The nuclear endosperm is a type of endosperm found in cereals. This is the most common type of endosperm.
Nuclear Endosperm: It is the most common type of endosperm found. Here PEN divides repeatedly (mitotic division) without cytokinesis. It results in the formation of a large number of free nuclei in the cell.
A large central vacuole is formed and nuclei get arranged at the periphery. There are more nuclei at the chalazal and micropylar end, compared to the sides.
At this stage, cell wall formation takes place from the periphery towards the center and multicellular endosperm is formed. Examples: maize, rice, wheat, cotton, and sunflower.