The process of seed germination

The process of seed germination is divided into four stages: imbibition, germination, germination and seedling formation.

1, imbibition: it is the initial stage of seed germination. It shows that seeds absorb water and swell until they are saturated. The rice grains swell and the chaff softens.

2. Germination: the second stage of seed germination. It is manifested by various weight changes in the seed body, and the stored substances are transformed and transferred to the growth point, which makes the volume of the embryo expand and the tip of the radicle break through the seed coat. This phenomenon is called seed germination, also known as "white exposure" or "broken chest"

3. Germination: After the seeds germinate, the embryo continues to grow. When radicle and embryo extend out of seed coat and develop to a certain extent, it is called germination.

4. Seedling growth: after the bud is sown, the radicle is tied and the coleoptile stands upright, and the growth is called rooting and supporting leaves. Subsequently, the incomplete leaves extend out of the bud sheath, which is called emergence (also called green). After all the leaves of 1-3 are extracted, several adventitious roots grow on the bud sheath nodes, which is beneficial to the seedlings to take root and become seedlings.