Term Information

Accession
PO:0020026
Name
chalaza
Ontology
plant_anatomy
Synonyms
calaza (Spanish, exact), chalazae (exact, plural), chalazas (exact, plural), ovular chlaza (exact), portion of chalaza tissue (exact), カラザ(合点)=珠心と珠皮が珠柄につながるところ、珠孔の反対側 (Japanese, exact), Poaceae chalaza (narrow), Zea chalaza (narrow)
Alternate IDs
PO:0006506, PO:0006458
Definition
A portion of plant tissue (PO:0009007) that is the region in a plant ovule (PO:0020003) where the integuments (PO:0020021) and the nucellus (PO:0020020) join with the funicule (PO:0020006). Source: ISBN:0471245208
Comment
The chalaza is recognized as the region which initiates the two integuments at its flank. If you are annotating to this structure for an angiosperm, please add an additional annotation to plant ovary ovule (PO:0025490). If you are annotating to this structure for an gymnosperm, please add an additional annotation to ovuliferous scale ovule (PO:0025491). If you are annotating to this structure for Zea mays or other grasses, please also add an annotation to the corresponding floret type. Choose the most specific term possible from: spikelet floret (PO:0009082), ear floret (PO:0006354), upper floret of pedicellate spikelet of ear (PO:0006350), upper floret of sessile spikelet of ear (PO:0006352).
Subset
reference
Feedback
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Comments, changes to terms, or requests for new ontology terms can be made at PO issue tracker on GitHub.

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Parents of chalaza (PO:0020026)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
chalaza [is_a relation] is_a  portion of plant tissue (PO:0009007)
chalaza [BFO:0000050 relation] BFO:0000050  plant ovule (PO:0020003)

This term has no children.

PO_GIT
149