Term Information

Accession
PO:0025279
Name
megagametophyte
Ontology
plant_anatomy
Synonyms
female gametophyte (exact), megagametofito (Spanish, exact), 大配偶体 (Japanese, exact)
Alternate IDs
None
Definition
A whole plant in the gametophyte development stage (PO:0028003) that produces only plant egg cells (PO:0020094). Source: POC:curators
Comment
Megagametophytes in bryophytes only produce egg cells, but do not develop from megaspores, because there is no heterospory in bryophytes. In some pteridophytes, megagametophytes develop from megaspores. In angiosperms, Gnetum, and Weltwischia, the megagametophyte is greatly reduced. The megagametophyte in angiosperms is an embryo sac.
Subset
None
Feedback
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Parents of megagametophyte (PO:0025279)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
megagametophyte [is_a relation] is_a  whole plant (PO:0000003)
Children of megagametophyte (PO:0025279)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
embryo sac (PO:0025074) [is_a relation] is_a  megagametophyte
archegonium megagametophyte (PO:0025282) [is_a relation] is_a  megagametophyte
PO_GIT
318