Apomixis
replacement of the normal sexual reproduction by asexual reproduction, without fertilization
In botany, apomixis is asexual development of seed or embryo without fertilization.
Apomictically produced offspring are genetically identical to the parent plant, except in nonrecurrent apomixis. Its etymology is Greek for ἀπο- (apo-) "away from" and μίξις (míxis) "mixing".
Normal asexual reproduction of plants, such as propagation from cuttings or leaves, has never been considered to be apomixis. In contrast to parthenocarpy, which involves seedless fruit formation without fertilization, apomictic fruits have viable seeds containing a proper embryo, with asexual origin.
In flowering plants, the term "apomixis" is used in a restricted sense to mean agamospermy, i.e. clonal reproduction through seeds. Although agamospermy could theoretically occur in gymnosperms, it appears to be absent in that group.
Apogamy is a related term with a distinct meaning in plant reproduction. In plants with independent gametophyte generations, particularly ferns, apogamy refers to the development of a sporophyte directly from a cell or cells of the gametophyte without fertilization.
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This entry incorporates text from “Apomixis” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.