Nuclear type is the most common type of endopserm development. In this type of development the nucleus
of the endoperm undergoes repeated divisions. Each nuclei formed is
arranged towards the periphery,
enclosing a large central vacuole. Cytokinesis begins from the periphery
towards the center making it
cellular at maturity.
Example: Wheat, maize, rice, sunflower.
Cellular type
In the cellular type of endosperm formation, every nuclear division is followed by cytokinesis, making it
cellular from the beginning.
Helobial type
In the helobial
type of endosperm formation, the first mitotic division is
followed by the process of
cytokinesis resulting in the formation of two unequal cells. Subsequent divisions are of the nuclear free type
making the endosperm cellular after cytokinesis or at maturity.
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