Question:
Which portion of the sugar cane is the best for use as seed?
Which portion of the sugar cane is the best for use as seed?
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The top $1/3$ to $1/2$ of sugarcane is preferred for vegetative propagation because it contains active buds, high moisture, and reducing sugars (glucose), which support rapid sprout development.
Updated On: Aug 7, 2026
- Top 1/3 to 1/2 portion
- Top 2/3 to 3/4 portion
- 2/3 portion of bottom
- 3/4 portion of bottom
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Sugarcane is propagated vegetatively using stem cuttings called setts.
The quality of the planting material determines the rate of germination and the initial vigor of the crop.
Step 2: Detailed Explanation:
The top $1/3$ to $1/2$ portion of the sugarcane stalk is the best material for planting due to several factors:
1. High Glucose Content: The top portion contains higher levels of glucose (reducing sugars), which are easily metabolized by developing buds.
The lower portion contains mostly sucrose, which must be inverted before it can be utilized for growth.
2. Nutrient and Water Content: The upper section has higher moisture and nitrogen content, which are essential for early sprout growth.
3. Bud Viability: The buds on the younger, top portion of the stalk are more active and viable compared to the older, woody buds at the bottom.
Using the fibrous bottom portion often results in delayed and uneven germination.
Step 3: Final Answer:
The best portion of sugarcane for use as planting material (seed) is the top $1/3$ to $1/2$ portion, which corresponds to Option (A).
Sugarcane is propagated vegetatively using stem cuttings called setts.
The quality of the planting material determines the rate of germination and the initial vigor of the crop.
Step 2: Detailed Explanation:
The top $1/3$ to $1/2$ portion of the sugarcane stalk is the best material for planting due to several factors:
1. High Glucose Content: The top portion contains higher levels of glucose (reducing sugars), which are easily metabolized by developing buds.
The lower portion contains mostly sucrose, which must be inverted before it can be utilized for growth.
2. Nutrient and Water Content: The upper section has higher moisture and nitrogen content, which are essential for early sprout growth.
3. Bud Viability: The buds on the younger, top portion of the stalk are more active and viable compared to the older, woody buds at the bottom.
Using the fibrous bottom portion often results in delayed and uneven germination.
Step 3: Final Answer:
The best portion of sugarcane for use as planting material (seed) is the top $1/3$ to $1/2$ portion, which corresponds to Option (A).
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