A comparative analysis of the stomatal parameters in Carpobrotus edulis (Aizoaceae) in specimens from invasive population in Egypt and from the greenhouse of the Main Botanical Garden of the Russian Academy of Sciences was carried out. The stomatal apparatus was studied by the method of lacquer replicas according to Polacci and characterized by 21 quantitative traits. Carpobrotus edulis is characterized by amphistomatic leaves with paracytic stomata. In Egyptian specimens, the stomata on the adaxial side of the leaf are more elongated than on lateral sides (L/D = 1.9 vs. 1.7), whereas in the greenhouse the stomata are more rounded (L/D = 1.6), and differences in stomatal shape between the adaxial and lateral sides were not found. In greenhouse, the stomata are 1.7–1.8 times larger than in nature, but their number decreases dramatically, in 5–7 times. Adaptation of C. edulis stomata to the conditions of greenhouse is revealed in the reduction of transpiration area by 3–4 times
L.V. Ozerova, Yu.K. Vinogradova
