Abstract

The allelopathic effect of extracts from leaf litter of Betula pendula on the initial stages of ontogenesis (seed germination and growth and development of seedlings) of Rumex aquaticus has been studied in laboratory conditions. A significant decrease in laboratory germination by 1.5–36.3 times, depending on the concentration of the extract, is found. The change in the coefficient of inhibition confirmed the phytotoxicity of the investigated extract. The inhibitory effect on the seedlings at a concentration ≥50% of control is manifested in a decrease in the morphometric parameters of both the underground (root system and hypocotyl) and aboveground (cotyledon) parts of the seedlings.

中文翻译：

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西南桦叶片凋落物的化感作用对Rumex aquaticus L.成虫初期的影响

摘要

在实验室条件下，研究了桦（Betula pendula）叶片凋落物的提取物对水生Rumex本体发育（种子发芽和幼苗生长发育）初期的化感作用。根据提取物的浓度，发现实验室发芽量显着减少了1.5–36.3倍。抑制系数的变化证实了所研究提取物的植物毒性。浓度≥对照的50％对幼苗的抑制作用表现为幼苗的地下（根系和下胚轴）和地上（子叶）部分的形态参数降低。