Thermal Imaging Reliability for Estimating Grain Yield and Carbon Isotope Discrimination in Wheat Genotypes: Importance of the Environmental Conditions
Canopy 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 (Δ<sup>13</sup>C) from stress degree day (SDD = Tc − air temperature, Ta), con...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-06-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/19/12/2676 |
| _version_ | 1811306557981327360 |
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| author | Sebastián Romero-Bravo Ana María Méndez-Espinoza Miguel Garriga Félix Estrada Alejandro Escobar Luis González-Martinez Carlos Poblete-Echeverría Daniel Sepulveda Ivan Matus Dalma Castillo Alejandro del Pozo Gustavo A. Lobos |
| author_facet | Sebastián Romero-Bravo Ana María Méndez-Espinoza Miguel Garriga Félix Estrada Alejandro Escobar Luis González-Martinez Carlos Poblete-Echeverría Daniel Sepulveda Ivan Matus Dalma Castillo Alejandro del Pozo Gustavo A. Lobos |
| author_sort | Sebastián Romero-Bravo |
| collection | DOAJ |
| description | Canopy 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 (Δ<sup>13</sup>C) 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 (r<sup>2</sup> = 0.52 to 0.68), but not significant in 2012 (r<sup>2</sup> = 0.03 to 0.12). Under WS, the average GY, Δ<sup>13</sup>C, 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. |
| first_indexed | 2024-04-13T08:46:21Z |
| format | Article |
| id | doaj.art-38fff7e9dbce4389a13499036f9b033a |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T08:46:21Z |
| publishDate | 2019-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-38fff7e9dbce4389a13499036f9b033a2022-12-22T02:53:38ZengMDPI AGSensors1424-82202019-06-011912267610.3390/s19122676s19122676Thermal Imaging Reliability for Estimating Grain Yield and Carbon Isotope Discrimination in Wheat Genotypes: Importance of the Environmental ConditionsSebastián Romero-Bravo0Ana María Méndez-Espinoza1Miguel Garriga2Félix Estrada3Alejandro Escobar4Luis González-Martinez5Carlos Poblete-Echeverría6Daniel Sepulveda7Ivan Matus8Dalma Castillo9Alejandro del Pozo10Gustavo A. Lobos11Department of Agricultural Sciences, Universidad Católica del Maule, Curicó P.O. Box 684, ChilePlant Breeding and Phenomic Center, Faculty of Agricultural Sciences, Universidad de Talca, Talca P.O. Box 747, ChilePlant Breeding and Phenomic Center, Faculty of Agricultural Sciences, Universidad de Talca, Talca P.O. Box 747, ChilePlant Breeding and Phenomic Center, Faculty of Agricultural Sciences, Universidad de Talca, Talca P.O. Box 747, ChilePlant Breeding and Phenomic Center, Faculty of Agricultural Sciences, Universidad de Talca, Talca P.O. Box 747, ChilePlant Breeding and Phenomic Center, Faculty of Agricultural Sciences, Universidad de Talca, Talca P.O. Box 747, ChileDepartment of Viticulture and Oenology, Stellenbosch University, Matieland 7602, South AfricaCentro de Investigación y Transferencia en Riego y Agroclimatología (CITRA), Talca P.O. Box 747, ChileCentro Regional Investigación Quilamapu, Instituto de Investigaciones Agropecuarias, Chillán P.O. Box 426, ChileCentro Regional Investigación Quilamapu, Instituto de Investigaciones Agropecuarias, Chillán P.O. Box 426, ChilePlant Breeding and Phenomic Center, Faculty of Agricultural Sciences, Universidad de Talca, Talca P.O. Box 747, ChilePlant Breeding and Phenomic Center, Faculty of Agricultural Sciences, Universidad de Talca, Talca P.O. Box 747, ChileCanopy 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 (Δ<sup>13</sup>C) 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 (r<sup>2</sup> = 0.52 to 0.68), but not significant in 2012 (r<sup>2</sup> = 0.03 to 0.12). Under WS, the average GY, Δ<sup>13</sup>C, 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.https://www.mdpi.com/1424-8220/19/12/2676remote sensingphenotypephenotypingphenomics<i>Triticum aestivum</i>water deficitstressinfrared |
| spellingShingle | Sebastián Romero-Bravo Ana María Méndez-Espinoza Miguel Garriga Félix Estrada Alejandro Escobar Luis González-Martinez Carlos Poblete-Echeverría Daniel Sepulveda Ivan Matus Dalma Castillo Alejandro del Pozo Gustavo A. Lobos Thermal Imaging Reliability for Estimating Grain Yield and Carbon Isotope Discrimination in Wheat Genotypes: Importance of the Environmental Conditions Sensors remote sensing phenotype phenotyping phenomics <i>Triticum aestivum</i> water deficit stress infrared |
| title | Thermal Imaging Reliability for Estimating Grain Yield and Carbon Isotope Discrimination in Wheat Genotypes: Importance of the Environmental Conditions |
| title_full | Thermal Imaging Reliability for Estimating Grain Yield and Carbon Isotope Discrimination in Wheat Genotypes: Importance of the Environmental Conditions |
| title_fullStr | Thermal Imaging Reliability for Estimating Grain Yield and Carbon Isotope Discrimination in Wheat Genotypes: Importance of the Environmental Conditions |
| title_full_unstemmed | Thermal Imaging Reliability for Estimating Grain Yield and Carbon Isotope Discrimination in Wheat Genotypes: Importance of the Environmental Conditions |
| title_short | Thermal Imaging Reliability for Estimating Grain Yield and Carbon Isotope Discrimination in Wheat Genotypes: Importance of the Environmental Conditions |
| title_sort | thermal imaging reliability for estimating grain yield and carbon isotope discrimination in wheat genotypes importance of the environmental conditions |
| topic | remote sensing phenotype phenotyping phenomics <i>Triticum aestivum</i> water deficit stress infrared |
| url | https://www.mdpi.com/1424-8220/19/12/2676 |
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