Морфометрическая изменчивость видов рода Cypripedium в коллекции Центрального сибирского ботанического сада СО РАН

Abstract

The article is devoted to the study of the genus Cypripedium L., three of the studied species of this genus are included in the Red Book of the Russian Federation. Biological material was taken from natural phytocenoses of the Novosibirsk region and the Altai Republic and introduced on the collection site of the Central Siberian Botanical Garden. The adaptive response of individuals was studied at the morphological level depending on environmental changes in ex situ conditions. The presence of all main stages in the phenological cycle in the adapting representatives of the three species (except for fruiting in Cypripedium × ventricosum) is an indicator of optimal ecological conditions for ex situ. A comparative analysis of morphometric characters in generative individuals was carried out and significant differences between in situ and ex situ were revealed. The adaptive changes associated with the response to natural abiotic ecological conditions were also identified. The revealed differences in morphometric data for the three species allow us to note the presence of a significant adaptive reaction in C. calceolus and C. macranthon and relative adaptive inertia in C. × ventricosum. The ecological optimum in abiotic factors for the three studied species from the genus Cypripedium is the indicators for 2018.The factors for 2018 became optimal for the developmentt of generative buds, which led to 100 % flowering of individuals in C. macranthon in 2019. We also performed a dental analysis of the lower surface of the bracts in three species and studied the morphology of the stomatal apparatus. We have noted significant differences between the species, under the same eco-conditions, in the size of stomata and their number per 1 cm2.