Gibberellins

• There are more than 100 gibberellins reported from widely different organisms such as fungi and higher plants
• Gibberellic acid (GA3) was one of the first gibberellins to be discovered and remains the most intensively studied form
• Gibberellins ability to cause an increase in length of axis is used to increase the length of grapes stalks
• Gibberellins, cause fruits like apple to elongate and improve its shape
• GA3 delays senescence. Thus, the fruits can be left on the tree longer so as to extend the market period
• GA3 is used to speed up the malting process in brewing industry
• Spraying sugarcane crop with gibberellins increases the length of the stem, thus increasing the yield by as much as 20 tonnes per acre.
• Spraying juvenile conifers with GAs hastens the maturity period, thus leading to early seed production
• Gibberellins promotes bolting (internode elongation just prior to flowering) in beet, cabbages and many plants with rosette habit.