First slide

Plant Growth Regulators

Question

Removal of shoot tips is a very useful technique to boost the production of tea-leaves. This is because

Easy

A

Gibberellins prevent bolting and are inactivated
B

Auxins prevent leaf drop at early stages
C

Effect of auxins is removed and growth of lateral buds is enhanced
D

Gibberellins delay senescence of leaves

Solution

Auxins are generally produced by the growing apices of the stem and roots. Auxins promotes apical dominance. Removal of shoot tips (decapitation) usually results in the growth of lateral buds. It is widely applied in tea plantations and in hedge – making.

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