Abstract

The purpose of this study was to inspect the suitability of sweet basil (Ocimum basilicum L.) for phytoremediation of heavy metal contaminated areas in urban areas of Egypt through study the impact of the most common pollutants in Egypt: cadmium (Cd) and lead (Pb) on morphological traits, and essential oil (EOs) content of sweet basil. The experiment was done under greenhouse conditions. The applied treatments tested in this experiment for Cd concentrations were 5, 10, 15, 20, 25 ppm and for Pb: 100, 350, 750, 1,000, 1,500 ppm. The composition and amount of EOs had been determined using gas chromatography-mass spectrometry (GC-MS). The results indicated that the contaminated soil had a negative impact on morphological traits development of basil (e.g., the decline in fresh and dry weight). The increase in Cd and Pb concentrations enhanced the EOs yield of sweet basil. In general, basil cultivation in the Cd and Pb contaminated soils could cause undesirable impacts on morphological traits; however, the presence of these metals has a major influence on the EOs yield, composition, and phytoremediation of the soil.

摘要

这项研究的目的是通过研究埃及最常见的污染物：镉（Cd）和铅（）对甜罗勒（Ocimum basilicum L.）对埃及市区重金属污染区进行植物修复的适用性进行检查。 Pb）对甜罗勒的形态特征和精油（EOs）含量的影响。该实验在温室条件下进行。在本实验中测试的Cd浓度为5、10、15、20、25 ppm，Pb为100、350、750、1,000、1,500 ppm。EO的组成和数量已使用气相色谱-质谱（GC-MS）确定。结果表明，受污染的土壤对罗勒的形态性状发育有负面影响（如，鲜重和干重下降）。Cd和Pb浓度的增加提高了甜罗勒的EOs产量。通常，在Cd和Pb污染的土壤中种植罗勒可能会对形态性状产生不良影响。但是，这些金属的存在对土壤的EOs产量，组成和植物修复具有重大影响。