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Reflectance-Based Vegetation Index Assessment of Four Plant Species Exposed to Lithium Chloride.


ABSTRACT: This study considers whether a relationship exists between response to lithium (Li) exposure and select vegetation indices (VI) determined from reflectance spectra in each of four plant species: Arabidopsis thaliana, Helianthus annuus (sunflower), Brassica napus (rape), and Zea mays (corn). Reflectance spectra were collected every week for three weeks using an ASD FieldSpec Pro spectroradiometer with both a contact probe (CP) and a field of view probe (FOV) for plants treated twice weekly in a laboratory setting with 0 mM (control) or 15 mM of lithium chloride (LiCl) solution. Plants were harvested each week after spectra collection for determination of relevant physical endpoints such as relative water content and chlorophyll content. Mixed effects analyses were conducted on selected endpoints and vegetation indices (VI) to determine the significance of the effects of treatment level and length of treatment as well as to determine which VI would be appropriate predictors of treatment-dependent endpoints. Of the species considered, A. thaliana exhibited the most significant effects and corresponding shifts in reflectance spectra. Depending on the species and endpoint, the most relevant VIs in this study were NDVI, PSND, YI, R1676/R1933, R750/R550, and R950/R750.

SUBMITTER: Martinez NE 

PROVIDER: S-EPMC6163704 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

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Reflectance-Based Vegetation Index Assessment of Four Plant Species Exposed to Lithium Chloride.

Martinez Nicole E NE   Sharp Julia L JL   Johnson Thomas E TE   Kuhne Wendy W WW   Stafford Clay T CT   Duff Martine C MC  

Sensors (Basel, Switzerland) 20180821 9


This study considers whether a relationship exists between response to lithium (Li) exposure and select vegetation indices (VI) determined from reflectance spectra in each of four plant species: <i>Arabidopsis thaliana</i>, <i>Helianthus annuus</i> (sunflower), <i>Brassica napus</i> (rape), and <i>Zea mays</i> (corn). Reflectance spectra were collected every week for three weeks using an ASD FieldSpec Pro spectroradiometer with both a contact probe (CP) and a field of view probe (FOV) for plants  ...[more]

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