ABSTRACT
From the radicle develops a taproot system with numerous lateral branches (Figure 1). In the primary state the stele is diarch, delimited by the pericycle. In the endodermis there is a casparian strip, the primary cortex contains parenchyma, with cells of thin cellulose walls and with many intercellular spaces. In the absorption zone the primary root is covered by a typical rhizodermis.
