Embryoid

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Embryoid

Embryoid is a small, well organised structure comparable to the sexual embryo, which is produced in tissue culture of dividing embryogenic potential somatic cells.

Embryos formed in cultures have been variously designated as accessory embryos, adventive embryos, embryoids and super- numeracy embryos.

Types of Embryos:

1. Zygotic Embryos:

These formed by fertilized egg or the zygote.

2. Non-Zygotic Embryos:

a) Somatic Embryos:

Those formed by Sporophytic cells either in vitro or in vitro. Such somatic embryos arsing directly from other embryos or organs are termed adventive embryos.

b) Parthenocapic Embryos:

Those formed by unfertilized egg.

c) Androgenic Embryos:

Those formed by the male gametophyte.

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