Ramana Sivakoti, Biswas Ashis Kumar, Singh Amar Bahadur, Ahirwar Narendar Kumar, Subba Rao Annangi
a Indian Institute of Soil Science, Nabi bagh , Bhopal , Madhya Pradesh , India.
Int J Phytoremediation. 2015;17(1-6):363-8. doi: 10.1080/15226514.2013.862203.
The potential of an ornamental shrub Crown of thorns (Euphorbia milli) was evaluated for remediation of soil contaminated with Cr. The plant is one of the rare succulent ornamental shrubs with a slow to moderate growth rate and is capable of blooming almost year-round. The plant could tolerate well up to 75 mg of applied Cr and beyond that there was mortality of plants. Though the plant could not be classified as a hyperaccumulator, the plant was still very efficient in translocating Cr from roots to shoots as evident from the data on uptake and translocation efficiency values. The translocation efficiency of over 80% in our study demonstrates that a large proportion of Cr has been translocated to the harvestable biomass of the plant and therefore, this plant could be effectively recommended for the remediation of soils contaminated with low to medium level of contamination i.e., up to 50 mg/kg soil.
对一种观赏灌木虎刺梅（大戟属）修复铬污染土壤的潜力进行了评估。该植物是罕见的多肉观赏灌木之一，生长速度缓慢至中等，几乎全年都能开花。该植物能很好地耐受高达75毫克的施加铬，超过这个量植物就会死亡。虽然该植物不能被归类为超富集植物，但从吸收和转运效率值的数据可以明显看出，它在将铬从根部转运到地上部分方面仍然非常高效。我们研究中超过80%的转运效率表明，大部分铬已被转运到植物可收获的生物量中，因此，这种植物可有效地推荐用于修复低至中等污染水平（即土壤中铬含量高达50毫克/千克） 的土壤。
