1.

What is Growth inhibitors? What are the types and its Application/Uses? 

Answer»

Growth inhibitors : Involved in growth inhibiting activities like-dormancy, abscission etc.

Types :

1. Ethylene

2. Abscissic Acid (ABA)

Name of HormonePhysiological EffectsApplication/Uses
1. Abscissic Acid (ABA)
  • Also called as stress hormone, because increases tolerance of plants to various stresses. 
  • Reduces seed dormancy 
  • Stimulates closure of stomata under water stress conditions. 
  • Stimulates formation of abscission layer and abscission of leaves, flowers and fruits
Prolongs dormancy of seed for storage.
2. Ethylene
  • Only gaseous hormone.
  • Also called as fruit ripening hormone, because hastens ripening of fruits. 
  • Promotes horizontal growth of seedlings. 
  • Induces apical hook formation in dicot seedlings. 
  • Promotes senescence and abscission of leaves and flowers.
  • Promotes root growth and root hair formation.
  • It hastens fruits ripening in tomato and apple. 
  • Promotes production of female flowers on a monoecious plant.


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