Allelopathic Effect of Aqueous Extracts from the Leaves of Peppermint (<i style='mso-bidi-font-style:normal'>Mentha × piperita</i> L.) on Selected Physiological Processes of Common Sunflower (<i style='mso-bidi-font-style:normal'>Helianthus annuus</i> L.)

  • Edyta SKRZYPEK The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Department of Biotechnology, Niezapominajek 21 St., 30-239 Krakow
  • Peter REPKA Matej Bel University, Faculty of Natural Sciences, Department of Biology and Ecology, Tajovského 40 St., SK-974 01 Banská Bystrica
  • Alina STACHURSKA-SWAKON Jagiellonian University, Institute of Botany, Kopernika 27 St., 31-501 Krakow
  • Beata BARABASZ-KRASNY Pedagogical University, Institute of Biology, Department of Botany, Podchorazych 2 St., 30-084 Krakow
  • Katarzyna MOZDZEN Pedagogical University, Institute of Biology, Department of Plant Physiology, Podchorazych 2 St., 30-084 Krakow

Abstract

In plants cultivation, some species influencing each other in a favorable manner, and others adversely affect the result of the release of physiologically active substances. These substances, called allelopathic compounds are excreted primarily by underground and aboveground plants’ organs or formed during the decomposition of their remains. Allelopathins show the inhibitory or stimulating effects on the processes of seed germination, growth and physiological activity of plants. The aim of
the study was to determine the allelopathic effects of aqueous extracts from the peppermint (Mentha × piperita L.) leaves at various concentrations (1, 3, 5, 10, 15%) on seeds germination and the selected physiological processes of common sunflower (Helianthus annuus L.) seedlings. Seeds were germinated and plants were grown under greenhouse conditions for 30 days.
Germination of sunflower seeds was reduced and electrolyte leakage from seedlings increased with increasing concentrations of aqueous extracts of the peppermint leaves. Increasing concentrations of aqueous extracts of peppermint also caused decrease of chlorophyll a and an increase of chlorophyll b content. The highest increase of the maximum photochemical efficiency of photosystem II was observed in H. annuus L. treated with 15% peppermint extract in comparison to the lower concentration of extracts and to the control. Non-photochemical and photochemical quenching and vitality index of photosystem II decreased with increasing concentrations of allelopathic substances in peppermint extracts.

Published
2015-12-10
How to Cite
SKRZYPEK, E., REPKA, P., STACHURSKA-SWAKON, A., BARABASZ-KRASNY, B., & MOZDZEN, K. (2015). Allelopathic Effect of Aqueous Extracts from the Leaves of Peppermint (<i style=’mso-bidi-font-style:normal’>Mentha × piperita</i> L.) on Selected Physiological Processes of Common Sunflower (<i style=’mso-bidi-font-style:normal’>Helianthus annuus</i&gt; L.). Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 43(2), 335-342. https://doi.org/10.15835/nbha43210034
Section
Research Articles