pseudogamyn.

Brit.

/s(j)uːˈdɒɡəmi/, U.S.

/suˈdɑɡəmi/

Origin: Formed within English, by compounding; originally modelled on a German lexical item. Etymons: pseudo- comb. form, -gamy comb. form.

Etymology: < pseudo- comb. form + -gamy comb. form, originally (in sense 1a) after German Pseudogamie ( W. O. Focke Pflanzen-Mischlinge (1881) vii. 510). Compare post-classical Latin pseudogamia false or pretended marriage (a1540).

a. Botany. A form of apomixis in which the embryo develops from the female gamete following the stimulus of pollination but without fertilization (but usually requiring fertilization of the polar nuclei to generate the endosperm).

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [noun] > others

adosculation1682

autogeny?1818

gemmation1836

parthenogenesis1849

virgin production1849

rejuvenescence1853

agamogenesis1857

monogeny1857

autogenesis1858

homogenesis1858

proliferation1864

monogenesis1866

swarming1867

paedogenesis1870

monogony1873

virginal generation1879

division1880

monogenesy1890

parthenogeny1890

anisogamy1891

isogamy1891

paragamy1891

separation1891

paedogenesis1892

parthenism1892

heterogamy1894

thelytoky1895

flagellation1898

cytogamy1899

pseudogamy1900

tychoparthenogenesis1900

syngamy1904

pseudogamy1907

ectogenesis1909

paedogamy1910

apomixis1913

progenesis1934

agamospermy1939

mixis1944

somatogamy1949

decapitation-

1900 B. D. Jackson Gloss. Bot. Terms 213/2 Pseudogamy, parthenogenetic fruiting, as pollination without impregnation of ovules.

1908 Ann. Bot. 22 42 Humaria rutilans is..an example of the so-called apogamous development of the ascocarp, or pseudogamy.

1976 P. Bell & D. Coombe tr. Strasburger's Textbk. Bot. (new ed.) 403 In many angiosperms embryos develop from diploid unfertilized egg-cells (parthenogenesis and angiospermy..), but sometimes this development requires the stimulus of pollination (pseudogamy).

1990 Crop Sci. 30 86 Pollination or fertilization was necessary for endosperm development, which indicates pseudogamy.

b. Zoology. A form of parthenogenetic reproduction in which mating (esp. penetration of the ovum by a sperm) is required to stimulate development of the ovum, but in which the male does not contribute genetic material to the offspring. Also called gynogenesis.

ΚΠ

1914 Philos. Trans. (Royal Soc.) B. 204 340 It may be urged that this inheritance through the female parent alone, in crosses between the Echinus species, is not a true case of hybridization at all, but is pseudogamy.

1956 Evolution 10 354/1 In that species, as in related nematodes, pseudogamy existed, with the continuing need for stimulation of the egg by sperm, even though the sperm took no further part in the development.

1997 Ann. Rev. Ecol. & Systematics 28 412 In fishes and amphibians [with obligate apomixis], pseudogamy is required, with related species serving as sperm donors.

2. Mycology. Fusion between two vegetative cells, rather than between gametes; somatogamy. Now disused.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [noun] > others

adosculation1682

autogeny?1818

gemmation1836

parthenogenesis1849

virgin production1849

rejuvenescence1853

agamogenesis1857

monogeny1857

autogenesis1858

homogenesis1858

proliferation1864

monogenesis1866

swarming1867

paedogenesis1870

monogony1873

virginal generation1879

division1880

monogenesy1890

parthenogeny1890

anisogamy1891

isogamy1891

paragamy1891

separation1891

paedogenesis1892

parthenism1892

heterogamy1894

thelytoky1895

flagellation1898

cytogamy1899

pseudogamy1900

tychoparthenogenesis1900

syngamy1904

pseudogamy1907

ectogenesis1909

paedogamy1910

apomixis1913

progenesis1934

agamospermy1939

mixis1944

somatogamy1949

decapitation-

1907 Annales Mycologica 5 422 Fusion of two vegetative nuclei: pseudogamy.

1919 Bot. Gaz. 68 68 The fusion of 2 such [hyphal] cells (plasmogamy or pseudogamy) introduces the cytoplasm and nucleus or nuclei of one cell into the other.

