Seedling Cultivation of Doritis pulcherrima Lindl. with Mycorrhizal Fungi Ultrastructural Observations on Megasporogenesis in Doritis pulcherrima (Orchidaceae) Seedling Cultivation of Doritis pulcherrima Lindl. with Mycorrhizal Fungi Study on the Relationship between Embryo Genesis and Isozymes Divergence in Doritis pulcherrima Lindl. THE STUDIES OF THE FEMALE GAMETOPHYTE DEVELOPMENT AND THE EMBRYOGENESIS IN DORITIS PULCHERRIMA LINDL.