Recovering root system traits using image analysis exemplified by two-dimensional neutron radiography images of lupine.
نویسندگان
چکیده
Root system traits are important in view of current challenges such as sustainable crop production with reduced fertilizer input or in resource-limited environments. We present a novel approach for recovering root architectural parameters based on image-analysis techniques. It is based on a graph representation of the segmented and skeletonized image of the root system, where individual roots are tracked in a fully automated way. Using a dynamic root architecture model for deciding whether a specific path in the graph is likely to represent a root helps to distinguish root overlaps from branches and favors the analysis of root development over a sequence of images. After the root tracking step, global traits such as topological characteristics as well as root architectural parameters are computed. Analysis of neutron radiographic root system images of lupine (Lupinus albus) grown in mesocosms filled with sandy soil results in a set of root architectural parameters. They are used to simulate the dynamic development of the root system and to compute the corresponding root length densities in the mesocosm. The graph representation of the root system provides global information about connectivity inside the graph. The underlying root growth model helps to determine which path inside the graph is most likely for a given root. This facilitates the systematic investigation of root architectural traits, in particular with respect to the parameterization of dynamic root architecture models.
منابع مشابه
Recovering root system traits using image analysis Exemplified by 2-dimensional neutron radiography images of lupine
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Breakthrough Technologies Recovering Root System Traits Using Image Analysis Exemplified by Two-Dimensional Neutron Radiography Images of Lupine1[C][W][OPEN]
University of Vienna, Computational Science Center, A–1090 Vienna, Austria (D.L.); Swiss Federal Institute of Technology in Zurich, Institute of Terrestrial, Ecosystems, CH–8092 Zurich, Switzerland (B.F.); Paul Scherrer Institute, Spallation Neutron Source Division CH–5232 Willigen, Switzerland (P.V.); Forschungszentrum Jülich, Agrosphere, D–52425 Julich, Germany (A.S.); and University of Natur...
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ورودعنوان ژورنال:
- Plant physiology
دوره 164 1 شماره
صفحات -
تاریخ انتشار 2014