Radicle

Radicle

The Radicle is the first part of a seedling (a growing plant embryo) to emerge from the seed during the process of germination. The radicle is the embryonic root of the plant, and grows downward in the soil (the radicle being negatively geotropic). Above the radicle is the embryonic stem or hypocotyl, supporting the cotyledon(s).

Function

The radicle allows the seedling to get water and nutrients from the soil. Also, it allows the seedling to anchor itself in the ground. The radicle forms the root system of the plant.

Development

The radicle emerges from a seed after the seed has absorbed water in a process called imbibition. The emergence of the radicle is the first stage of seed germination. The tip of the radicle forms the region of cell division, also known as the meristem. The radicle forms the primary root, and lateral roots emerge from the primary root.

See also

• Germination
• Seed
• Embryo
• Root

References

Radicle Resources
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