Question:
Which of the following term is used for removal of off-types from a seed production plot?
Which of the following term is used for removal of off-types from a seed production plot?
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To ensure certified seed purity, always perform roguing before pollen shedding.
This prevents pollen from off-types from fertilizing the seed crop plants.
This prevents pollen from off-types from fertilizing the seed crop plants.
Updated On: Jul 31, 2026
- Thinning
- Weeding
- Selection
- Roguing
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Maintaining genetic and physical purity is the primary objective of quality seed production.
Any contamination from off-type plants, other varieties, or diseased plants can degrade the genetic standard of the certified seed.
Step 2: Detailed Explanation:
The systematic identification and physical removal of off-types, diseased plants, and plants of other cultivars from a seed production plot is known as roguing.
- Off-types are plants that do not conform to the phenotypic characteristics of the target variety (due to outcrossing, mutations, or mechanical mixtures).
Roguing is carried out at various critical growth stages: vegetative stage, flowering stage, and pre-harvest stage.
Removing these plants before flowering is especially crucial to prevent cross-pollination and subsequent genetic contamination of the seed crop.
In contrast:
- Thinning is the removal of excess seedlings shortly after germination to maintain optimal plant spacing.
- Weeding is the removal of unwanted weed species that compete with the crop for resources.
- Selection is the process of choosing superior plants to propagate in breeding programs.
Step 3: Final Answer:
The term used for removing off-types from a seed production plot is Roguing.
Maintaining genetic and physical purity is the primary objective of quality seed production.
Any contamination from off-type plants, other varieties, or diseased plants can degrade the genetic standard of the certified seed.
Step 2: Detailed Explanation:
The systematic identification and physical removal of off-types, diseased plants, and plants of other cultivars from a seed production plot is known as roguing.
- Off-types are plants that do not conform to the phenotypic characteristics of the target variety (due to outcrossing, mutations, or mechanical mixtures).
Roguing is carried out at various critical growth stages: vegetative stage, flowering stage, and pre-harvest stage.
Removing these plants before flowering is especially crucial to prevent cross-pollination and subsequent genetic contamination of the seed crop.
In contrast:
- Thinning is the removal of excess seedlings shortly after germination to maintain optimal plant spacing.
- Weeding is the removal of unwanted weed species that compete with the crop for resources.
- Selection is the process of choosing superior plants to propagate in breeding programs.
Step 3: Final Answer:
The term used for removing off-types from a seed production plot is Roguing.
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