Seed dormancy is a natural survival mechanism in which a viable seed does not germinate even when environmental conditions such as water, oxygen, and temperature are suitable. This temporary resting phase helps seeds delay germination until conditions become favorable for healthy seedling growth. Dormancy ensures that seeds do not sprout during unfavorable seasons like extreme summer, winter, or drought, increasing the chances of plant survival and successful reproduction.

Types of Seed Dormancy

Seed dormancy is generally classified into two main types:

• Primary Dormancy: This type develops while the seed is still attached to the parent plant. It prevents immediate germination after the seed is dispersed.

• Secondary Dormancy: This occurs after seed dispersal when environmental conditions become unfavorable. Even if the seed was initially ready to germinate, it enters dormancy again until suitable conditions return.

Causes of Seed Dormancy

Several factors can cause seed dormancy, including:

• Hard or impermeable seed coats that prevent water absorption.

• Immature embryos that require additional development before germination.

• Presence of natural growth-inhibiting chemicals within the seed.

• Environmental conditions such as low temperatures, inadequate light, or lack of moisture.

Importance of Seed Dormancy

• Ensures survival: Protects seeds from germinating during unfavorable environmental conditions.

• Promotes timely germination: Allows seeds to sprout only when conditions are suitable for healthy growth.

• Increases plant survival: Improves the chances of seedlings establishing successfully.

• Prevents crop loss: Reduces the risk of all seeds germinating at once and being damaged by drought, frost, or other adverse conditions.

• Maintains species continuity: Helps preserve plant populations across different seasons and years.

• Supports natural seed dispersal: Gives seeds enough time to spread to suitable locations before germination.

• Conserves seed viability: Keeps seeds alive for longer periods until favorable conditions are available.

• Benefits agriculture: Enables farmers and researchers to store seeds and use dormancy-breaking techniques for better germination and crop production.