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FSPM-based investigation of plant interactions in complex wheat canopies

Functional–structural plant models (FSPMs) explicitly describe individual plant architecture, making this approach suitable for unravelling plant–plant interactions in complex canopies. Barillot et al. developed a comprehensive FSPM accounting for the interactions between plant architecture, light, soil nitrogen and the metabolism of carbon and nitrogen.

Models of plants

The model is evaluated by simulating the functioning of post-anthesis wheat canopies (Triticum aestivum) of contrasting leaf inclination, arranged in pure and mixed stands. As an emergent property of the detailed metabolism, the model predicts single relationships between absorbed light, carbon assimilation and grain mass. Over the post-anthesis period, planophile plants absorb more light than erectophile plants, resulting in a slightly higher grain mass. By providing access to critical variables such as resource acquisition, internal metabolic concentrations, leaf life span and grain filling, the behaviour of complex canopies could be modelled.

Alex Assiry

Alex Assiry is an editorial assistant in the Annals of Botany Office. When not working, Alex listens for the opportunity to help.

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