self-fertilization


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Related to self-fertilization: cross-fertilization

self-fer·til·i·za·tion

(self'fer'til-i-zā'shŭn),
Fecundation of the ovules by the pollen of the same flower, or of the ova by the spermatozoa of the same animal in hermaphroditic forms; denoting an extreme type of inbreeding seen in certain plants and animal forms that produce both male and female gametes.

self-fertilization

(sĕlf′fûr′tl-ĭ-zā′shən)
n.
Fertilization by male gametes from the same individual, as by sperm from the same animal in hermaphroditic species or by pollen from the same plant.

self′-fer′til·ized′ (-īzd′) adj.
self′-fer′til·iz′ing adj.

self-fertilization

the fusion of male and female GAMETES from the same HERMAPHRODITE individual. Self-fertilization is fairly rare in animals (occurring, for example, in some snails and nematode worms) but is common in some plant groups. see SELF-POLLINATION. Compare CROSS-FERTILIZATION.
References in periodicals archive ?
Because of this mode of reproduction, we asked whether self-fertilization could occur when non-self sperm were also present.
The progeny from these crosses indicate that both high levels of outcrossing and self-fertilization can occur in creeping bentgrass.
In some genetic models of the evolution of self-fertilization, inbreeding depression plays a crucial role in determining whether or not selfing will be selectively favored (Lande and Schemske 1985; Charlesworth and Charlesworth 1987; Charlesworth et al.
Inbreeding depression (Sabbadin, 1971) is likely to exert selective pressure to prevent self-fertilization, even though selfing would be a possible mechanism to assure fertilization in the narrow time window in which fertilization can produce functional embryos.
Do self-fertilization and genetic drift promote a very low genetic variability in the allotetraploid Bulinus truncatus (Gastropoda: Planorbidae) populations?
membranacea zooids promotes cross-fertilization, but still allows self-fertilization to occur.
Of the 70 maternal plants for which seed-set was estimated, the mean percent filled seeds for selfed and outcrossed flowers ranged from 0% to 94% and only three maternal plants (1 in population T4, 2 in population T26) exhibited higher mean seed-set upon self-fertilization than cross-fertilization.
regnans there may be little selective disadvantage to self-fertilization. First, excess pollen, and large numbers of small simple flowers and seeds, is a very low-cost reproductive strategy (Harper 1977).
In hermaphrodites, self-incompatibility produces differences in fertilization success that are similar in magnitude to among-species crosses, which could result in fairly strong selection pressures against self-fertilization when non-self eggs are available.
The green dwarf coconut has slow growth, reproduction through self-fertilization, greater precocity and produces a large number of fruits during the entire production period, in relation to the giant coconut.
Quantitatively, heterosis is measured by the difference between the value obtained in generation Ft and the mean value of the parents, being maximum in generation [F.sub.1] In diploid species, heterozygosis is expected to be reduced to half every self-fertilization generation due to endogamy (WRIGHT, 1950).
Such isolation could occur as a consequence of changes in flowering time (Lumaret et al., 1987; Thompson and Lumaret, 1992; Ramsey, 2011), increased levels of self-fertilization (Stebbins, 1950; Barringer, 2007) and/or changes in the activity and composition of pollinator communities (Thompson and Merg, 2008; Segraves and Anneberg, 2016).