Spectral and thermal response of Heliconia psittacorum species to induced water stress

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dc.creatorDavid Revelo-Luna
dc.creatorAldemar Reyes-Trujillo
dc.creatorMiguel Peña-Varón
dc.date2018
dc.date.accessioned2026-07-07T02:44:25Z
dc.descriptionAn important limitation in agricultural production is stress resulting from water deficit. Flower production and post-harvest life both decrease in Heliconia psittacorum affected by water stress. Remote sensing provides tools for estimating the water status of plant species using spectral information in the visible and infrared range. This paper presents a study of reflectance in the 350-800 nm range and the response in the thermal infrared of leaf tissue under different irrigation regimes. For the measurement of reflectance, an OceanOptics® Micro-Spectrometer was used, while for the thermal infrared measurements, a FLIRE40® camera was used. Three irrigation regimes were established: T1: 100% field capacity (FC), T2: 50% FC, and T3: 10% FC. Significant differences were found between treatment T1 and treatments T2-T3 in the water stress index (CWSI) and stomatal conductance index (GI). The reflectance around 800 nm decreased for T2 and T3. Significant differences were obtained between T1 and T2-T3 in the maximum of the first derivative of the reflectance between 700 and 750 nm. It was found that, in the range 350-800 nm, the thermal indices were better indicators of the water status of the Heliconia species than the spectral indices.
dc.formatapplication/pdf
dc.identifier0120-9965
dc.identifierhttps://www.redalyc.org/articulo.oa?id=180360218007
dc.identifierhttps://www.redalyc.org/journal/1803/180360218007/
dc.identifierhttps://www.redalyc.org/journal/1803/180360218007/html/
dc.identifierhttps://www.redalyc.org/journal/1803/180360218007/180360218007.epub
dc.identifierhttps://www.redalyc.org/journal/1803/180360218007/movil
dc.identifier10.15446/agron.colomb.v36n3.70379
dc.identifier.urihttp://hdl.handle.net/123456789/422373
dc.languageen
dc.publisherUniversidad Nacional de Colombia
dc.relationhttp://www.redalyc.org/revista.oa?id=1803
dc.rightsAgronomía Colombiana
dc.sourceAgronomía Colombiana (Colombia) Num.3 Vol.36
dc.subjectAgrociencias
dc.titleSpectral and thermal response of Heliconia psittacorum species to induced water stress
dc.typeartículo científico

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Agronomía Colombiana - Universidad Nacional de Colombia