Question:
Which of the following is a Long Day onion variety?
Which of the following is a Long Day onion variety?
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Remember onion photoperiod response:
- Short day: Pusa Red, Pusa Sona, Pusa Madhvi, Nasik Red
- Intermediate day: N-2-4-1
- Long day: Spanish Brown, California Early, Up-To-Date
Bulb formation in onions is triggered by photoperiod.
- Short day: Pusa Red, Pusa Sona, Pusa Madhvi, Nasik Red
- Intermediate day: N-2-4-1
- Long day: Spanish Brown, California Early, Up-To-Date
Bulb formation in onions is triggered by photoperiod.
Updated On: Aug 19, 2026
- Pusa Red
- Pusa Sona
- Spanish Brown
- Pusa Madhvi
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
This question tests knowledge of onion varieties based on photoperiod response.
Step 2: Detailed Explanation:
Spanish Brown is a long day onion variety.
Long day onions:
- Require long daylength (\(>14\) hours) for bulb formation.
- Suitable for temperate regions (Northern parts of India).
- Grown in high altitude areas.
Other onion variety categories:
- Pusa Red (A): Short day variety.
- Pusa Sona (B): Short day variety.
- Pusa Madhvi (D): Short day variety.
Onion photoperiod classification:
- Short day (SD): Bulb formation with 10-12 hours daylength.
- Intermediate day (ID): Bulb formation with 12-14 hours.
- Long day (LD): Bulb formation with 14-16 hours daylength.
Thus, Spanish Brown is a long day onion variety.
Step 3: Final Answer:
Thus, the Long Day onion variety is Spanish Brown, which corresponds to option (C).
[0.5cm]
This question tests knowledge of onion varieties based on photoperiod response.
Step 2: Detailed Explanation:
Spanish Brown is a long day onion variety.
Long day onions:
- Require long daylength (\(>14\) hours) for bulb formation.
- Suitable for temperate regions (Northern parts of India).
- Grown in high altitude areas.
Other onion variety categories:
- Pusa Red (A): Short day variety.
- Pusa Sona (B): Short day variety.
- Pusa Madhvi (D): Short day variety.
Onion photoperiod classification:
- Short day (SD): Bulb formation with 10-12 hours daylength.
- Intermediate day (ID): Bulb formation with 12-14 hours.
- Long day (LD): Bulb formation with 14-16 hours daylength.
Thus, Spanish Brown is a long day onion variety.
Step 3: Final Answer:
Thus, the Long Day onion variety is Spanish Brown, which corresponds to option (C).
[0.5cm]
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