期刊
PLANT AND SOIL
卷 332, 期 1-2, 页码 177-192出版社
SPRINGER
DOI: 10.1007/s11104-010-0284-7
关键词
Root system development; Phosphate uptake; Tropism; L-System; Mathematical modelling; Sink term
资金
- Vienna Science and Technology Fund (WWTF) [MA07-008]
- Austrian Science Fund (FWF) [T341-N13]
Understanding the impact of roots and rhizosphere traits on plant resource efficiency is important, in particular in the light of upcoming shortages of mineral fertilizers and climate change with increasing frequency of droughts. We developed a modular approach to root growth and architecture modelling with a special focus on soil root interactions. The dynamic three-dimensional model is based on L-Systems, rewriting systems well-known in plant architecture modelling. We implemented the model in Matlab in a way that simplifies introducing new features as required. Different kinds of tropisms were implemented as stochastic processes that determine the position of the different roots in space. A simulation study was presented for phosphate uptake by a maize root system in a pot experiment. Different sink terms were derived from the root architecture, and the effects of gravitropism and chemotropism were demonstrated. This root system model is an open and flexible tool which can easily be coupled to different kinds of soil models.
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