Also found in: Encyclopedia, Wikipedia.


Transfer of pollen from an anther of one flower to a stigma of another flower on the same plant.

[Greek geitōn, geiton-, neighbor + -gamy.]

gei′to·nog′a·mous adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Botany) botany of or relating to geitonogamy
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
These studies attribute the reduction in genetic diversity to a low number of pollen donors and a subsequent increase in geitonogamous matings.
Self-compatibility resulting from geitonogamous crosses was observed in Dorstenia arifolia, yet no fruit development by apomixis was observed (Table 1).
oleifera is a geitonogamous and xenogamous diploid species (2n = 28; n = 14 chromosomes) whose gene pool and genetic base are expected to be wide with higher productivity [11, 12, 13, 14].
Consequences of floral complexity for bumblebee-mediated geitonogamous self-pollination in Salvia nipponica Miq.
The clonal nature of eelgrass makes geitonogamous selfing likely at finer scales, where a ramet may be in the presence of sister ramets, and the limited dispersal ability of sexual propagules makes escaping the spread of one's own genet uncertain [8, 9, 34].
This species has been reported as an inbreeder favoring geitonogamous pollination (87% fruit set) compared with 53.33 percent fruit set under xenogamous conditions (Chauhan et al.
Although flowers with a wide availability of resources are heavily visited, many self-compatible species have a high degree of inbreeding caused by geitonogamous pollination, apomixis, and also automatic self-pollination (BAWA, 1979).
From the orthogonal contrasts, flowers of autogamous racemes produced more seedless pods than geitonogamous flowers (G = 5.1, P = 0.024), which in turn set more seedless pods than xenogamous racemes (G = 11.2, P = 0.001).
Nonetheless, individual pollen loads are usually below levels that provide higher probability of retention, and commonly observed geitonogamous pollinations also appear to conflict with expected strong selection on moths to provide pollinations that give high retention probability.
For clonal species with SI systems, geitonogamous pollination within genetically uniform patches causes a reduction in MA that hampers sexual reproduction (Thien et al.
nectar production is an adaptation to decrease geitonogamous inbreeding
Comparing intact and emasculated flowers open on the same plant on the same day will underestimate autogamy, because emasculation of one flower potentially reduces the geitonogamous pollen received by the other.