The development of Norway spruce somatic embryos visualized with different microscopic tools
Somatic embryogenesis represents a useful system for the study of the process of embryogenesis as well as a convenient system for the clonal propagation of conifers. It consists of 5 steps: induction of embryogenic culture from somatic cells of zygotic embryos; proliferation, i.e. the development and multiplication of early somatic embryos; maturation, desiccation, and germination followed by embling´s development.