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An Ex Situ Salinity Restoration Assessment Using Legume, Saltbush, and Grass in Australian Soil
Author(s) -
Bhuiyan Mohammad S. I.,
Raman Anantanarayanan,
Hodgkins Dennis,
Mitchell David,
Nicol Helen
Publication year - 2016
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201500214
Subject(s) - salinity , shoot , phytoremediation , bioconcentration , fabaceae , soil salinity , legume , agronomy , horticulture , melilotus , environmental remediation , bioaccumulation , botany , chemistry , biology , soil water , environmental chemistry , ecology , contamination
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.