1928 C. W. Dodge tr. E. A. Gäumann Compar. Morphol. Fungi iv. 13 The sexual processes occurring outside in the thallus between two sexually differentiated vegetative cells..called pseudo~mixis (pseudogamy of Hartmann).

Derivatives

pseuˈdogamous adj. reproducing by or involving pseudogamy.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [adjective] > others

gemmiparous1793

gemmiferous1804

agamic1816

zoogenic1842

agamogenetic1858

autogenetic1859

parthenogenetic1860

parthenogenous1869

unsexual1873

monogenous1874

monogonic1876

monogonous1876

arrenotokous1877

gemmative1877

thelytokous1877

parthenogenic1878

heteroblastic1888

blastogenic1889

isogamous1889

paedogenetic1889

monogenic1890

anisogamous1891

monogenetic1900

paedogamous1912

apomictic1913

cytogamous1918

ectogenetic1923

pseudogamous1932

agamospermous1933

impaternate1934

subsexual1937

mictic1950

somatogamous1950

zygogenetic1950

1932 C. D. Darlington Rec. Adv. in Cytol. xv. 434 Moderate or even high pollen fertility is sometimes found in the pseudogamous Potentilla species.

1960 Evolution 14 473/1 Few cases seem to have been reported..among animals in which parthenogenesis involving the pseudogamous activation of the eggs of one species by the sperm of another constitutes the normal mode of reproduction.

1999 Trends Plant Sci. 4 44/2 Most natural apomicts are pseudogamous: pollination is required for fertilization of the polar nuclei, a prerequisite for endosperm development.

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).

