\]
Step 3: Detailed Explanation:
Substituting the values:
\[\text{Heterobeltiosis} = \frac{50 - 40}{40} \times 100 = \frac{10}{40} \times 100 = 25\%\]
Step 4: Final Answer:
Therefore, the heterobeltiosis is 25%.
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