archespore


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archespore

(ˈɑːkɪˌspɔː) or

archesporium

n, pl -spores or -sporia (-ˈspɔːrɪə)
(Botany) botany the cell or group of cells in a sporangium that gives rise to spores
ˌarcheˈsporial adj
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Noun1.archespore - primitive cell or group of cells from which a mother cell develops
cell - (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals
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References in periodicals archive ?
The archespore, which is directly under the nucellar epidermis, develops into the megaspore mother cell.
Since the archespore ultimately gives rise to the megagametophyte (embryo sac), the nucellus is the part of the sporophyte that encloses the megagametophyte, separating it from the inner integument, although some of the nucellus may have degenerated at floral anthesis.
The archespore forms in the subdermal layer (of the trizonate type), immediately subtended by the central zone.