Rare species of genus Hemerocallis L. in Central Siberian Botanical Garden
Lyudmila L. Sedelnikova, Doctor of Biological Sciences, Leading Researcher
Central Siberian Botanical Garden of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia, lusedelnikova@yandex.ru, https://orcid.org/0000-0002-1122-2421
Abstract
The article presents the long-term results of seasonal development and morphobiological features of five species of the genus Hemerocallis (daylily, hemerocallis) cultivated in the forest-steppe zone of Western Siberia. It was found that flowering of daylilies occurs from May 3 to the second decade of June in early flowering species (H. minor, H. lilio-asphodelus, H. citrina, H. middendorffii) at a sum of positive temperatures from 333 to 789 °С. The summer-flowering species H. fulva blooms in July at a sum of positive temperatures over 971 °С. Variability of morphometric parameters and phenological phases of development is noted in connection with meteorological conditions of the vegetation periods of 2019—2024. Daylilies are characterized by day and night types of flowering. Within the entire inflorescence (synflorescence), H. citrina, H. lilio-asphodelus, H. minor, H. fulva have divergent flower blooming. In H. middendorfii flowers in the inflorescence bloom acropetally from the periphery to the center according to the centripetal type. High content of biologically active substances was found in the leaves: tannins in H. minor (20.18%), flavonols in H. fulva (3.04%), catechins in H. lilio-asphodelus (0.67%); in the flowers: protopectins in H. fulva (up to 6.37%), pectins in H. citrina (1.76%), catechins in H. lilio-asphodelus (0.84%). The content of tannins in the leaves of plants of all species is 2.4—6.3 times higher than in flowers, flavonols — 2.0—4.2 times. The main share in the sum of pectin substances in the aboveground organs is occupied by protopectins and their amount in flowers is 2—5 times greater than pectins. The species-specificity of the concentration of biologically active substances in the above-ground organs of daylilies and their variation depending on the hydrometeorological conditions of the seasonal period are noted. Cultivated Hemerocallis species in the forest-steppe of the Ob region have a long spring-summer-autumn phenorhythmotype of development, bear fruit and reproduce well vegetatively, are resistant and decorative, demonstrate a significant quantitative content of phenolic and pectin substances and can be used not only in the practice of ornamental floriculture when forming flower beds of various types, but also as a search for new sources of bioactive agents.
Key words
Daylily, species, growth, development, morphometric features, inflorescence, leaf, flower, biologically active substances, forest-steppe, Western Siberia.
Acknowledgments: The work has been carried out within the framework of the state assignments of the Central Siberian Botanical Garden of the Siberian Branch of the Russian Academy of Sciences under project No. АААА-А21-121011290025-2 “Analysis of biodiversity, conservation and restoration of rare and resource species using experimental methods”. The author is grateful to T. A. Kukushkina for conducting analyses of the content of biologically active substances
For citation:
Sedelnikova L. L. Rare species of genus Hemerocallis L. in Central Siberian Botanical Garden. Vestnik of Orenburg State Pedagogical University. Electronic Scientific Journal, 2025, no. 3 (55), pp. 34—45. DOI: https://doi.org/10.32516/2303-9922.2025.55.3.
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