au·tog·a·my

(aw-tog'ă-mē),

A form of self-fertilization in which fission of the cell nucleus occurs without division of the cell, the two pronuclei so formed reuniting to form the synkaryon; in other cases, the cell body also divides, but the two daughter cells immediately conjugate.

Synonym(s): automixis

[auto- + G. gamos, marriage]

Farlex Partner Medical Dictionary © Farlex 2012

autogamy

(ô-tŏg′ə-mē)

Self-fertilization, especially:

a. Fertilization of a flower by its own pollen.

b. The union of nuclei within and arising from a single cell, as in certain protozoans and fungi.

au′to·gam′ic (ô′tō-găm′ĭk), au·tog′a·mous adj.

au·tog·a·my

(aw-tog'ă-mē)

[auto- + G. gamos, marriage]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

autogamy

Self-fertilization. This can occur by the fusion of two split nuclei.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

autogamy

the process by which the two parts of a divided cell nucleus reunite, as in some protozoans.
self-fertilization in plants.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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References in periodicals archive

Autogamy historically enjoyed some amount of complacency as to its

Optimization theory in plant evolution: an overview of long-term evolutionary prospects in the angiosperms

t 0.50 0.64 0.32 0.56 SE 0.071 0.076 0.146 0.021 [S.sub.1] 0.50 0.36 0.68 0.44 v 0.914 0.949 1.02 0.850 [S.sub.0] 0.52 0.37 0.69 0.49 Autogamy of 0.255 0.408 0.468 0.464 progeny plants 0.016 0.028 0.033 0.021 RESULTS

Inbreeding depression in four populations of Collinsia heterophylla Nutt (Scrophulariaceae)

In the other Wahlenbergia species of the archipelago, autogamy occurs at the end of the flower lifetime, when the stigmata branches recurve almost 360[degrees] and contact pollen held on the style.

A survey of floral traits, breeding systems, floral visitors, and pollination systems of the angiosperms of the Juan Fernandez Islands (Chile)

The shift from xenogamy to autogamy was more pronounced than the shift from autogamy to xenogamy.

Response to selection on autogamy in Phlox

Although AG-S4 was derived from MU81, autogamy is an unusual reproductive expression within this typically self-incompatible species.

Rhizomatous Lotus corniculatus L.: III. Introgression of rhizomes into autogamous germplasm

A comparable shift from allogamy to autogamy was achieved in Vitis (grape): Wild species and some primitive cultivars (dioecious) are cross-pollinators, whereas more modern cultivars (hermaphrodite) are self-pollinating (Olmo, 1995).

The cytological and genetical mechanisms of plant domestication exemplified by four crop models

Using anther-stigma distance as a proxy for degree of autogamy, I concluded that 7 taxa are predominantly autogamous, 8 taxa are predominantly allogamous, and 20 taxa have intermediate mating systems.

Evolution of plant pollination systems: hypotheses and tests with the neotropical vine Dalechampia

AUTOGAMY A Solitary B Self-taught C Self-fertilisation who am I?

TIME OUT EXTRA

In epiphytic plants, autogamy has been interpreted as a mechanism to compensate for their apparent reduced capacity to attract pollinators due to their low floral display and highly aggregated spatial distribution in the forest canopy (Bush & Beach, 1995).

Alta capacidad de autofecundacion y baja visitacion de polinizadores en la epifita polinizada por colibries Pitcairnia heterophylla (Bromeliaceae) en un bosque montano en Costa Rica

Br.: Taxonomy, phytogcography, autogamy and myxospcrmy.

Fruit and seed dispersal of Salvia L. (Lamiaceae): a review of the evidence

Types of crosses included: (1) no hand-pollination to test for automatic self-pollination (autogamy).

Pollination and reproductive biology in a hill prairie population of Nothocalais cuspidata (Asteraceae: cichorieae)

Autogamy might be favored through their contacts with the reproduc tive structures of a single flower, with occasional transfers of autogamic pollen.

Comportamiento y diversidad de visitantes florales en Campomanesia adamantium (Myrtaceae)