What is the role of Gibberellins in plant growth and development?

1.	What is the role of Gibberellins in plant growth and development?
Answer» 1. Gibberellins has a significant effect on stem elongation. 2. It also increases the leaf lamina area. This is due to stimulation of cell division and cell elongation to both leaves and stem. 3. It leads to the formation of seedless fruits. 4. Gibberellins along with auxins promote cell elongation and leaf expansion. 5. Parthenocarpy is induced in fruits like apple and pear with spray of Gibberellins. 6. These substances are also known to induce enzymes like amylase, protease, lipase, etc. at the on set of seed germination and break the seed dormancy. 7. These substances are used for fruit setting and also for growing seed less fruits. 8. In beverages industry gibberellin is used to stimulate amylase activity in barley seeds. This is known to enhance the malting of barley grains.

Answer»

1. Gibberellins has a significant effect on stem elongation.

2. It also increases the leaf lamina area. This is due to stimulation of cell division and cell elongation to both leaves and stem.

3. It leads to the formation of seedless fruits.

4. Gibberellins along with auxins promote cell elongation and leaf expansion.

5. Parthenocarpy is induced in fruits like apple and pear with spray of Gibberellins.

6. These substances are also known to induce enzymes like amylase, protease, lipase, etc. at the on set of seed germination and break the seed dormancy.

7. These substances are used for fruit setting and also for growing seed less fruits.

8. In beverages industry gibberellin is used to stimulate amylase activity in barley seeds. This is known to enhance the malting of barley grains.

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