Relationship Between Micromorphological Structure of Leaf Epidermis and Drought Resistance in Callisia repens.

[Objectives] To discuss the relationship between left epidermis structures and drought resistance. [Methods] The lea epidermis of Callisia repens was studied by optica microscope. [Results] The upper and lower epidermal cells of the leaves of Callisia repens arranged closely, and no cell gap was arranged. The morphology of the epidermal cells was hexagonal, few pentagon or heptagon, the equivalent elliptic aspect ratio was 1.20, the vertical wall was straight and there was no stomatal distribution. Compared with the epidermal cells, the morphology of the lower epidermal cells was irregular. The equivalent elliptic aspect ratio was 1.35, and the vertical wall was smooth and curved. The mean oval aspect ratio of the stomatal guard cells was 1.42, the average stomatal density was 11.79/mm², and the average stomatal index was 17.21. [Conclusions] These characteristics provide the theoretical basis for the drought resistance of Callisia erpens and the ornamental plants as roof greening. [ABSTRACT FROM AUTHOR]