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@ARTICLE{Morandage:861707,
author = {Morandage, Tharaka Shehan and Schnepf, Andrea and Javaux,
Mathieu and Vereecken, Harry and Vanderborght, Jan},
title = {{P}arameter sensitivity analysis of a root system
architecture model based on virtual field sampling},
journal = {Plant and soil},
volume = {438},
number = {1-2},
issn = {0032-079X},
address = {Dordrecht [u.a.]},
publisher = {Springer Science + Business Media B.V},
reportid = {FZJ-2019-02137},
pages = {101-126},
year = {2019},
abstract = {AimsTraits of the plant root system architecture (RSA) play
a key role in crop performance. Therefore, architectural
root traits are becoming increasingly important in plant
phenotyping. In this study, we use a mathematical model to
investigate the sensitivity of characteristic root system
measures, obtained from different classical field root
sampling schemes, to RSA parameters.MethodsRoot systems of
wheat and maize were simulated and sampled virtually to
mimic real field experiments using the root system
architecture (RSA) model CRootBox. By means of a sensitivity
analysis, we found RSA parameters that significantly
influenced the virtual field sampling results. To identify
correlations between sensitivities, we carried out a
principal component analysis.ResultsWe found that the
parameters of zero order roots are the most sensitive, and
parameters of higher order roots are less sensitive.
Moreover, different characteristic root system measures
showed different sensitivity to RSA parameters. RSA
parameters that could be derived independently from
different types of field observations were
identified.ConclusionsSelection of characteristic root
system measures and parameters is essential to reduce the
problem of parameter equifinality in inverse modeling with
multi-parameter models and is an important step in the
characterization of root traits from field observations.},
cin = {IBG-3},
ddc = {580},
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:000468540800007},
doi = {10.1007/s11104-019-03993-3},
url = {https://juser.fz-juelich.de/record/861707},
}