MySheen

The process of seed germination and growth.

Published: 2024-11-06 Author: mysheen
Last Updated: 2024/11/06, When a seed comes into contact with water, the hydrophilic substance in it attracts water molecules, softening or rupturing the seed coat and increasing its permeability. The cell wall of the seed will hydrate with the protoplast, the enzyme will be activated, the respiration and metabolism will increase, and the volume of the seed will increase and grow into germ, radicle, and then gradually grow roots, stems and leaves to form seedlings.

I. Imbibition

When seeds germinate and grow, when the seeds are soaked in water or dropped into wet soil, the hydrophilic substances in the seeds attract water molecules, which will make the seed grow rapidly. At the beginning of imbibition, the water absorption will be faster, and then it will gradually slow down. As a result of imbibition, the seed coat softens or ruptures, and its permeability to gases, etc., increases, which promotes germination.

II. Hydration and enzyme activation

When the seed water absorption stage is over, the seed cell wall will be hydrated with protoplasm, the seed enzymes will also begin to activate, respiration and metabolism will increase dramatically.

III. Seed embryo breaks through seed coat

The seed embryo breaks through the seed coat and then increases in size. Most seeds grow the radicle first and then the embryo.

IV. Growing into seedlings

Seeds grow radicles, embryos will gradually grow roots, stems, leaves, and then form seedlings.

 
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