A Critical Review of the Female Gametophyte in the Podostemaceae - Past, Present and Future Studies
Abstract/ Overview
Anoverview of the habit and habitat of Podostemaceae is briefly discussed. Then,the paper
attempts to review the past and present female gametophyte studies in the Podostemaceae. It trace the course
and major achievements during the megasporogenesis, megagametogenesis and embryogenesis studies in the
Podostemaceae. The evolutionary and functional significance of polarity during two-nucleate stage division of
the megagametogenesis is discussed. Antipodal cell in the organized female gametophyte is discussed. Possible
courses and causes of single fertilization and nucellar plasmodium organization are suggested. Then, provides
and points out areas of special attention and limitations in the study of female gametophyte in future. Attempts
are made to relate the ontogenies found in the family to plants with similar single fertilization phenomenon, for
example Spinacia and Oenothera. Their embryological significances in the development of the female
gametophyte in the angiosperms and gymnosperms are discussed.
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