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Category: Support and Movement
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auxin

gibberellin

cytokinin
abcisic acid
ethene


AUXIN

plant growth substances 

The common natural auxin is IAA (indole acetic acid)

                         2. maintenance of apical dominance
                         3.regulating tropic movements
                         4.inhibition of leaf abscission
                         5.induction of cambial activity
                         6.induction of root growth
                         7.induction of fruit growth

 

GIBBERELLIN/GIBBERELLIC ACID

                         2.activating enzymes at seed germination

 

CYTOKININ

 Natural cytokinins are compound related to adenine

                            2.inhibiting apical dominance
                            3.delay senescence of leaves
                            4.inducing cell division by interacting with auxin

 

ABCISIC ACID(ABA)

                            2.closure of stomata at water stress conditions
                            3.inhibition of bud growth and cambium activity in winter in plants growing in temperate countries.


ETHELENE

 plant growth substances

                         2.induce ripening of fruits
                         3.induce flowering in some plants
                         4.abscission of leaves and fruits

 

 

Synthetic compounds

act similar to the natural plant growth substances


Uses of natural and synthetic plant growth substances in agriculture

 

 

Wanna memorize easily?  Let's give it a try using the photographic memory:)

   plant growth substances

 

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