Question:
The addition of silver nitrate in plant tissue culture media is useful for managing and minimizing detrimental effects of which of the following plant hormones?
The addition of silver nitrate in plant tissue culture media is useful for managing and minimizing detrimental effects of which of the following plant hormones?
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• Silver nitrate → Ethylene inhibitor
• Used in tissue culture to improve growth
Updated On: May 13, 2026
- NAA
- Ethylene
- GA-34
- Kinetin
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
Ethylene is a gaseous plant hormone that can accumulate in tissue culture conditions and negatively affect growth.
• Causes senescence and inhibits regeneration
• Needs to be controlled in in vitro cultures
Step 1: Role of silver nitrate.
• Silver ions (Ag$^+$) act as ethylene inhibitors
• They block ethylene perception in plant tissues
Step 2: Analyzing options.
• NAA: Auxin → not affected by silver nitrate.
• Ethylene: Inhibited by silver nitrate → Correct.
• GA-34: Gibberellin → not relevant.
• Kinetin: Cytokinin → not relevant.
Step 3: Selecting the correct answer.
Thus, silver nitrate is used to inhibit ethylene effects.
• Causes senescence and inhibits regeneration
• Needs to be controlled in in vitro cultures
Step 1: Role of silver nitrate.
• Silver ions (Ag$^+$) act as ethylene inhibitors
• They block ethylene perception in plant tissues
Step 2: Analyzing options.
• NAA: Auxin → not affected by silver nitrate.
• Ethylene: Inhibited by silver nitrate → Correct.
• GA-34: Gibberellin → not relevant.
• Kinetin: Cytokinin → not relevant.
Step 3: Selecting the correct answer.
Thus, silver nitrate is used to inhibit ethylene effects.
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