Question:
Identify the method in which multiple traits are considered while selection and found to be widely used, less time consuming and comparably easier.
Identify the method in which multiple traits are considered while selection and found to be widely used, less time consuming and comparably easier.
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Tandem = One by one (Slow).
Independent Culling = Passing multiple "exams" at once (Simple/Fast).
Selection Index = The most efficient but most complex (Requires computer/heavy math).
Independent Culling = Passing multiple "exams" at once (Simple/Fast).
Selection Index = The most efficient but most complex (Requires computer/heavy math).
Updated On: Aug 7, 2026
- Recurrent selection
- Tandem Selection
- Independent culling
- Family cum within family selection
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Question:
Breeding programs usually aim to improve several traits at once (e.g., height, girth, and disease resistance). The question asks for a selection method that is practical, simple, and relatively fast for multi-trait improvement.
Detailed Explanation:
• Tandem Selection: Improving one trait at a time. It is very slow because while you improve height, you might lose girth.
• Independent Culling Levels: In this method, the breeder sets a minimum threshold (culling level) for each trait independently. If a tree fails to meet the threshold for even one trait, it is rejected (culled).
• It is widely used in forestry because it is straightforward to implement in the field, doesn't require complex statistical calculations (unlike Selection Indices), and allows selection for all traits in a single generation.
• Recurrent selection is a long-term population improvement strategy, not a specific multi-trait screening method.
• Family selection focuses on average performance rather than simple multi-trait thresholds.
Step 2: Final Answer:
Independent culling is the widely used, easier method for simultaneous selection of multiple traits.
Breeding programs usually aim to improve several traits at once (e.g., height, girth, and disease resistance). The question asks for a selection method that is practical, simple, and relatively fast for multi-trait improvement.
Detailed Explanation:
• Tandem Selection: Improving one trait at a time. It is very slow because while you improve height, you might lose girth.
• Independent Culling Levels: In this method, the breeder sets a minimum threshold (culling level) for each trait independently. If a tree fails to meet the threshold for even one trait, it is rejected (culled).
• It is widely used in forestry because it is straightforward to implement in the field, doesn't require complex statistical calculations (unlike Selection Indices), and allows selection for all traits in a single generation.
• Recurrent selection is a long-term population improvement strategy, not a specific multi-trait screening method.
• Family selection focuses on average performance rather than simple multi-trait thresholds.
Step 2: Final Answer:
Independent culling is the widely used, easier method for simultaneous selection of multiple traits.
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