Using multidirectional thermography to characterize water status of cotton

Luquet, Delphine; Bégué, Agnès; Vidal, Alain; Clouvel, Pascal; Dauzat, Jean; Olioso, Albert; Gu, Xiaojing; Tao, Yu

doi:10.1016/s0034-4257(02)00131-1

Cited by 41 publications

(27 citation statements)

References 20 publications

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“…The increase in LT was probably due to reduced evapotranspirational cooling, resulting from drought-induced stomatal closure. As stomata close in response to water deficit stress, transpirational cooling ceases, leading to a rise in leaf temperature (Luquet et al, 2003;Jones, 2004). While this physiological response to increasing water stress can help prevent development of lethal water deficits, it can also lead to lethal temperatures under warm sunny conditions.…”

Section: Screening For Drought Tolerance In Sugarcanementioning

confidence: 99%

Use of physiological parameters as fast tools to screen for drought tolerance in sugarcane

Silva¹,

Jifon

Silva

et al. 2007

Braz. J. Plant Physiol.

265

159

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Use of physiological parameters as fast tools to screen for drought tolerance in sugarcane: Drought is one of the major limitations to plant productivity worldwide. Identifying suitable screening tools and quantifiable traits would facilitate the crop improvement process for drought tolerance. In the present study, we evaluated the ability of four relatively physiological parameters (variable-to-maximum chlorophyll a fluorescence ratio, F v /F m ; estimated leaf chlorophyll content via SPAD index; leaf temperature, LT; and, leaf relative water content, RWC) to distinguish between drought tolerant and susceptible sugarcane genotypes subjected to a 90-d drought cycle. Eight field-grown genotypes were studied. By 45 d after the onset of treatments, the F v /F m , SPAD index and RWC of drought-stressed plants had declined significantly in all genotypes compared to values at the onset of well-watered treatments. However, the reductions were more severe in leaves of susceptible genotypes. Under drought stress, the tolerant genotypes as a group, maintained higher F v /F m (8%), SPAD index (15%), and RWC (16%) than susceptible genotypes. In general, LT of drought-stressed plants was higher (~4°C) than that of well-watered plants but the relative increase was greater among drought susceptible genotypes. Under drought stress, LT of tolerant genotypes was on average 2.2°C lower than that of susceptible genotypes. The results are consistent with the tolerantsusceptible classification of these genotypes and indicate that these tools can be reliable in screening for drought tolerance, with F v /F m , SPAD index and LT having the added advantage of being nondestructive and easily and quickly assessed. Key words: chlorophyll a fluorescence, relative water content, leaf temperature, Saccharum, water deficit Uso de parâmetros fisiológicos como ferramentas rápidas para selecionar tolerância à seca em cana-de-açúcar: A seca é uma das maiores limitações à produtividade das plantas em todo o mundo. Identificar ferramentas satisfatórias de seleção e características quantitativas facilitaria o processo de melhoramento de uma cultura para tolerância à seca. No presente estudo, foi avaliada a adequação de quatro parâmetros fisiológicos (razão entre fluorescências variável e máxima da clorofila a, F v /F m ; estimativa do conteúdo de clorofila na folha via o índice SPAD; temperatura da folha, TF; e conteúdo relativo de água na folha, CRA) para distinguir entre genótipos de cana-de-açúcar tolerantes e suscetíveis submetidos a um ciclo de 90 dias de déficit hídrico. Foram avaliados oito genótipos, cultivados sob condições de campo. Aos 45 dias após o estabelecimento dos tratamentos, F v /F m , índice SPAD e CRA das plantas sob estresse declinaram significativamente em todos os genótipos, comparados aos respectivos controles sob condições ideais de irrigação. Entretanto, as reduções foram mais severas nas folhas dos genótipos suscetíveis à seca. Sob estresse hídrico, o grupo dos genótipos tolerantes manteve maiores valores de F v /F m (8%), ...

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Section: Screening For Drought Tolerance In Sugarcanementioning

confidence: 99%

Use of physiological parameters as fast tools to screen for drought tolerance in sugarcane

Silva¹,

Jifon

Silva

et al. 2007

Braz. J. Plant Physiol.

265

159

View full text Add to dashboard Cite

show abstract

“…At the airborne level, the spectral dimension has been investigated with multispectral (TIMS, DAIS, MAS & MASTER) and hyperspectral (SEBASS [102]) sensors, and the directional dimension has been assessed with video cameras (see [103] with the ReSeDA program). At the ground level, the spectral dimension has been explored with hyperspectral sensors (FTIR BOMEM [104]), or with broadband radiometers [105][106][107], and the directional dimension has been examined with goniometric systems [58,108,109].…”

Section: Spectral and Directional Capabilitiesmentioning

confidence: 99%

“…It is used to estimate surface energy fluxes and water status from spatial variability indicators: the vegetation index / temperature triangle [41,[56][57][58]; or the albedo / temperature diagram [23,37,59,60]. It is also used for retrieving soil and vegetation temperatures from two source energy balance modeling [19,24].…”

