Prosiectau fesul blwyddyn
Crynodeb
Many plants can modify their leaf profile rapidly in response to environmental stress. Image-based data are increasingly used to retrieve reliable information on plant water status in a non-contact manner that has the potential to be scaled to high-throughput and repeated through time. This paper examined the variation of leaf angle as measured by both 3D images and goniometer in progressively drought stressed grapevine. Grapevines, grown in pots, were subjected to a 21-day period of drought stress receiving 100% (CTRL), 60% (IRR60%) and 30% (IRR30%) of maximum soil available water capacity. Leaf angle was (i) measured manually (goniometer) and (ii) computed by a 3D reconstruction method (multi-view stereo and structure from motion). Stomatal conductance, leaf water potential, fluorescence (Fv/Fm), leaf area and 2D RGB data were simultaneously collected during drought imposition. Throughout the experiment, values of leaf water potential ranged from −0.4 (CTRL) to −1.1 MPa (IRR30%) and it linearly influenced the leaf angle when measured manually (R2 = 0.86) and with 3D image (R2 = 0.73). Drought was negatively related to stomatal conductance and leaf area growth particularly in IRR30% while photosynthetic parameters (i.e., Fv/Fm) were not impaired by water restriction. A model for leaf area estimation based on the number of pixels of 2D RGB images developed at a different phenotyping robotized platform in a closely related experiment was successfully employed (R2 = 0.78). At the end of the experiment, top view 2D RGB images showed a ∼50% reduction of greener fraction (GGF) in CTRL and IRR60% vines compared to initial values, while GGF in IRR30% increased by approximately 20%.
Iaith wreiddiol | Saesneg |
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Rhif yr erthygl | 595 |
Nifer y tudalennau | 12 |
Cyfnodolyn | Frontiers in Plant Science |
Cyfrol | 11 |
Dynodwyr Gwrthrych Digidol (DOIs) | |
Statws | Cyhoeddwyd - 15 Mai 2020 |
Ôl bys
Gweld gwybodaeth am bynciau ymchwil 'Image-Based Assessment of Drought Response in Grapevines'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.Prosiectau
- 3 Wedi Gorffen
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A China-UK joint phenomics consortium to dissect the basis of crop stress resistance in the face of climate change
Doonan, J. (Prif Ymchwilydd), Han, J. (Cyd-ymchwilydd), Liu, Y. (Cyd-ymchwilydd) & Mur, L. (Cyd-ymchwilydd)
Biotechnology and Biological Sciences Research Council
01 Gorff 2018 → 31 Rhag 2023
Prosiect: Ymchwil a ariannwyd yn allanol
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European Plant Phenotyping Network 2020 : EPPN2020
Doonan, J. (Prif Ymchwilydd)
Horizon 2020 -European Commission
01 Mai 2017 → 31 Hyd 2021
Prosiect: Ymchwil a ariannwyd yn allanol