The Structure of OryzaEmbryos and Their Dimorphic Cotyledons The Study of Relation between Differentiation Ability and Different Physiological States of Infloresence and Scutellum from Bread Wheat (Triticum aestivum L.) The Tridimensional Morphology of Rice Embryo Development with Special Reference to the Scutellum and the Coleoptile Ultrastructure of Maize Scutellum during Seed-seedling Transformation Cytochemical Localization and Histoelectrofocusing of Nonspecific α-Esterase in the Scutellum and the Aleurone Layer of Oat Seeds