For citation:
Epifanov V. S., Kondrateva A. O., Kasatkin M. Y., Kashin A. S. Variability of tepal’s bend shape in some Colchicum s.l. species of European Russia. Izvestiya of Saratov University. Chemistry. Biology. Ecology, 2025, vol. 25, iss. 4, pp. 463-468. DOI: 10.18500/1816-9775-2025-25-4-463-468, EDN: XBAXMB
Variability of tepal’s bend shape in some Colchicum s.l. species of European Russia
The aim of this work was to identify the degree of tepal bend shape variation in representatives of six Colchicum s.l species: C. laetum L., C. ancyrense B. L. Burtt, C. bulbocodium var. versicolor (Ker Gawl.) K. Perss, C. umbrosum Steven, C. trigynum (Steven ex Adam) Stearn, C. eichleri (Regel) K. Perss. In each of the 53 populations located in the territory of European Russia, 30 plants were studied. The analysis of tepal bend shape variation was carried out using the geometric morphometry method. Principal Component Analysis (PCA) showed that C. laetum and C. bulbocodium var. versicolor, previously attributed to diff erent genera, has the highest level of variation at the intra- and interspecifi c levels. The other species were characterized by a smaller range of variation. In the specimens of C. eichleri and C. trigynum, previously allocated to a separate genus Merendera, the tepals had a similar shape, which indicates the validity of combining them into one species with the priority name C. trigynum. In general, the obtained results serve as an additional argument in favour of combining Colchicum, Bulbocodium and Merendera into one genus Colchicum s.l.
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