bibliography:

Kucher, O. 2020. Specifics of the ontogenesis of Grindelia squarrosa in populations from eastern Ukraine. Geo&Bio, 19: 59–64. (In Ukrainian)

doi: http://doi.org/10.15407/gb1907

authors (with orcid and affiliation):

Oksana Kucher orcid http://orcid.org/0000-0002-5665-288X

M. G. Kholodny Institute of Botany, NAS of Ukraine (Kyiv, Ukraine)

pdf: pdf

summary:

Results of studying of the ontomorphogenesis of the North American adventive species G. squarrosa in its secondary range in natural conditions of eastern Ukraine are presented. The scheme of ontomorphogenesis is given and age states are selected (seeds, seedlings (p), juvenile (j), immature (im), virginal (v), young generative (g1), medieval generative (g2), aging (g3), subsenile and senile plants) and their characteristics are presented. It was found that the number of seedlings differs significantly during the growing season, the germination of seeds is also affected by temperature, the largest number of seedlings is observed at values from +25 to +27 C˚ in the spring. The choice of the study site is not accidental — the locality of the species in the Starobilsk grass-steppe meadow of Luhansk Oblast in the floodplain of the Siversky Donets River is one of the primary centres of deposition and distribution of G. squarrosa and its current high invasive status. The research was conducted according to the generally accepted methods of Zlobin at four localities. The density, ontogenetic and vitality structure of populations were studied. Each population was surveyed five times a year at the beginning (end of May) in the middle (June; early and late July) and at the end of the growing season (September). It was determined that the species is characterised by non-simultaneous germination of seeds and the formation of monodominant groups; the species acts as a co-dominant in steppe groups, prefers sandy loam and clayey loam and gravely soils, rarely occurs on gravel and dense clay substrate. The period of ontogenetic development of the studied species lasts 1–2 years. As a result of studying the ontogenetic structure of model populations of G. squarrosa, it was found that they are dominated by plants of pregenerative state, i.e. the spectrum of age groups is left-sided, characterised by positive asymmetry with peak on plants of younger age group, full-fledged populations and has high recovery indices.

Key words:

Grindelia squarrosa, ontogenesis, age stage, population research, east of Ukraine.

Correspondence to:

O. Kucher; M. G. Kholodny Institute of Botany, NAS of Ukraine; Tereshchenkivska St. 2, Kyiv, 01004 Ukraine; e-mail: kucher.oksana29@gmail.com; orcid: 0000-0002-5665-288X

References

Anastasiu, P., G. Negrean. 2005. Alien plants in Romania. Analelestiintifice ale Universitatii “Al. I Cuza” Iasi, 51 (s II a Bilogie Vegetala), 87–96.

Bartoli, A., R. D. Tortosa. 2012. Revision of the North American species of Grindelia (Asteraceae). Annals of the Missouri Botanical Garden, 98: 447–513. https://doi.org/10.3417/2008125

Bilyk, G. I. 1950. New adventive plant for the Ukrainian SSR flora — Grindelia squarrosa (Pursh) Dunal. Botan. Zhurnal, USSR AS, 27 (7): 76–79. (In Ukrainian)

Bilyk, G. I., V. S. Tkachenko. 1977. New location of Grindelia squarrosa (Pursh) Dunal in Ukraine. Ukr. Botan. Zhurn., 34 (1): 92–93. (In Ukrainian)

Bilyk, G. I., V. S. Tkachenko. 1963. Grindelia squarrosa (Pursh) Dun. in the floodplain of the Siversky Donets. Ukr. Botan. Zhurn., 20 (4): 16–21. (In Ukrainian)

Botta-Dukát, Z. 2008. Invasion of alien species to Hungarian (semi-)natural habitats. Acta Botan. Hung., 50 (Suppl.): 219–227. https://doi.org/10.1556/ABot.50.2008.Suppl.11

Drake, J. A. (ed.). 2009. Handbook of Alien Species in Europe. Springer Science + Business Media B. V., 1–421. (Series: Invading Nature Springer Series in Invasion Ecology; Volume. 3). https://doi.org/10.1007/978-1-4020-8280-1

Gleason, H. A., A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent. 2nd ed. New York Botanical Garden, New York, 1–910.

