1. Spectral changes in the leaves of barley plant due to phytoremediation of metals - results from a pot study.
- Author
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Rathod, Paresh H., Brackhage, Carsten, Van der Meer, Freek D., Müller, Ingo, Noomen, Marleen F., Rossiter, David G., and Dudel, Gert E.
- Subjects
BARLEY ,PHYTOREMEDIATION ,SPECTRAL reflectance - Abstract
This research studied the changes in leaf reflectance spectra (350-2500 nm) due to metal phytoextraction into barley plants grown in metal-spiked soils (3 levels of Cd, Pb, As and their metal-mixture treatments). Growth of barley was adversely affected due to 100 mg As kg
-1 and metal-mixture (10 Cd+150 Pb+100 As; mg kg-1 ) treatments. Metal phytoextraction were in order of: root >straw ≥leaves >grains. Results of reflectance spectra of leaves show the influence of As-treatment only, causing spectral changes in visible and infrared domains mostly, as apparent from the significant correlation between leaf-As and leaf-spectra. Chlorophyll and water stress indices and band depths analyses showed significant correlations to leaf-As, and can be used to distinguish metal-stressed plants. Finally, regression models demonstrate the potential use of hyperspectral reflectance data to monitor plant health during phytoremediation process and to estimate leaf-As in barley, particularly in this study. [ABSTRACT FROM AUTHOR]- Published
- 2015
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