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#recurrent apomixis

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Recurrent apomixis produces embryos that are:

Recurrent apomixis termed diplosporous and aposporous types maintains chromosome number across cycles because embryo sac develops either from somatic nucellar cell dividing mitotically or from unreduced megaspore mother cell forming restitution nucleus after aborted meiosis. Egg cell therefore diploid containing full maternal chromosome complement 2n. Development proceeds parthenogenetically without fertilization, directly forming diploid embryo genetically identical to mother. Because ploidy same as maternal sporophyte, reproduction recurs stably, hence designation recurrent. Examples widespr

Ref: Nogler 1984 Gametophytic apomixis classification recurrent; Bicknell & Koltunow Review recurrent apomixis; Acquaah definition.