What are the 3 steps 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 happens in each stage of germination?
The seed coat (testa) ruptures and the embryonic root (radicle) grows into the ground to extract key nutrients and minerals. The cotyledon emerges and produces the growing shoot’s first leaves. The growing plant can be divided into the epicotyl (embryonic shoot), hypocotyl (embryonic stem) and developing roots.
What are the major events in germination?
The process of seed germination includes the following five changes or steps: imbibition, respiration, effect of light on seed germination, mobilization of reserves during seed germination, and role of growth regulators and development of the embryo axis into a seedling.
What are the process of seed germination?
The Seed Germination Process
- Step 1: Imbibition: water fills the seed.
- Step 2: The water activates enzymes that begin the plant’s growth.
- Step 3: The seed grows a root to access water underground.
- Step 4: The seed grows shoots that grow towards the sun.
- Step 5: The shoots grow leaves and begin photmorphogenesis.
How many stages are there in germination?
There are three major stages in the germination process. These are the imbibition of water, increased metabolic activity, and swelling of cells.
What happens to the seed during the imbibition of water at Phase 1 Phase 2 and Phase 3?
Imbibition, the first stage, is usually rapid, commencing with the seed being placed on water where it quickly hydrates the cells and their constituents. Finally, the third phase of water uptake is one of rapid hydration to support the expansion of the embryo as it completes germination and emerges from the seed (Fig.
What is the stage after germination?
The stages that plants go through are from seed to sprout, then through vegetative, budding, flowering, and ripening stages.
What are the four stages of seed germination?
Basic Facts
- The average plant goes through four stages: seed, sprout, seedling, adult plant.
- Seed. Through pollination (pollen reaches the stigma) and ferilization (the pollen and stigma join), a seed is formed.
- Sprout. The next stage, the sprout, is when the shoot reaches the surface.
- Seedling.
- Adult Plant.