Chapter : 5. Control & Coordination
Ethylene
Ethylene (CH2 = CH2)
Functions of ethylene are -
Transverse growth - Stimulates transverse growth so that stem looks swollen.
Inhibition of geotropism - Ethylene nullifies geotropism.
Fruit ripening - Ethylene is a ripening agent, such fruits as apple, banana, mango, citrus etc, Ethylene is used for artificial ripening of these fruits.
Apical dominance - Ethylene inhibits the growth lateral buds and thus cause apical dominance.
Root initiation - In low concentration, ethylene stimulates root initiations.
Abscission - Ethylene acclerates abscission of leaves, flowers and fruits.
Senescence - Ethylene is associated with the process of senescene (ageing) of leaves and flowers.
Breaking of dormancy - Ethylene breaks dormancy of storage organs.
Uses of Ethylene :
Ripening of Fruits - Ethylene lamps are used for colour development and ripening of certain flashy fruits (e.g.- apple, banana, mango etc)
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