单词	pseudogamy
释义	pseudogamyn. Brit. /s(j)uːˈdɒɡəmi/, U.S. /suˈdɑɡəmi/ Origin: Formed within English, by compounding; originally modelled on a German lexical item. Etymons: pseudo- comb. form, -gamy comb. form. Etymology: < pseudo- comb. form + -gamy comb. form, originally (in sense 1a) after German Pseudogamie ( W. O. Focke Pflanzen-Mischlinge (1881) vii. 510). Compare post-classical Latin pseudogamia false or pretended marriage (a1540). 1. a. Botany. A form of apomixis in which the embryo develops from the female gamete following the stimulus of pollination but without fertilization (but usually requiring fertilization of the polar nuclei to generate the endosperm). ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [noun] > others adosculation1682 autogeny?1818 gemmation1836 parthenogenesis1849 virgin production1849 rejuvenescence1853 agamogenesis1857 monogeny1857 autogenesis1858 homogenesis1858 proliferation1864 monogenesis1866 swarming1867 paedogenesis1870 monogony1873 virginal generation1879 division1880 monogenesy1890 parthenogeny1890 anisogamy1891 isogamy1891 paragamy1891 separation1891 paedogenesis1892 parthenism1892 heterogamy1894 thelytoky1895 flagellation1898 cytogamy1899 pseudogamy1900 tychoparthenogenesis1900 syngamy1904 pseudogamy1907 ectogenesis1909 paedogamy1910 apomixis1913 progenesis1934 agamospermy1939 mixis1944 somatogamy1949 decapitation- 1900 B. D. Jackson Gloss. Bot. Terms 213/2 Pseudogamy, parthenogenetic fruiting, as pollination without impregnation of ovules. 1908 Ann. Bot. 22 42 Humaria rutilans is..an example of the so-called apogamous development of the ascocarp, or pseudogamy. 1976 P. Bell & D. Coombe tr. Strasburger's Textbk. Bot. (new ed.) 403 In many angiosperms embryos develop from diploid unfertilized egg-cells (parthenogenesis and angiospermy..), but sometimes this development requires the stimulus of pollination (pseudogamy). 1990 Crop Sci. 30 86 Pollination or fertilization was necessary for endosperm development, which indicates pseudogamy. b. Zoology. A form of parthenogenetic reproduction in which mating (esp. penetration of the ovum by a sperm) is required to stimulate development of the ovum, but in which the male does not contribute genetic material to the offspring. Also called gynogenesis. ΚΠ 1914 Philos. Trans. (Royal Soc.) B. 204 340 It may be urged that this inheritance through the female parent alone, in crosses between the Echinus species, is not a true case of hybridization at all, but is pseudogamy. 1956 Evolution 10 354/1 In that species, as in related nematodes, pseudogamy existed, with the continuing need for stimulation of the egg by sperm, even though the sperm took no further part in the development. 1997 Ann. Rev. Ecol. & Systematics 28 412 In fishes and amphibians [with obligate apomixis], pseudogamy is required, with related species serving as sperm donors. 2. Mycology. Fusion between two vegetative cells, rather than between gametes; somatogamy. Now disused. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [noun] > others adosculation1682 autogeny?1818 gemmation1836 parthenogenesis1849 virgin production1849 rejuvenescence1853 agamogenesis1857 monogeny1857 autogenesis1858 homogenesis1858 proliferation1864 monogenesis1866 swarming1867 paedogenesis1870 monogony1873 virginal generation1879 division1880 monogenesy1890 parthenogeny1890 anisogamy1891 isogamy1891 paragamy1891 separation1891 paedogenesis1892 parthenism1892 heterogamy1894 thelytoky1895 flagellation1898 cytogamy1899 pseudogamy1900 tychoparthenogenesis1900 syngamy1904 pseudogamy1907 ectogenesis1909 paedogamy1910 apomixis1913 progenesis1934 agamospermy1939 mixis1944 somatogamy1949 decapitation- 1907 Annales Mycologica 5 422 Fusion of two vegetative nuclei: pseudogamy. 1919 Bot. Gaz. 68 68 The fusion of 2 such [hyphal] cells (plasmogamy or pseudogamy) introduces the cytoplasm and nucleus or nuclei of one cell into the other. 1928 C. W. Dodge tr. E. A. Gäumann Compar. Morphol. Fungi iv. 13 The sexual processes occurring outside in the thallus between two sexually differentiated vegetative cells..called pseudo~mixis (pseudogamy of Hartmann). Derivatives pseuˈdogamous adj. reproducing by or involving pseudogamy. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [adjective] > others gemmiparous1793 gemmiferous1804 agamic1816 zoogenic1842 agamogenetic1858 autogenetic1859 parthenogenetic1860 parthenogenous1869 unsexual1873 monogenous1874 monogonic1876 monogonous1876 arrenotokous1877 gemmative1877 thelytokous1877 parthenogenic1878 heteroblastic1888 blastogenic1889 isogamous1889 paedogenetic1889 monogenic1890 anisogamous1891 monogenetic1900 paedogamous1912 apomictic1913 cytogamous1918 ectogenetic1923 pseudogamous1932 agamospermous1933 impaternate1934 subsexual1937 mictic1950 somatogamous1950 zygogenetic1950 1932 C. D. Darlington Rec. Adv. in Cytol. xv. 434 Moderate or even high pollen fertility is sometimes found in the pseudogamous Potentilla species. 1960 Evolution 14 473/1 Few cases seem to have been reported..among animals in which parthenogenesis involving the pseudogamous activation of the eggs of one species by the sperm of another constitutes the normal mode of reproduction. 1999 Trends Plant Sci. 4 44/2 Most natural apomicts are pseudogamous: pollination is required for fertilization of the polar nuclei, a prerequisite for endosperm development. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.1900
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