agamospermyn.

Brit.

/əˈɡamə(ʊ)ˌspəːrmi/,

/ɛɪˈɡamə(ʊ)ˌspəːrmi/,

/ˈaɡəmə(ʊ)ˌspəːmi/, U.S.

/eɪˈɡæməˌspərmi/,

/ˈæɡəmoʊˌspərmi/

Origin: A borrowing from Greek, combined with aborrowing from Greek, combined with an English element; modelled on a German lexical item. Etymons: Greek ἄγαμος , Greek σπέρμα , -y suffix³.

Etymology: < ancient Greek ἄγαμος unmarried (see agamous adj.) + σπέρμα seed (see sperm n.) + -y suffix³, after German Agamospermie (G. Täckholm 1922, in Acta Horti Bergiani 7 372). Compare earlier agamospermous adj.

Botany.

Asexual reproduction occurring in certain plants in which seeds are produced from unfertilized ovules.

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-

1939 Hereditas 25 289 According to the terminology introduced by Edman (1931)..agamospermy comprises the phenomena of diplospory, apospory and nucellar embryony.

1958 F. C. Elliott Plant Breeding & Cytol. i. 41 Apomictic reproduction may be divided into reproduction by means of seeds (agamospermy) and vegetative formations such as bulbils, runners, etc. (vegetative reproduction).

1979 Nature 22 Mar. 306/3 Ultrastructural work has also thrown light on the control of apospory, a form of agamospermy (seeds without sex) in the New Zealand grass Cordateria.

2005 M. Fenner & K.Thompson Ecol. of Seeds i. 3 The advantages of agamospermy are not well established. It may be useful in certain circumstances to have the benefits of seeds..without the costs of sexual reproduction.

Derivatives

agamoˈspermic adj.

ΚΠ

1940 Hereditas 26 176 A single Swiss agamospermic strain was, indeed, found to have 33 as its typical chromosome number.

1974 New Phytologist 73 1243 Pseudogamy is a type of agamospermic reproduction in which seed development is stimulated by pollination although the male nucleus does not fuse with the egg.

2010 B. D. Booth et al. Invasive Plant Ecol. (ed. 2) v. 67 A high population of the species in dandelions, hawkweeds (Hieracium spp.) and raspberries are also agamospermic.

This is a new entry (OED Third Edition, September 2012; most recently modified version published online December 2021).

单词	agamospermy
释义	agamospermyn. Brit. /əˈɡamə(ʊ)ˌspəːrmi/, /ɛɪˈɡamə(ʊ)ˌspəːrmi/, /ˈaɡəmə(ʊ)ˌspəːmi/, U.S. /eɪˈɡæməˌspərmi/, /ˈæɡəmoʊˌspərmi/ Origin: A borrowing from Greek, combined with aborrowing from Greek, combined with an English element; modelled on a German lexical item. Etymons: Greek ἄγαμος , Greek σπέρμα , -y suffix³. Etymology: < ancient Greek ἄγαμος unmarried (see agamous adj.) + σπέρμα seed (see sperm n.) + -y suffix³, after German Agamospermie (G. Täckholm 1922, in Acta Horti Bergiani 7 372). Compare earlier agamospermous adj. Botany. Asexual reproduction occurring in certain plants in which seeds are produced from unfertilized ovules. 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- 1939 Hereditas 25 289 According to the terminology introduced by Edman (1931)..agamospermy comprises the phenomena of diplospory, apospory and nucellar embryony. 1958 F. C. Elliott Plant Breeding & Cytol. i. 41 Apomictic reproduction may be divided into reproduction by means of seeds (agamospermy) and vegetative formations such as bulbils, runners, etc. (vegetative reproduction). 1979 Nature 22 Mar. 306/3 Ultrastructural work has also thrown light on the control of apospory, a form of agamospermy (seeds without sex) in the New Zealand grass Cordateria. 2005 M. Fenner & K.Thompson Ecol. of Seeds i. 3 The advantages of agamospermy are not well established. It may be useful in certain circumstances to have the benefits of seeds..without the costs of sexual reproduction. Derivatives agamoˈspermic adj. ΚΠ 1940 Hereditas 26 176 A single Swiss agamospermic strain was, indeed, found to have 33 as its typical chromosome number. 1974 New Phytologist 73 1243 Pseudogamy is a type of agamospermic reproduction in which seed development is stimulated by pollination although the male nucleus does not fuse with the egg. 2010 B. D. Booth et al. Invasive Plant Ecol. (ed. 2) v. 67 A high population of the species in dandelions, hawkweeds (Hieracium spp.) and raspberries are also agamospermic. This is a new entry (OED Third Edition, September 2012; most recently modified version published online December 2021). < n.1939
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