A portion of endosperm (PO:0009089) tissue in which the first karyokinetic event is accompanied by the formation of a horizontal wall which divides the embryo sac central cell (PO:0020090) into unequal regions. The larger one is the micropylar chamber in which cytokinesis does not occur and the smaller one is the chalazal chamber. [ ISBN:0080374913 ]
术语信息
A portion of endosperm (PO:0009089) tissue in which the first karyokinetic event is accompanied by the formation of a horizontal wall which divides the embryo sac central cell (PO:0020090) into unequal regions. The larger one is the micropylar chamber in which cytokinesis does not occur and the smaller one is the chalazal chamber.