Faculty of Environment, Jan Evangelista Purkyně University in Ústí nad Labem, Ústí nad Labem, Czech Republic.
Faculty of Plant Protection, Biotechnology and Ecology, National University of Life and Environmental Sciences, Kiev, Ukraine.
Rev Environ Health. 2019 Sep 25;34(3):283-291. doi: 10.1515/reveh-2018-0088.
The impact of plant growth regulators (PGRs) "Stimpo" and "Regoplant" on Miscanthus x giganteus (Mxg) biomass parameters was investigated when the plant was grown in military soils with different properties from Dolyna, Ukraine and Hradcany, Czech Republic. The results showed that PGRs positively influenced the biomass parameters when the plant was grown in soil in Dolyna with good agricultural characteristics, the influence of "Regoplant" was higher and the best results were obtained with combined treatment: application to rhizomes before planting and spraying on the biomass during vegetation. Using of PGRs did not improve the biomass parameters when the plant was grown in poor soil in Hradcany. In parallel the peculiarities of the metals uptake process were studied for the following metals: chromium (Cr), manganese (Mn), nickel (Ni), copper (Cu), zinc (Zn), strontium (Sr) and lead (Pb). The uptake behavior of the monitored elements differed based on the soil quality. According to the bioconcentration factor uptake of the abiogenic elements, Cr and Pb, was dominant in the plant roots in both soils, whereas Ni was not detected in any plant tissues. The behavior of biogenic elements (Mn, Cu, Zn) and their analogs (Sr) was different. Those elements were more intensively taken up in shoot tissues in low-nutrient sandy Hradcany soils, while they were mainly taken up in plant roots in fertile Dolyna soils. The unusual behavior of biogenic elements in the low-nutrient soils may be explained by the effect of stress. However, more research is needed focused mainly on soil properties and nutrient availability in order to confirm or disprove this hypothesis and to explore the cause of the stress. The summarized results here show that soil properties influenced Mxg biomass parameters, affected the uptake behavior of metals significantly and tested PGRs cannot be utilized universally in the production of Mxg in the poor military soils.
研究了植物生长调节剂（PGR）“Stimpo”和“Regoplant”对在乌克兰 Dolyna 和捷克共和国 Hradcany 具有不同特性的军用土壤中生长的芒属巨型杂交种（Mxg）生物量参数的影响。结果表明，当在具有良好农业特性的 Dolyna 土壤中种植植物时，PGR 对生物量参数有积极影响，“Regoplant”的影响更高，在种植前向根茎施用并在植被期间向生物量喷洒的联合处理效果最佳。当在 Hradcany 的贫瘠土壤中种植植物时，使用 PGR 不会改善生物量参数。同时，研究了以下金属的吸收过程的特点：铬（Cr）、锰（Mn）、镍（Ni）、铜（Cu）、锌（Zn）、锶（Sr）和铅（Pb）。监测元素的吸收行为根据土壤质量而有所不同。根据非生物元素的生物浓缩系数，Cr 和 Pb 在两种土壤中的植物根部占主导地位，而在任何植物组织中都未检测到 Ni。生物元素（Mn、Cu、Zn）及其类似物（Sr）的行为不同。这些元素在低营养沙质 Hradcany 土壤中更强烈地被吸收到地上组织中，而在肥沃的 Dolyna 土壤中主要被吸收到植物根部。在低营养土壤中生物元素的异常行为可能是由于胁迫的影响。然而，需要进行更多的研究，主要集中在土壤特性和养分供应上，以确认或反驳这一假设，并探讨应激的原因。这里总结的结果表明，土壤特性影响了 Mxg 的生物量参数，显著影响了金属的吸收行为，并且不能在贫瘠的军用土壤中普遍用于生产 Mxg 的 PGR。
