1、 Imbibition

During the germination and growth of seeds, when the seeds are soaked in water or the seeds fall into wet soil, the hydrophilic substances in the seeds will attract water molecules, which will rapidly increase the volume of seeds. At the beginning of imbibition, the water absorption will be faster, and then it will gradually slow down. The result of imbibition will soften or rupture the seed coat, and the permeability of the seed coat to gas will increase, which will promote germination

2、 Hydration and enzyme activation

When the seed water absorption stage is over, the cell wall of the seed will be hydrated with the protoplasm, various enzymes in the seed will also start to activate, and the respiration and metabolism will increase sharply

3、 Seed embryo breaks through seed coat

The seed embryo will break through the seed coat and then increase in size. Most seeds will grow radicle first and then germ

4、 Grow into seedlings

After the seed grows radicle and germ, it will gradually grow roots, stems and leaves, and then form seedlings