Allelopathic activity of Acer negundo L. leaf litter as a vector of invasion species into plant communities

Anastasia A Nikolaeva,Olga V Shelepova,Elena V Golosova,V.V Chepinoga,K.P Ma

doi:10.1051/bioconf/20213800088

Anastasia A Nikolaeva, Olga V Shelepova + Show 3 more

Open Access

https://doi.org/10.1051/bioconf/20213800088

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Abstract

The article shows the results of the influence of different concentrations of allelochemicals of Acer negundo L. leaf litter, germination energy, absolute germination of seeds and plant growth. The seeds of Raphanus sativus L. and Avena sativa L. were used as model objects. Active substances contained in leaf litter A. negundo, have a selective inhibitory effect on the germination of seeds and the growth of seedlings of monocotyledonous and dicotyledonous plants. The allelopathic effect of the fall is not a limiting factor for the germination of seeds of herbaceous plants of the above-ground cover of the studied plantation.

Highlights

Occupying more and more new territories, invasive species in secondary habitats represent an important factor in the transformation of natural ecosystems
Allelopathic substances contained in the leaf litter of A. negundo have an inhibitory effect on seed germination and seedling growth of only dicotyledonous plants
The use of solutions with low concentrations of chemical compounds had a stimulating effect on radish plants

Summary

Introduction

Occupying more and more new territories, invasive species in secondary habitats represent an important factor in the transformation of natural ecosystems. In Russia, in 18 out of 24 regions, this species is assigned to the group with the invasive status 1 (the most dangerous) Plant species from this group are actively introduced into natural and seminatural communities, change the appearance of ecosystems, disrupt successional relationships, act as edifiers and dominants. All this leads to the depletion of the species composition of the herbage, and in some cases to the formation of deadcovered, low-ornamental areas with almost complete absence of herbage [7]. There is evidence that more favorable conditions for the growth of native grasses are created under the canopy of A. negundo, and the germination of native grasses is not suppressed [8]

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