Is ethylene a plant growth inhibitior? If yes then how?

Solution:

The most widely used hormone in agriculture is ethylene because it regulates many physiological processes. It initiates seed germination in peanut and is widely used to hasten fruit ripening which is commercially very beneficial for farmers.

Ethylene acts both as plant growth promoter as well as inhibitor depending upon its concentration, apllication timing and plant species on which it is used. For example, when used in lower concentration, it increases leaf area of mustard. It acts as an inhibitor of leaf area of mustard when used at higher concentration.

Ethylene is also known to cause leaf abscission by inhibiting synthesis and transport of auxin or increasing auxin degradation. So, in this way also, it is a growth inhibitor.
 

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