autogamy


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Related to autogamy: Geitonogamy

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]

autogamy

/au·tog·a·my/ (aw-tog´ah-me)
1. self-fertilization; fertilization by union of two chromatin masses derived from the same primary nucleus within a cell.
2. reproduction in which the two gametes are derived from division of a single mother cell.

autogamy

(ô-tŏg′ə-mē)
n.
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)
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.
[auto- + G. gamos, marriage]

autogamy

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

autogamy

  1. the process by which the two parts of a divided cell nucleus reunite, as in some protozoans.
  2. self-fertilization in plants.
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References in periodicals archive ?
The weight of the seeds produced under free visitation was higher compared to those produced by autogamy and xenogamy in the Hyola 61 cultivar at Guarani das Missoes (see Table 1); however, no differences were observed for the other study sites (see Table 1).
The high level of autogamy suggested by the high percentage of alleles with different frequency among populations within the complexes, in spite of gene flow values close to one, could be a result of a strong negative farmer selection of cultivated plants with morphological characters suggesting introgression.
First, spatial separation of stigmas and anthers within flowers prevents autonomous autogamy and may limit the amount of autogamy caused by insect visitation (facilitated autogamy).
In contrast, families with wide stigma-anther separation or low autogamy rate presumably represent families with mating-system characters that promote outcrossing.
Anther Pollinators Treatment/ Treatment removal excluded pollen source Outcrossed yes yes Hand pollinated/ mixed pollen Selfed no yes Hand pollinated/ self-pollen Autogamy no yes Unmanipulated/ self-pollen Open yes no Open pollinated Natural no no Open pollinated Experimental pollination results for 1992 testing for self-pollination ability in Trillium grandiflorum.
The high incidence of hermaphroditism, self-compatibility, and autogamy are related to herbaceous life form, polyphilous pollination system, and climatic conditions, together the insularity of the Paraguana peninsula.
I then assigned these flowers to one of three pollination treatments: (1) spontaneous autogamy in the absence of insects; (2) self-pollination, and (3) cross-pollination with pollen from other plants in the same population.
granulosus (Smyth and Smyth 1969), but this is not necessarily an indication of autogamy.
P/O ratio also indicates that the species is xenogamous, although geitonogamy and autogamy (only induced, not spontaneous) were also recorded.
Autogamy and inbreeding depression in Mountain Laurel, Kalmia latifolia (Ericaceae) Am.