Abstract: A series of events during the development of the megaspore and the female gametophyte of Panicum miliaceum were studied by means of the regular histo-cytological and histochemical technique. The following is the main conclusions.The gynoecium is digynia, one locule, containing one hemianatropous ovule which is bitegminal and tenuinucellate. The micropyle is formed by the inner integument.The archesporical cell was hypodermal in origin and directly functioned as the megaspore mather cell. The meg...

Key words: Panicum miliaceum L., Development of megaspore, Female gametophyte