megaspore

Term Information

Accession
PO:0020019
Aspect
plant anatomy
Synonyms
related: macrospore
narrow: Poaceae megaspore
narrow: Zea megaspore
alt_id: PO:0006464
alt_id: PO:0006494
exact: megaspora (Spanish)
exact: 大胞子 (Japanese)
Definition
The larger, in general, of the two kinds of spores produced after meiosis in the life cycle of a heterosporous plant, and on germination giving rise to the female gametophyte (embryo sac). [source: APweb:Glossary]
Comment
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.