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Type of publication: conference paper
Type of publication (PDB): Tezės kituose recenzuojamuose leidiniuose / Theses in other peer-reviewed publications (T1e)
Field of Science: Ekologija ir aplinkotyra / Ecology and environmental sciences (N012)
Author(s): Baležentienė, Ligita
Title: Seed germination inhibition by hogweed Heracleum sosnowskyi
Is part of: International Society of Chemical Ecology 28th Annual Meeting, Vilnius, Lithuania, July 22-26, 2012 : Abstracts Vilnius, 2012
Extent: p. 215
Date: 2012
ISBN: 9786094590856
Abstract: Assessment of the total phenols content (TPC) and biochemical impact of H. sosnowskyi on perennial ryegrass (monocots) and winter rapeseed (dicots) seed germination was carried out ex situ. Aqueous extracts of 2-yr. H. sosnowskyi exhibited higher phytotoxicity if compared with 1-yr. plant extracts. According to the results obtained, all parts of H. sosnowskyi produce phenolics, and thus inhibit acceptor-species seed germination. The character of phytotoxic impact of H. sosnowskyi aqueous extracts on the germination data significantly depended on plant age (1-year, 2-year), plant parts extracted (shoot; stem, leaf, blossom, seed; root), growth stage (rosette-ripening) and extract concentration (0.02-0.2%) (1). The most pronounced phytotoxicity of H. sosnowskyi was recorded at flowering stage due to highest TPC (30.42 mg ml"1). The results suggested that the invasive plant species may acquire spreading advantage in new territories by using allelochemicals to inhibit germination. Nonetheless, species evidence for allelopathic effects should not be restricted to analysis of the plant extracts in the lab, but also based on research in natural environment
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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