apogamy

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apogamy

[ə′päg·ə·mē]
(biology)
Asexual, parthenogenetic development of diploid cells, such as the development of a sporophyte from a gametophyte without fertilization.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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concolor from other geographical locations, showed that antheridia disappeared before the development of archegonia, and that the spores are formed in number of 32 per sporangium; the authors concluded that the sporophytes were of apogamous origin (Zamora et al.
Gametofito de Doryopteris triphylla (Pteridaceae, Polypodiopsida)
Sometimes, apogamy with formation of gametangia has been documented (Migliaro & Gabriel y Galan 2012), and has been said to be facultative/induced, i.e., the plant could either experience sexual contacts or, due to some external facts, produce apogamous sporophytes; however, some apogamous ferns are known to produce no gametangia at all, or gametangia failed to produce viable, normal gametes, so the apogamy is obligated (Raghavan 1989).
Profundizando en la evolucion de los helechos: un enfoque mecanicista a los principales conceptos y tecnicas de estudio
Origin and development of embryos in certain apogamous forms of Dryopteris.
Gametofitos y esporofitos jovenes de Dryopteris wallichiana (Spreng.) Hyl. (Dryopteridaceae -- Pteridophyta)

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