Comparison Among Auxin, Gibberellin and Cytokinin

The following table shows the comparison among Auxin, Gibberellin and Cytokinin:

Auxin

Gibberellin

Cytokinin

It is an organic acid: Indole radicle-Auxin a(auxenotriolic acid): C18H32O5, auxin b(auxenolonic acid): C18H30O4 and hetero auxin(indole acetic acid): C10H9O2N.

It is also organic acid-5-ringed diterpenoids. Its chemical formula is C19H22O6 (GA3).

It is also an organic alkali: 6-furfuryl amino purine similar to adenine. Its chemical formula is C10H9N5O.

It acts as both nitrogen free and nitrogenous compound.

Here nitrogen free compounds are auxin a  and auxin b while hetero auxin is nitrogenous compound.

It is nitrogen free compounds.

It is nitrogenous compound.

It is produced in apical meristem of growing region of plants.

It is originated from germinating plants and cotyledons.

It is originated from endosperm and meristem.

Auxin is transported basipetally, i.e., polar transport.

It is transported in all directions.

It is transported in all direction or may be active at the site of synthesis.

Auxin plays an active role in cell division.

It does not perform in cell division.

It helps to encourage cell division.

It initiates adventitious root production at the cut ends of branches.

It controls adventitious root production at the cut ends of branches.

It initiates adventitious root production at the cut ends of branches.

It stops premature leaf fall.

Gibberellin does take part to stop premature leaf fall.

It does take part to stop premature leaf fall.

It controls tropic movements such as phototropism and geotropism.

It does not control tropic movement.

It does not take part in tropic movement.

It also plays an important role in apical dominance.

It does not take part in apical dominance.

Apical dominance can be concentrated.

It helps to produce seedless fruits.

It helps to removes the dormancy of seed.

It stimulates the germination of seeds.

Auxin

Auxin

Gibberellin

Gibberellin

Zeatin

Corn Cytokinin(Zeatin)

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