The sorghum root system consists of 3 types of roots:

1. Primary roots
2. Secondary or Adventitious roots
3. Brace or Buttress roots.

Primary roots:
These roots develop from the radicle and die subsequently.

Secondary or Adventitious roots:

These roots develop from the first node from the mesocotyle.

These rots occupy 5 to 15 cm area in the soil around the base of the stem.

Adventitious roots are small, uniform, and form a small portion of the root system.

Another type of permanent adventitious roots develop from the second internode and above.

These roots are branched laterally (about 1 sq.m) interlacing the soil vertically.

These roots mainly supply nutrients to the plant.

Brace or buttress roots:

These roots develop from the root primordia of the basal nodes above the ground level.

They are stunted, thick, and above ground level.

These roots provide anchorage to the plant.