Let me share with you a comparison between Ethene and Cytokinin.
| Aspect | Ethene (Ethylene) | Cytokinin |
| Chemical formula | C2H4 | It is often derived from adenine. |
| Function | Regulates the ripening of fruits, leaf abscission and other developmental processes. | A plant growth regulator, promoting cell division, shoots initiation and delaying senescence. |
| Source | Naturally produced by plants during various physiological processes, also released during certain stress conditions. | Synthesized within plant tissues, particularly in the roots and transported to other parts of the plant. |
| Mode of Action | Acts as a signaling molecule in gaseous form, influencing various developmental processes. | Acts as a signaling molecule in liquid form, influencing cell division, shoot formation and other growth-related processes. |
| Effects on Plants | Promotes fruit ripening, leaf senescence, and responses to stress. | Stimulates cell division, shoot growth, and root development; delays senescence. |
| Commercial Uses | Used in agriculture for fruit ripening and as a signaling molecule in plant responses to stress. | Used as a plant growth regulator in agriculture to enhance crop yield and improve stress tolerance. |
| Regulation in Plants | Production is influenced by environmental factors such as temperature, light, and stress. | Levels are regulated by various factors, including environmental stimuli and plant developmental stages. |