Radial Bundle

Radial Bundle

 

in botany, a group of vascular root tissues. In the radial bundle, alternating groups of primary xylem and phloem that originated from individual bundles of procam-bium are arranged along the radii. Around the periphery, the radial bundle is surrounded by a layer of pericyclic cells that are adjacent to the inner layer of primary cortex, the endoderm. In the center of the root arises either a metaxylem vessel or parenchymal or mechanical tissue. In monocotyledons, the primary structure is retained throughout the life of the root; in dicotyledons, with the appearance of the cambium, the root acquires a secondary structure.

References in periodicals archive ?
Each glandulo-muscular core is formed of two stacks of about 18 radial bundles of myofilaments layered one on top of the other (Fig.
These results suggest that the radial bundles are indeed actinbased.
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