Tracking photosynthetic injury of Paraquat-treated crop using chlorophyll fluorescence from hyperspectral data

Liu, Liangyun; Zhao, Jingjing; Guan, Lei

doi:10.5721/eujrs20134627

Cited by 18 publications

(10 citation statements)

References 45 publications

(60 reference statements)

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“…i.e. F 760 , as the values of the apparent fluorescence yield at 760 nm (SIF 760 /a) were within the range reported for different species (Meroni et al, 2009;Liu and Cheng, 2010;Liu et al, 2013). The apparent fluorescence yield at 760 nm showed the same global trend in the two studied species (A. sativa and S. italica).…”

Section: Sun Induced Fluorescence (Sif) Variation Between Species Andsupporting

confidence: 82%

Chlorophyll fluorescence, photochemical reflective index and normalized difference vegetative index during plant senescence

Cordon

Lagorio

Paruelo

2016

Journal of Plant Physiology

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The relationship between the Photochemical Reflectance Index (PRI), Normalized Difference Vegetation Index (NDVI) and chlorophyll fluorescence along senescence was investigated in this work. Reflectance and radiance measurements were performed at canopy level in grass species presenting different photosynthetic metabolism: Avena sativa (C3) and Setaria italica (C4), at different stages of the natural senescence process. Sun induced-chlorophyll fluorescence at 760nm (SIF) and the apparent fluorescence yield (SIF/a, with a=irradiance at time of measurement) were extracted from the radiance spectra of canopies using the Fraunhofer Line Discrimination-method. The photosynthetic parameters derived from Kautsky kinetics and pigment content were also calculated at leaf level. Whilst stand level NDVI patterns were related to changes in the structure of canopies and not in pigment content, stand level PRI patterns suggested changes both in terms of canopy and of pigment content in leaves. Both SIF/a and Φ decreased progressively along senescence in both species. A strong increment in NPQ was evident in A. sativa while in S. italica NPQ values were lower. Our most important finding was that two chlorophyll fluorescence signals, Φ and SIF/a, correlated with the canopy PRI values in the two grasses assessed, even when tissues at different ontogenic stages were present. Even though significant changes occurred in the Total Chlr/Car ratio along senescence in both studied species, significant correlations between PRI and chlorophyll fluorescence signals might indicate the usefulness of this reflectance index as a proxy of photosynthetic RUE, at least under the conditions of this study. The relationships between stand level PRI and the fluorescence estimators (Φ and SIF/a) were positive in both cases. Therefore, an increase in PRI values as in the fluorescence parameters would indicate higher RUE.

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Section: Sun Induced Fluorescence (Sif) Variation Between Species Andsupporting

confidence: 82%

Chlorophyll fluorescence, photochemical reflective index and normalized difference vegetative index during plant senescence

Cordon

Lagorio

Paruelo

2016

Journal of Plant Physiology

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“…Considering the specific dates of veraison and harvest stages first, the study results showed that the best wavelength-based indicator of LWP is in the red edge region for both OSB and CR data. Red edge, which is approximately between a minimum range of nm and a maximum range of nm is highly related with plant water stress) Jayaraman and Srivastava, 2002;Fitzgerald et al, 2006;Eitel et al, 2006;Blackburn, 2007;Govender et al, 2009;Liu et a., 2013). The results are in alignment with the previous studies that reported that the shape and position of red edge was found to be an indicator of chlorophyll content, biomass and hydric status of plants (Penuelas et al, 1993;Filella and Penuelas, 1994;Liu et al, 2013) and highly correlated with water stress of grapevines (Broge and Leblanc 2001;Rodríguez-Pérez et al, 2007).…”

Section: Discussionsupporting

confidence: 88%

Asma Su Stresinin Hiperspektral Analizi

Özelkan

Karaman

Candar³

et al. 2020

ÇOMÜ Ziraat Fakültesi Dergisi

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Viticulture is very sensitive to water stress, which is critical and influenced by all environmental factors, relating to the crop quality and productivity of vineyards. In this study, water stress was examined in veraison and harvest stages for nine different species with spectroradiometric measurements. Leaf water potential (LWP) values from field measurements and original spectra-based (OSB) and continuum removed spectra-based (CRSB) curves were analyzed with correlation and regression analysis to find the highest related wavelengths. The analysis was done for both specific dates of field measurements (i.e. 08.08.2012 and 06.09.2012) and also in aggregate i.e. all measured data. The specific date wavelength-based analysis revealed the "red edge region" as a major water stress indicator. The highest correlated wavelength was found to be 684 nm of CRSB curves with R=0.988. For the aggregate wavelength-based water stress analysis, the "violet and green regions" were identified as the best indicators. The highest correlated wavelength was found to be 410 nm of OSB curves with R=0.820. Furthermore, the Analysis of Variance (ANOVA) testing indicates that the results are significant at relatively high confidence levels. The spectral-based method performed in this study provides fast, flexible, and non-destructive water stress measurements of grapevines when compared to classical methods.

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“…the diurnal course of PRI was dependent on the exposition of the studied stands. The use of sun-induced chlorophyll fluorescence for probing the status of the photosynthetic system has been examined in several studies Rascher et al, 2009;Damm et al, 2010;Zarco-Tejada et al, 2012;Liu et al, 2013;Zarco-Tejada et al, 2013]. These studies found good but complex relations between photosynthesis rate and remotelysensed fluorescence.…”

Section: Introductionmentioning

confidence: 99%

Measuring Stress Reactions of Beech Seedlings with PRI, Fluorescence, Temperatures and Emissivity from VNIR and Thermal Field Imaging Spectroscopy

Buddenbaum

Rock

Hill

et al. 2015

European Journal of Remote Sensing

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Photosynthesis rate was measured during the course of a day on a pot of well-watered and a pot of drought-stressed young beech trees. At the same time, hyperspectral visible/near infrared and hyperspectral thermal images of the plants were recorded with a very high spatial resolution from a 3.8 m high platform. Time series of photochemical reflectance index (PRI), sun-induced fluorescence, temperature, and emissivity of the leaves were correlated with the photosynthesis measurements. PRI (R²=0.72 and 0.78 for well-watered and droughtstressed group, respectively), fluorescence (R²=0.72 and 0.40), and temperature (R²=0.62 and 0.69) proved to be good estimators for measured photosynthesis rates, emissivity had weaker correlations (R²=0.05 and 0.18). High resolution maps of photosynthetic activity could be produced from PRI, fluorescence, and temperature.

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Tracking photosynthetic injury of Paraquat-treated crop using chlorophyll fluorescence from hyperspectral data

Cited by 18 publications

References 45 publications

Chlorophyll fluorescence, photochemical reflective index and normalized difference vegetative index during plant senescence

Chlorophyll fluorescence, photochemical reflective index and normalized difference vegetative index during plant senescence

Asma Su Stresinin Hiperspektral Analizi

Measuring Stress Reactions of Beech Seedlings with PRI, Fluorescence, Temperatures and Emissivity from VNIR and Thermal Field Imaging Spectroscopy

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