Discuss about physiological effects and applications of ethylene.

1.	Discuss about physiological effects and applications of ethylene.
Answer» 1. Ethylene is a gaseous growth inhibitor hormone. 2. It promotes ripening of fruits like bananas, apples and mangoes. The commercial application of ethephon is done. 3. It initiates growth of lateral roots. 4. Dormancy of buds and seeds is broken by its application. 5. It accelerates formation of abscission layer and thus abscission of leaves, flowers and fruits is observed. 6. Ethylene is responsible for checking growth of lateral buds thus causes apical dominance and retards flowering. 7. Process of senescence of plant organs is enhanced. 8. Epinasty, i.e. drooping of leaves and flowers results due to its application in some plants. 9. It increases activity of chlorophyllase enzyme causing degreening effect in banana and Citrus fruits.

Answer»

1. Ethylene is a gaseous growth inhibitor hormone.

2. It promotes ripening of fruits like bananas, apples and mangoes. The commercial application of ethephon is done.

3. It initiates growth of lateral roots.

4. Dormancy of buds and seeds is broken by its application.

5. It accelerates formation of abscission layer and thus abscission of leaves, flowers and fruits is observed.

6. Ethylene is responsible for checking growth of lateral buds thus causes apical dominance and retards flowering.

7. Process of senescence of plant organs is enhanced.

8. Epinasty, i.e. drooping of leaves and flowers results due to its application in some plants.

9. It increases activity of chlorophyllase enzyme causing degreening effect in banana and Citrus fruits.

Discussion