growth ring

Term Information

Accession
PO:0004514
Aspect
plant anatomy
Synonyms
narrow: annual ring
narrow: false annual ring
exact: anillo de crecimiento (Spanish)
exact: growth layer
exact: 年輪(=annual ring) (Japanese)
Definition
A portion of secondary xylem (PO:0005848) that has as parts a single layer of early wood (PO:0004515) and a single layer of late wood (PO:0004516) from the same growth season and is part of a shoot axis (PO:0025029) or root (PO:0009005). [source: ISBN:0471245208, POC:curators]
Comment
Appears as a ring in a transverse section of plant axis (PO:0025004). May be an annual ring (one growth ring per year) or a false annual ring (more or less than one growth ring per year).

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External References

None.