Gudžinskas, Z. 1997. Conspectus of alien plant species of Lithuania. 4. Asteraceae. Bot. Lith., .3 (4): 335–366.

Jehlik, V., J. Majekova, M. Zaliberova. 2013. New discovered adventives plants from eastern Slovakia. Thaiszia. J. Bot., Košice, 23 (1): 61–66.

Jinjolia, L., N. Shakarishvili. 2014 Grindeli asquarrosa (Pursh) Dunal — a new alien genus and species for flora of Georgia. Bull. Georg. Natl. Acad. Sci., 8 (3): 64–68.

Klymenko, O. L., V. O., Menshova. 2012. Specifics of ontogenesis of species of genus Grindelia Willd. Plant introduction, 4: 48–52. (In Ukrainian)

Kucher, O. O. 2012. An invasive species of Grindelia squrrosa (Pursh) Dunal. on the territory of eastern Ukraine. Dynamics of biodiversity 2012. Ed. I. V. Zagorodniuk. Luhansk Taras Shevchenko National University, Luhansk, 96–99. (In Ukrainian)

Kucher, O. O. 2015. Transformer species in the in the flora of Starobisk grass-meadow steppe (Ukraine). Boiodiv. Res. Conserv., 40: 49–58. https://doi.org/10.1515/biorc-2015-0034

Myrza, M., L. Kuharskaya, D. Gohu. 1987. Distribution of Grindelia squarrosa (Pursch.) Dun. on the territory of Moldova. Ukr. Botan. Zhurn., 44 (6): 42–44. (In Russian)

Parfenov. V. I. (ed.). 1999. Keys to vascular plants of Belarus. Design PRO, Minsk, 1–327. (In Russian)

Pol'ovyj, E. V. 2013. Ecological features of Grindelia squarrosa as invasive species on the territory of Savranka river basin. Actual Problems of Botany and Ecology. Proceedings of the Conference, Schokine, 180–181.

Protopopova, V. V., M. V. Shever, S. L. Mosyakin, et al. 2009. Transformers-species in the flora of the Northern Black Sea Coast. Ukr. Botan. Zhurn., 66 (6): 770–782. (In Ukrainian)

Protopopova, V. V., V. S. Tkachenko, 1979. History and Propagation of Grindelia squarrosa (Pursh) Dunal. Ukr. Botan. Zhurn., 36 (5): 457–461. (In Ukrainian)

Protopopova, V. V., M. V. Shevera. 2014. Ergasiophytes of the Ukrainian flora. Biodiv. Res. Conserv., 35 (1): 31–46. https://doi.org/10.2478/biorc-2014-0018

Pyšek, P., J. Sádlo, B. Mandák. 2002. Catalogue of alien plants of the Czech Republic. Preslia, 74 (2): 97–186.

Reynolds, S. C. P. A Catalogue of Alien Plants in Ireland. Glasnevin, National Botanic Gardens, Occasional Papers, 14: 1–41.

Strother, J. L., M. A. Wetter. 2006. Grindelia. In: Flora of North America North of Mexico. Volume 20: Magnoliophyta: Asteridae (part 7: Asteraceae, part 2). Oxford, New York, 424–436.

Truta, E., G. Vochita, A. Oprea, C. Sibru. 2012 Karyotype traits in Grindelia squarrosa (Pursh) Dunal (Asteraceae), an invasive plant in Romania Silvae Genetica, 61 (4–5):179–185. https://doi.org/10.1515/sg-2012-0023

Vladimirov, V., A. S. Petrova. 2012. Grindelia squarrosa: a new alien species for the Bulgarian flora Phytol. Balcan., 18 (3): 315–318.

Zlobin, Yu. A. 2009. Population Ecology of Plants: the Present State, the Points of Growth. University Book, Sumy, 1–263. (In Russian)

Zlobin, Yu. A. 2001. Principles and Methods of Studying Cenotic Population of Plants. Kazan University, Kazan, 1–146. (In Russian)