An Ex Situ Salinity Restoration Assessment Using Legume, Saltbush, and Grass in Australian Soil

作者：Bhuiyan Mohammad S I; Raman Anantanarayanan^*; Hodgkins Dennis; Mitchell David; Nicol Helen

来源：Clean-Soil Air Water, 2016, 44(7): 840-848.

DOI：10.1002/clen.201500214

• Bioaccumulation
• Phytoextraction
• Phytostabilization
• Salt tolerating plants
• Translocation

Shoot and root water content, shoot/root biomass ratio, and plant height were measured in Melilotus siculus (Fabaceae), Tecticornia pergranulata (Amaranthaceae: Chenopodiodeae), and Thinopyrum ponticum (Poaceae) to determine their growth performance in a glasshouse - pot trial using salinity levels of 0.0, 2.5, and 5.0 dS m(-1). The following indices, total-ion accumulation (TIA), bioaccumulation factor (BF), translocation factor (TF), and bioconcentration factor (BCF) of Na+ and Cl- were also measured enabling the evaluation of the remediation capacity of these plants. With increasing salinity in soil, total Na+ and Cl- accumulation increased in the tested plants in the following order: T. pergranulata > M. siculus > T. ponticum. T. pergranulata had the maximal phytoextraction capacity of Na+ and Cl-. The BF and BCF values of Na+ and Cl- were > 1 in the plants tested in different salinity treatments. The TF value of Cl- was > 1 for these tested plants, whereas the TF value of Na+ was > 1 in T. pergranulata and M. siculus and it <1 in T. ponticum. T. pergranulata and M. siculus performed the best, accumulating more of Na+ and Cl-, and therefore they appear to be the candidates-of-choice for phytoremediation of saline sites in central western New South Wales, Australia.

• 出版日期2016-7