EN
The article focuses on several aspects of flax embryo development in situ and in vitro. It describes the ultrastructural (plastid development), cytological and morphological events during zygotic embryo development and also some biochemical changes during the process, such as hormone level, accumulation of reserve materials, pigment quality and quantity, total protein analysis, and isozyme analysis. Next it characterizes the development of the zygotic embryo excised in different developmental stages and completing its development in vitro. Finally it follows the induction of direct and indirect somatic embryo formation in flax and the induction and formation of the androgenic embryo in anther cultures.