Section: Introductionmentioning

confidence: 99%

“…They can significantly differ, according to various factors which drive the thermal regime: the water status, the solar exposure resulting from the canopy geometry and the illumination direction. These components are of interest for understanding canopy directional brightness and radiometric temperatures [58,[72][73][74]. -Canopy temperature profile, from the soil surface to the top of canopy, is the finest temperature one can consider.…”

Section: Introductionmentioning

confidence: 99%

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Modeling and Inversion in Thermal Infrared Remote Sensing over Vegetated Land Surfaces

Jacob¹,

Schmugge

Olioso

et al. 2008

Advances in Land Remote Sensing

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U n c o r r e c t e d P r o o f 244 F. Jacob et al.Abstract Thermal Infra Red (TIR) Remote sensing allow spatializing various land surface temperatures: ensemble brightness, radiometric and aerodynamic temperatures, soil and vegetation temperatures optionally sunlit and shaded, and canopy temperature profile. These are of interest for monitoring vegetated land surface processes: heat and mass exchanges, soil respiration and vegetation physiological activity. TIR remote sensors collect information according to spectral, directional, temporal and spatial dimensions. Inferring temperatures from measurements relies on developing and inverting modeling tools. Simple radiative transfer equations directly link measurements and variables of interest, and can be analytically inverted. Simulation models allow linking radiative regime to measurements. They require indirect inversions by minimizing differences between simulations and observations, or by calibrating simple equations and inductive learning methods. In both cases, inversion consists of solving an ill posed problem, with several parameters to be constrained from few information. Brightness and radiometric temperatures have been inferred by inverting simulation models and simple radiative transfer equations, designed for atmosphere and land surfaces. Obtained accuracies suggest refining the use of spectral and temporal information, rather than innovative approaches. Forthcoming challenge is recovering more elaborated temperatures. Soil and vegetation components can replace aerodynamic temperature, which retrieval seems almost impossible. They can be inferred using multiangular measurements, via simple radiative transfer equations previously parameterized from simulation models. Retrieving sunlit and shaded components or canopy temperature profile requires inverting simulation models. Then, additional difficulties are the influence of thermal regime, and the limitations of spaceborne observations which have to be along track due to the temperature fluctuations. Finally, forefront investigations focus on adequately using TIR information with various spatial resolutions and temporal samplings, to monitor the considered processes with adequate spatial and temporal scales. IntroductionUsing TIR remote sensing for environmental issues have been investigated the last three decades. This is motivated by the potential of the spatialized information for documenting the considered processes within and between the Earth system components: cryosphere [1-2], atmosphere [3][4][5][6], oceans [7][8][9], and land surfaces [10]. For the latter, TIR remote sensing is used to monitor forested areas [11][12][13][14], urban areas [15][16][17], and vegetated areas. We focus here on vegetated areas, natural and cultivated. The monitored processes are related to climatology, meteorology, hydrology and agronomy: (1) radiation, heat and water transfers at the soil-vegetation-atmosphere interface [18][19][20][21][22][23][24]; (2) interactions between land surface and atmospheric boundary la...

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“…As an important non-destructive approach, distinguished from the conventional method, thermography was a potential approach to detect plant water stress and has been exerted in many fields (Oerke et al, 2006;Jones and Leinonen, 2003;Chaerle and Van Der Straeten, 2000). The emergence of the thermography technique facilitated the estimation of plant canopy temperature and has also been used to estimate plant water content (Grant et al, 2006) and water stress (Nakahara and Inoue, 1997;Luquet et al, 2003) etc. There is potential to detect the response under the situations of extreme water stress such as leaf necrotic status, especially for pre-symptomatic checks (Chaerle et al 1999;Chaerle and Van Der Straeten, 2000) of branch dieback during the leafless status of trees.…”

Section: Introductionmentioning

confidence: 99%

Detecting leaf necrosis and branch dieback of transplantation-shocked kousa dogwood trees by thermography

Wang

Yamamoto

Ibaraki

et al. 2010

J. Agric. Meteorol.

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Leaf necrosis and branch dieback of the newly transplanted dogwood trees triggered by the prolonged dried period and sudden rise in temperature was observed in the study. Attached and detached leaves and branches were detected by a thermo infrared camera under the conditions including outdoor environment, indoor window sunlight and incandescent light. Different thermo imaging characteristics were found between necrotic part and living part of both leaves and branches. The detection of the outdoor attached leaves indicated higher temperatures at the necrotic part than living part, seemingly being attributable to the high water content and transpiration cooling effect in the living part. However, the detached leaves change their temperatures at necrotic part faster than that of living part largely due to the lower water content. Significantly amplified variation of imaging temperature between the live and dead parts of detached leaves and branches during the heating and cooling process indicated that there was potential to detect the leaf necrosis and branch dieback by viewing the temperature fluctuation of Kousa dogwood (Cornus kousa) trees with thermography.

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Using multidirectional thermography to characterize water status of cotton

Cited by 41 publications

References 20 publications

Use of physiological parameters as fast tools to screen for drought tolerance in sugarcane

Use of physiological parameters as fast tools to screen for drought tolerance in sugarcane

Modeling and Inversion in Thermal Infrared Remote Sensing over Vegetated Land Surfaces

Detecting leaf necrosis and branch dieback of transplantation-shocked kousa dogwood trees by thermography

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