Ключевое слово: «stomatal apparatus»

The adaptation responses of introduced Dracocephalum grandiflorum L. to the conditions of Central Yakutia were studied by analyzing the dynamics of the stomatal apparatus parameters and photosynthetic pigments during the growing season. The stomatal apparatus demonstrated high plasticity, manifested in the two-phase dynamics of stomatal density and the sensitivity of their openness to temperature stress. Specific dynamics were revealed with a peak in chlorophyll content in August (23.90 μg/ml), indicating a shift in the period of active vegetation. A consistently high level of carotenoids (3.00 – 4.37 μg/ml) was confirmed as an indicator of an effective photoprotective mechanism. The complex of identified physiological and anatomical adaptations proves the successful acclimatization of the species and its potential for introduction in the region. The results of the study demonstrate the effectiveness of using stomatal and pigment analysis methods as one of the tools for monitoring the condition of introduced plants.