Predicting photosynthetic capacity in tobacco using shortwave infrared spectral reflectance

© The Author(s) 2021. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissionsoup.com.

Bibliographische Detailangaben
Veröffentlicht in:Journal of experimental botany. - 1985. - 72(2021), 12 vom: 28. Mai, Seite 4373-4383
1. Verfasser: Sexton, Thomas (VerfasserIn)
Weitere Verfasser: Sankaran, Sindhuja, Cousins, Asaph B
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Journal of experimental botany
Schlagworte:Journal Article V cmax Chlorophyll hyperspectral reflectance nitrogen partial least squares regression photosynthetic capacity shortwave infrared 1406-65-1
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520 |a © The Author(s) 2021. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissionsoup.com. 
520 |a Plateauing yield and stressful environmental conditions necessitate selecting crops for superior physiological traits with untapped potential to enhance crop performance. Plant productivity is often limited by carbon fixation rates that could be improved by increasing maximum photosynthetic carboxylation capacity (Vcmax). However, Vcmax measurements using gas exchange and biochemical assays are slow and laborious, prohibiting selection in breeding programs. Rapid hyperspectral reflectance measurements show potential for predicting Vcmax using regression models. While several hyperspectral models have been developed, contributions from different spectral regions to predictions of Vcmax have not been clearly identified or linked to biochemical variation contributing to Vcmax. In this study, hyperspectral reflectance data from 350-2500 nm were used to build partial least squares regression models predicting in vivo and in vitro Vcmax. Wild-type and transgenic tobacco plants with antisense reductions in Rubisco content were used to alter Vcmax independent from chlorophyll, carbon, and nitrogen content. Different spectral regions were used to independently build partial least squares regression models and identify key regions linked to Vcmax and other leaf traits. The greatest Vcmax prediction accuracy used a portion of the shortwave infrared region from 2070 nm to 2470 nm, where the inclusion of fewer spectral regions resulted in more accurate models 
650 4 |a Journal Article 
650 4 |a V cmax 
650 4 |a Chlorophyll 
650 4 |a hyperspectral reflectance 
650 4 |a nitrogen 
650 4 |a partial least squares regression 
650 4 |a photosynthetic capacity 
650 4 |a shortwave infrared 
650 7 |a Chlorophyll  |2 NLM 
650 7 |a 1406-65-1  |2 NLM 
700 1 |a Sankaran, Sindhuja  |e verfasserin  |4 aut 
700 1 |a Cousins, Asaph B  |e verfasserin  |4 aut 
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