chalaza

Term Information

Accession
PO:0020026
Aspect
plant anatomy
Synonyms
narrow: Poaceae chalaza
narrow: Zea chalaza
alt_id: PO:0006458
alt_id: PO:0006506
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: calaza (Spanish)
exact: chalazae
exact: chalazas
exact: ovular chlaza
exact: portion of chalaza tissue
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:047124529]
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).

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External References

None.