Gibberellic Acid (GA) *DELETED*

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Galvie_Flu

Registered: 06/30/02
Posts: 6,632

Gibberellic Acid (GA) *DELETED*

#2113293 - 11/16/03 11:42 PM (23 years, 3 days ago)

Post deleted by shaos

Reason for deletion: deleted

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neuro
Phytophiliac

Registered: 08/11/99
Posts: 6,633
Loc: Rigel 7
Last seen: 11 months, 3 days

Re: Gibberellic Acid (GA)

[Re: Galvie_Flu]
#2116363 - 11/17/03 02:15 PM (23 years, 2 days ago)

>>Some plants produce more growth hormone than others, thats why they get so damn large, and grow faster. bamboo has lots of this.

There are many factors that influence plant growth, different hormones in addition to GA (and different kinds of GA of more than 70 naturally occuring), combinations of hormones, and environmental factors.

Applications of Gibberrellins to different plants have different effects.

Gibberellins are produced in the shoot apex and occur also in embryos and cotyledons of immature seeds and roots. They occur in seed, flowers, germinating seed, and developing flowers. The highest concentration occurs in immature seeds. This class of hormones prodmotes cell dvision, stem elongation, seed germination (by breaking dormancy), flowering, and fruit development.

In carrots (Daucus carota) and cabbage (Brassica oleracea var Capitata), among others, exposure to long days or cold is required to induce flowering (bolting). Applications of gibberellic acid eliminates the need for these environmental treatments. Gibberellins are noted for their ability to overcome dwarfism in plants, allowing compact plants to develop to normal heights. Gibberellic acid is used to induce seedlessness in grapes (called parthenocarpy); the size of seedless grapes is also increased through the application of this hormone.

At the end of WWII research was found in Japan that was already published but unknown to the western world. The japanese noticed that some of their rice plant seedlings would grow very tall and spindly and thin very fast. It was found that a fungus Gibberellin was causing it. The hormone produced by the fungus was the same produced by plants in the various methods i listed above. The plants would grow super tall and fall over and die. Research isolated the chemicals in the fungus and found it also to be present in plants. But overloading the plant with the hormone caused it to grow too fast and weak and die.

Gibberellin is mainly used in the breaking of dormancy of flower/shoot buds, seeds, and to promote flowering of certain plants without the need for cold temperatures. If you're looking for some miracle chemical that will make your plants grow healthy strong and fast, Gibberellin isn't necessarily it.

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