The effect of canopy architecture on the patterning of "windflecks" within a wheat canopy.

Autor: Burgess AJ; Division of Agriculture and Environmental Sciences, School of Biosciences, University of Nottingham Sutton Bonington Campus, Leicestershire, UK., Durand M; Organismal and Evolutionary Biology (OEB), Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre (ViPS), University of Helsinki, Helsinki, Finland., Gibbs JA; Computer Vision Lab, School of Computer Science, University of Nottingham Jubilee Campus, Nottingham, UK., Retkute R; Department of Plant Sciences, University of Cambridge, Cambridge, UK., Robson TM; Organismal and Evolutionary Biology (OEB), Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre (ViPS), University of Helsinki, Helsinki, Finland., Murchie EH; Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham Sutton Bonington Campus, Leicestershire, UK.
Jazyk: angličtina
Zdroj: Plant, cell & environment [Plant Cell Environ] 2021 Nov; Vol. 44 (11), pp. 3524-3537. Date of Electronic Publication: 2021 Aug 30.
DOI: 10.1111/pce.14168
Abstrakt: Under field conditions, plants are subject to wind-induced movement which creates fluctuations of light intensity and spectral quality reaching the leaves, defined here as windflecks. Within this study, irradiance within two contrasting wheat (Triticum aestivum) canopies during full sun conditions was measured using a spectroradiometer to determine the frequency, duration and magnitude of low- to high-light events plus the spectral composition during wind-induced movement. Similarly, a static canopy was modelled using three-dimensional reconstruction and ray tracing to determine fleck characteristics without the presence of wind. Corresponding architectural traits were measured manually and in silico including plant height, leaf area and angle plus biomechanical properties. Light intensity can differ up to 40% during a windfleck, with changes occurring on a sub-second scale compared to ~5 min in canopies not subject to wind. Features such as a shorter height, more erect leaf stature and having an open structure led to an increased frequency and reduced time interval of light flecks in the CMH79A canopy compared to Paragon. This finding illustrates the potential for architectural traits to be selected to improve the canopy light environment and provides the foundation to further explore the links between plant form and function in crop canopies.
(© 2021 The Authors. Plant, Cell & Environment published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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