apogamyn.
/əˈpɒɡəmi/, U.S. /əˈpɑɡəmi/ Botany.
Absence of sexual reproduction; asexual reproduction, agamogenesis; spec. in ferns and other cryptogams, production of the perfect plant directly from a bud on the prothallus instead of by the usual sexual process. (Cf. apospory n., etc.)
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [noun] > reproduction by means of spores
sporophore1875
apogamy1878
1878 S. H. Vines in Jrnl. Bot., Brit. & Foreign 16 360 A transition from an oophore to a sporophore without the intervention of sexual reproductive organs. Apogamy (De Bary).
1886 S. H. Vines in Encycl. Brit. XX. 431/2 By the suppression either of the sexually produced spore or of the asexually produced spore; the former is an instance of apogamy, the latter of apospory.
1921 Ann. Bot. 35 184 We see..in the true apogamy of other species, a further manifestation of the powers of heterosis..ending in apomictical reproduction.
Derivatives
apogamic adj. /æpəʊˈɡæmɪk/ characterized by or of the nature of apogamy; agamogenetic (spec. in the way described above).
/æpəʊˈɡæmɪk/ characterized by or of the nature of apogamy; agamogenetic (spec. in the way described above).ΘΚΠ
the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [adjective]
sexless1757
cryptogamous1781
cryptogamic1785
cryptogamical?1791
asexual1795
aetheogamous1830
amphigamous1841
acrogenic1844
apogamous1878
apogamic1886
1886 Jrnl. Royal Microsc. Soc. 6 298 The author could not detect any act of impregnation [in a parasite on the olive], and believes that reproduction is apogamic.
apogamous adj. /əˈpɒɡəməs/ = apogamic adj.
/əˈpɒɡəməs/ = apogamic adj.ΘΚΠ
the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [adjective]
sexless1757
cryptogamous1781
cryptogamic1785
cryptogamical?1791
asexual1795
aetheogamous1830
amphigamous1841
acrogenic1844
apogamous1878
apogamic1886
1878 S. H. Vines in Jrnl. Bot., Brit. & Foreign 16 361 We may speak of this plant as being ‘aposporous’, using a word which is symmetrical with the term ‘apogamous’, applied by De Bary to those Ferns in whose life-history no process of sexual reproduction occurs.
1883 Ann. Rep. Board Regents Smithsonian Inst. 1881 403 Forms where oogonia are found without male pollinodia..considered as representing a distinct apogamous species.
aˈpogamously adv.
ΚΠ
1886 S. H. Vines in Encycl. Brit. XX. 431/1 [Spores] formed..without a sexual process—in a word, apogamously.
This entry has not yet been fully updated (first published 1933; most recently modified version published online September 2022).
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n.1878