Hey all, this is going to be our final hormone. You excited? Haha... Ok let's get down to business..
WHAT EXACTLY IS GIBBERELLIN?
Gibberellins are plant growth substances (phytohormones) involved in promotion of stem elongation, mobilisation of food reserves in seeds and other processes. Its absence results in the dwarfism of some plant varieties.
STRUCTURE OF GIBBERELLIN
http://upload.wikimedia.org/wikipedia/commons/5/5f/Gibberelin_A3.png
EFFECTS
Stimulates shoot and cell elongation.
Delays senescence of leaves.
Inhibits root growth.
Produces seed germination.
Stimulates bolting and flowering in biennials.
Regulates production of hydrolytic enzymes for digesting starches.
Inhibits bud formation.
Inhibits leaf formation.
Breaking of dormancy.
Used to increase fruit size, increase cluster size (in grapes), delay ripening of citrus fruits, speed up flowering of strawberries, and stimulate starch break down in barley (for beer making).
Used at high concentration to promote growth of male flowers on female plants, thus allowing production of female-only seeds.
FUNCTIONS
Stimulate stem elongation by stimulating cell division and elongation.
Stimulates bolting/flowering in response to long days.
Breaks seed dormancy in some plants which require stratification or light to induce germination.
Induces maleness in dioecious flowers (sex expression).
Can cause seedless fruit development.
Can delay senescence in leaves and citrus fruits.
Isn't it awesome that plants have this ability to enable and inhibit their growth according to the circumstances? Think about it.. If us humans too have this ability, we would be able to maintain our youthful and active lifestyle. This also means that we would not have to worry about being unable to do certain things when we are old....
This is our final hormone. Hope you had a fruitful experience with us.
Do post me your queries :)
WHAT EXACTLY IS GIBBERELLIN?
Gibberellins are plant growth substances (phytohormones) involved in promotion of stem elongation, mobilisation of food reserves in seeds and other processes. Its absence results in the dwarfism of some plant varieties.
STRUCTURE OF GIBBERELLIN
http://upload.wikimedia.org/wikipedia/commons/5/5f/Gibberelin_A3.png
EFFECTS
Stimulates shoot and cell elongation.
Delays senescence of leaves.
Inhibits root growth.
Produces seed germination.
Stimulates bolting and flowering in biennials.
Regulates production of hydrolytic enzymes for digesting starches.
Inhibits bud formation.
Inhibits leaf formation.
Breaking of dormancy.
Used to increase fruit size, increase cluster size (in grapes), delay ripening of citrus fruits, speed up flowering of strawberries, and stimulate starch break down in barley (for beer making).
Used at high concentration to promote growth of male flowers on female plants, thus allowing production of female-only seeds.
FUNCTIONS
Stimulate stem elongation by stimulating cell division and elongation.
Stimulates bolting/flowering in response to long days.
Breaks seed dormancy in some plants which require stratification or light to induce germination.
Induces maleness in dioecious flowers (sex expression).
Can cause seedless fruit development.
Can delay senescence in leaves and citrus fruits.
Isn't it awesome that plants have this ability to enable and inhibit their growth according to the circumstances? Think about it.. If us humans too have this ability, we would be able to maintain our youthful and active lifestyle. This also means that we would not have to worry about being unable to do certain things when we are old....
This is our final hormone. Hope you had a fruitful experience with us.
Do post me your queries :)
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