Write the physiological response of gibberellins in plants.

Gibberellins are used to -

* Increase the length of grapes stalks.
* Helps in delaying senescence.
* Gibberellins elongate and improve the shape of apple.

 * Speed up the malting process in brewing industry.
* In sugarcane crop, increases the length of stem, and increases the yield by 20 tons per acre.
* Gibberellins speeds up maturity period, leading to early seed production in juvenile conifers.
* Promote bolting in beet and cabbages and many plants with rosette habit.