The paper presents the results of studies on the influence of selected concentrations (10–100 mg L⁻¹) of heavy metals (Cd, Co, Cr, Cu, Fe, Hg, Mn, Mo, Ni, Pb, Zn) and metalloids (As, Sb, Se) on the germination and root elongation of garden cress (Lepidium sativum L). There are not many studies on phytotoxicity of heavy metals and metalloids with the complex use of single plant species so far. On the basis of the germination index (GI) and inhibition concentration IC50, the following order of phytotoxicity of the tested elements was determined: Se> As> Hg> Sb > Mo > Cd> Co > Zn > Ni. The other metals showed no phytotoxicity or even stimulating effect. In our study the stimulating effect of the majority of Pb concentrations and the lowest concentrations of Cd and Hg has been revealed. These metals do not play any role in living organisms, however some authors confirm their stimulating effect on plants at low concentrations. Toxic concentration of metals and metalloids calculated as IC50 are lower than the concentration calculated as GI (not phytotoxic). It is well known that seeds are more independent and tolerant to toxicants when they contain reserve substances which are used during the germination period. On the basis of conducted research, high tolerance of L. sativum to heavy metals and metalloids was found, which may indicate its usefulness for phytotoxicity assessment of leachate from contaminated soil or waste (e.g. foundry waste) and its application for bioremediation to manage heavy metal pollution of soils or foundry wastes containing heavy metals and metalloids. The understanding of heavy metal and metalloids toxicity will facilitate bioremediation.

本文介绍了重金属（Cd、Co、Cr、Cu、Fe、Hg、Mn、Mo、Ni、Pb、Zn）和类金属的选定浓度（10–100 mg L ^-1）影响的研究结果(As、Sb、Se) 对水芹 ( Lepidium sativum L) 发芽和根伸长的影响。迄今为止，针对单一植物物种复合使用重金属和类金属的植物毒性研究并不多。根据发芽指数（GI）和抑制浓度IC50，确定受试元素的植物毒性顺序为：Se>As>Hg>Sb>Mo>Cd>Co>Zn>Ni。其他金属没有表现出植物毒性，甚至没有刺激作用。我们的研究揭示了大多数 Pb 浓度以及最低 Cd 和 Hg 浓度的刺激作用。这些金属在生物体中不起任何作用，但一些作者证实它们在低浓度下对植物有刺激作用。以 IC50 计算的金属和准金属的毒性浓度低于以 GI 计算的浓度（无植物毒性）。众所周知，当种子含有在发芽期间使用的储备物质时，它们对有毒物质更加独立和耐受。在进行的研究的基础上，发现了苜蓿对重金属和类金属的高耐受性，这可能表明它可用于污染土壤或废物（例如铸造废物）渗滤液的植物毒性评估及其在生物修复管理重金属方面的应用。含有重金属和类金属的土壤或铸造废物的污染。对重金属和类金属毒性的了解将有助于生物修复。