Question:
The CMS system in Cole crops was originally transferred from
The CMS system in Cole crops was originally transferred from
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Remember CMS sources:
- Ogura CMS: From wild radish (Raphanus)
- Polima CMS: From Brassica rapa
- Samsons CMS: From Brassica oleracea
CMS systems are important for hybrid seed production in Cole crops and other vegetables.
- Ogura CMS: From wild radish (Raphanus)
- Polima CMS: From Brassica rapa
- Samsons CMS: From Brassica oleracea
CMS systems are important for hybrid seed production in Cole crops and other vegetables.
Updated On: Aug 19, 2026
- Wild turnip
- Wild radish
- Kale
- Wild mustard
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
This question tests knowledge of cytoplasmic male sterility (CMS) sources in crucifers.
Step 2: Detailed Explanation:
The CMS system in Cole crops (Brassica oleracea group) was originally transferred from Wild radish (Raphanus sativus).
This CMS source is known as the "Ogura" CMS system.
Key points:
- Ogura CMS was derived from wild radish (Raphanus).
- It has been successfully transferred to Brassica species.
- Widely used in hybrid seed production of cabbage, cauliflower, and other Cole crops.
- CMS system helps in producing F1 hybrids without manual emasculation.
Other CMS sources:
- Wild turnip (A): Not a source for Cole crops.
- Kale (C): A member of Cole crops, but not a CMS source.
- Wild mustard (D): A different CMS source (not for Cole crops).
Thus, wild radish is the source of CMS in Cole crops.
Step 3: Final Answer:
Thus, the CMS system in Cole crops was originally transferred from wild radish, which corresponds to option (B).
[0.5cm]
This question tests knowledge of cytoplasmic male sterility (CMS) sources in crucifers.
Step 2: Detailed Explanation:
The CMS system in Cole crops (Brassica oleracea group) was originally transferred from Wild radish (Raphanus sativus).
This CMS source is known as the "Ogura" CMS system.
Key points:
- Ogura CMS was derived from wild radish (Raphanus).
- It has been successfully transferred to Brassica species.
- Widely used in hybrid seed production of cabbage, cauliflower, and other Cole crops.
- CMS system helps in producing F1 hybrids without manual emasculation.
Other CMS sources:
- Wild turnip (A): Not a source for Cole crops.
- Kale (C): A member of Cole crops, but not a CMS source.
- Wild mustard (D): A different CMS source (not for Cole crops).
Thus, wild radish is the source of CMS in Cole crops.
Step 3: Final Answer:
Thus, the CMS system in Cole crops was originally transferred from wild radish, which corresponds to option (B).
[0.5cm]
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