Genesis of the generative structures &lt;i&gt;Platycodon grandiflorus &lt;/i&gt;(family Сampanulaceae)
Journal: Bulletin of the State Nikitsky Botanical Gardens
Year: 2021

The article presents the research results of the genesis of the elements of the microsporangium wall, sporogenous tissue, microspores, megaspores, male and female gametophytes of the Platycodon grandiflorus . The types of formation of the structures mail generative sphere (dicotyledonous type of microsporangium wall formation, simultaneous type of the tetrad microspores development, 3-cells of the pollen grains with 6-th pores, Polygonum - type of the formation embryo sac) have been established.