Thermal imaging reliability for estimating grain yield and carbon isotope discrimination in wheat genotypes : importance of the environmental conditions

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dc.contributor.authorRomero-Bravo, Sebastianen_ZA
dc.contributor.authorMendez-Espinoza, Ana Mariaen_ZA
dc.contributor.authorGarriga, Miguelen_ZA
dc.contributor.authorEstrada, Felixen_ZA
dc.contributor.authorEscobar, Alejandroen_ZA
dc.contributor.authorGonzalez-Martinez, Luisen_ZA
dc.contributor.authorPoblete-Echeverria, Carlosen_ZA
dc.contributor.authorSepulveda, Danielen_ZA
dc.contributor.authorMatus, Ivanen_ZA
dc.contributor.authorCastillo, Dalmaen_ZA
dc.contributor.authordel Pozo, Alejandroen_ZA
dc.contributor.authorLobos, Gustavo A.en_ZA
dc.date.accessioned2021-11-09T14:07:46Z
dc.date.available2021-11-09T14:07:46Z
dc.date.issued2019-06-13
dc.descriptionCITATION: Romero-Bravo, S. et al. 2019. Thermal Imaging Reliability for Estimating Grain Yield and Carbon Isotope Discrimination in Wheat Genotypes: Importance of the Environmental Conditions. Sensors, 19(12). doi:10.3390/s19122676
dc.descriptionThe original publication is available at https://www.mdpi.com/journal/sensors
dc.description.abstractCanopy temperature (Tc) by thermal imaging is a useful tool to study plant water status and estimate other crop traits. This work seeks to estimate grain yield (GY) and carbon discrimination (Δ13C) from stress degree day (SDD = Tc − air temperature, Ta), considering the effect of a number of environmental variables such as the averages of the maximum vapor pressure deficit (VPDmax) and the ambient temperature (Tmax), and the soil water content (SWC). For this, a set of 384 and a subset of 16 genotypes of spring bread wheat were evaluated in two Mediterranean-climate sites under water stress (WS) and full irrigation (FI) conditions, in 2011 and 2012, and 2014 and 2015, respectively. The relationship between the GY of the 384 wheat genotypes and SDD was negative and highly significant in 2011 (r2 = 0.52 to 0.68), but not significant in 2012 (r2 = 0.03 to 0.12). Under WS, the average GY, Δ13C, and SDD of wheat genotypes growing in ten environments were more associated with changes in VPDmax and Tmax than with the SWC. Therefore, the amount of water available to the plant is not enough information to assume that a particular genotype is experiencing a stress condition.en_ZA
dc.description.urihttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6630921/
dc.description.versionPublisher’s version
dc.format.extent16 pages
dc.identifier.citationRomero-Bravo, S. et al. 2019. Thermal Imaging Reliability for Estimating Grain Yield and Carbon Isotope Discrimination in Wheat Genotypes: Importance of the Environmental Conditions. Sensors, 19(12). doi:10.3390/s19122676
dc.identifier.issn1424-8220 (online)
dc.identifier.otherdoi:10.3390/s19122676
dc.identifier.urihttp://hdl.handle.net/10019.1/123412
dc.language.isoen_ZAen_ZA
dc.publisherMDPI
dc.rights.holderAuthors retain copyright
dc.subjectRemote sensingen_ZA
dc.subjectPhenotype -- Effect of global warming onen_ZA
dc.subjectWheat (Triticum eastivum L.) -- Grain yielden_ZA
dc.subjectWheat (Triticum eastivum L.) -- Water requirementsen_ZA
dc.subjectTriticum eastivum -- Effect of stress onen_ZA
dc.subjectWheat -- Effect of temperature onen_ZA
dc.subjectWheat -- Geneticsen_ZA
dc.titleThermal imaging reliability for estimating grain yield and carbon isotope discrimination in wheat genotypes : importance of the environmental conditionsen_ZA
dc.typeArticleen_ZA
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