What are the main stages of seed germination?

What are the main stages of seed germination?

Such five changes or steps occurring during seed germination are: (1) Imbibition (2) Respiration (3) Effect of Light on Seed Germination(4) Mobilization of Reserves during Seed Germination and Role of Growth Regulators and (5) Development of Embryo Axis into Seedling.

What are the parts of a germinating seed?

The three primary parts of a seed are the embryo, endosperm, and seed coat. The embryo is the young multicellular organism before it emerges from the seed. The endosperm is a source of stored food, consisting primarily of starches. The seed coat consists of one or more protective layers that encase the seed.

What are the 5 stages of seed germination?

The Seed Germination Process :

• Imbibition: water fills the seed.
• The water activates enzymes that begin the plant’s growth.
• The seed grows a root to access water underground.
• The seed grows shoots that grow towards the sun.
• The shoots grow leaves and begin photmorphogenesis. Was this answer helpful?

What are the 3 stages of germination?

In general, germination process can be distinguished into three phases: phase I, rapid water imbibition by seed; phase II, reactivation of metabolism; and phase III, radicle protrusion [6].

What are the 2 types of germination?

There are two types of germination:

• Epigeal Germination: In this type of germination, the hypocotyl elongates rapidly and arches upwards pulling the cotyledons which move above the soil.
• Hypogeal Germination: In this type of germination, the epicotyl elongates and the cotyledons remain below the soil.

What makes a seed germinate?

All seeds need water, oxygen, and proper temperature in order to germinate. Some germinate better in full light while others require darkness to germinate. When a seed is exposed to the proper conditions, water and oxygen are taken in through the seed coat. The embryo’s cells start to enlarge.

What are the six stages of germination?

For humans, the progression is infant, toddler, adolescent, young adult, middle aged adult, and senior citizen, while plants go from seed to sprout, then through vegetative, budding, flowering and ripening stages.

What are the 4 requirements for germination?

Temperature, moisture, air, and light conditions must be correct for seeds to germinate. All seeds have optimal temperature ranges for germination (Table 1).

What are the stages of seed germination?

Process of Germination. Germination of seed follows four main changes that are occurred in steps. These steps are imbibition, respiration, Mobilization of food reserves, and development of the embryo into a seedling.

What factors affect germination?

Germination is affected by two main factors, moisture and temperature. The seed will remain dormant until it is exposed to moisture enough the husk or outer layer allows the water into the seed itself, at which time the husk normally will split and a tiny shoot will emerge.

How do you get seeds to germinate faster?

Soak legumes, as well as other dense, hard seeds such as corn, in lukewarm water overnight to speed germination. Place in a bowl that holds twice the volume of the seeds and fill with water. Seeds absorb moisture and swell to nearly double in size.

What makes seeds germinate faster?

Cover your seed flats or pots with a plastic cover or food-grade plastic film to maintain moisture. Seeds require steady, moist heat to germinate, and placing the supplied plastic cover over seed flats or wrapping the top of the seed pot with plastic film helps keep the humidity inside the enclosure constant, speeding germination.