Development of Zoosporangium and Liberation of Zoospores in Achlya aplanes Maurizio var. indica Sak. et Dayal

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Abstract
The 4 principal stages in the development of the sporangium of A. aplanes var. indica were observed in vivo and in fixed condition. They are: (1) inflow of protoplasm resulting in the formation of sporangium initials and basal septum; (2) stage of preliminary division; (3) homogenous stage; (4) stage of final division and formation of zoospores. The zoospores after liberation undergo a period of rest, after which they germinate directly by germ tubes. There is no nuclear division in the sporangium.