Structural relationships among central cell and egg apparatus cells of barley as related to transmission of male gametes

Structural relationships among central cell and egg apparatus cells of barley as related to transmission of male gametes

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Barley embryo sacs were click here examined using light and electron microscopy before and during fertilization.One synergid degenerates after pollination with loss of nuclear and cytoplasmic organization and cell wall material between synergid and central cell.Some wall between egg and central cell is also lost.After pollen tube discharge into the degenerate synergid, the male gametes leave the synergid 30x24x24 wall cabinet entering a pocket of central cell cytoplasm separated from the synergid only by membranes.

This could provide for efficient gamete transmission and possible recognition through specific membrane contacts.