Question:
What is the main cause of appearance of gold colour flecks on tomato fruits?
What is the main cause of appearance of gold colour flecks on tomato fruits?
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Gold flecks on tomato skin are composed of calcium oxalate crystals.
This disorder occurs when the potassium-to-calcium (K:Ca) ratio is low, leading to excess calcium accumulation in the fruit.
This disorder occurs when the potassium-to-calcium (K:Ca) ratio is low, leading to excess calcium accumulation in the fruit.
Updated On: Aug 7, 2026
- Low K: Ca ratio
- High Mg content
- High EC level
- Low Boron content
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Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Physiological fruit disorders in tomatoes can reduce quality and market value.
Gold color flecks, also known as "gold flecks" or "calcium spots," appear as small, shiny golden dots around the shoulder of the fruit.
Step 2: Detailed Explanation:
Gold flecks are caused by the accumulation of calcium oxalate crystals in the cells of the fruit wall (pericarp).
This accumulation is directly linked to an imbalance between potassium ($K$) and calcium ($Ca$) uptake.
When the Potassium to Calcium ratio in the plant tissue is low (a Low K: Ca ratio), excessive calcium is transported into the fruit.
This excess calcium precipitates as calcium oxalate crystals, creating the reflective, golden spots visible on the skin.
A high concentration of calcium in the nutrient solution or low potassium levels relative to calcium can trigger this disorder.
Maintaining a proper K:Ca balance in the nutrient solution helps manage the appearance of these flecks.
Step 3: Final Answer:
The main cause of gold color flecks on tomato fruits is a Low K: Ca ratio, which corresponds to Option (A).
Physiological fruit disorders in tomatoes can reduce quality and market value.
Gold color flecks, also known as "gold flecks" or "calcium spots," appear as small, shiny golden dots around the shoulder of the fruit.
Step 2: Detailed Explanation:
Gold flecks are caused by the accumulation of calcium oxalate crystals in the cells of the fruit wall (pericarp).
This accumulation is directly linked to an imbalance between potassium ($K$) and calcium ($Ca$) uptake.
When the Potassium to Calcium ratio in the plant tissue is low (a Low K: Ca ratio), excessive calcium is transported into the fruit.
This excess calcium precipitates as calcium oxalate crystals, creating the reflective, golden spots visible on the skin.
A high concentration of calcium in the nutrient solution or low potassium levels relative to calcium can trigger this disorder.
Maintaining a proper K:Ca balance in the nutrient solution helps manage the appearance of these flecks.
Step 3: Final Answer:
The main cause of gold color flecks on tomato fruits is a Low K: Ca ratio, which corresponds to Option (A).
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