Question:
Explain the applications of gibberellins.
Answer:
(1) Gibberellins are growth promoting hormones and are
present in seeds, stem tips, and root tips.(2) Gibberellins break bud dormancy, seed dormancy.
(3) It activates and enhances seed germination in cereals
Synthesis of the enzyme amylase to produce sugar.
(4) Gibberellins promote stem cell growth
An increase in internode length is noted.
(5) In rosette plants, it does 'bolting' like cabbage
Increase internode length before flowering.
(6) Gibberellins are more compelling in prompting parthenocarpy
than auxins in plants like tomatoes, apples and pears.
(7) It is also used to increase fruit size and bunch length
Grapes
(8) Can be genetically transformed by its use in dwarf plants
phenotypically tall eg. Maize.
(9) It overcomes the needs of vernalization, delaying senescence
and prevents hijacking.
(10) Application of gibberellin leads to production of male flowers
on female plants.
