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@ARTICLE{Landl:845904,
author = {Landl, Magdalena and Schnepf, Andrea and Vanderborght, Jan
and Bengough, A. Glyn and Bauke, Sara L. and Lobet,
Guillaume and Bol, Roland and Vereecken, Harry},
title = {{M}easuring root system traits of wheat in 2{D} images to
parameterize 3{D} root architecture models},
journal = {Plant and soil},
volume = {425},
number = {1-2},
issn = {1573-5036},
address = {Dordrecht [u.a.]},
publisher = {Springer Science + Business Media B.V},
reportid = {FZJ-2018-03102},
pages = {457 - 477},
year = {2018},
abstract = {Background and aimsThe main difficulty in the use of 3D
root architecture models is correct parameterization. We
evaluated distributions of the root traits inter-branch
distance, branching angle and axial root trajectories from
contrasting experimental systems to improve model
parameterization.MethodsWe analyzed 2D root images of
different wheat varieties (Triticum aestivum) from three
different sources using automatic root tracking. Model input
parameters and common parameter patterns were identified
from extracted root system coordinates. Simulation studies
were used to (1) link observed axial root trajectories with
model input parameters (2) evaluate errors due to the 2D
(versus 3D) nature of image sources and (3) investigate the
effect of model parameter distributions on root foraging
performance.ResultsDistributions of inter-branch distances
were approximated with lognormal functions. Branching angles
showed mean values <90°. Gravitropism and tortuosity
parameters were quantified in relation to downwards
reorientation and segment angles of root axes. Root system
projection in 2D increased the variance of branching angles.
Root foraging performance was very sensitive to parameter
distribution and variance.Conclusions2D image analysis can
systematically and efficiently analyze root system
architectures and parameterize 3D root architecture models.
Effects of root system projection (2D from 3D) and
deflection (at rhizotron face) on size and distribution of
particular parameters are potentially significant.},
cin = {IBG-3},
ddc = {570},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000430992300033},
doi = {10.1007/s11104-018-3595-8},
url = {https://juser.fz-juelich.de/record/845904},
}