Gaëtan Louarn, Jérémie Lecoeur and Eric Lebon (INRA)


Model category SPM
Plant part Shoot
Scale Organs, Whole_plant, Field
Licence open_source
Operating system MacOs, Windows, Linux
Programming language Python
Format of model inputs and outputs Text files and MTG files
Species studied Grapevine
Execution environment Console
Modelling environment OpenAlea

Scientific article

A Three-dimensional Statistical Reconstruction Model of Grapevine (Vitis vinifera) Simulating Canopy Structure Variability within and between Cultivar/Training System Pairs
Gaëtan Louarn,Jérémie Lecoeur and Eruc Lebon
Annals of Botany, 2008 View paper

Model description

This model is original in combining a turbid-medium-like envelope enclosing the volume occupied by vine shoots with the use of discrete geometric polygons representing leaves randomly located within this volume to represent plant structure. Reconstruction rules are adapted to capture the main determinants of grapevine shoot architecture and their variability. Using a simplified set of parameters, it is possible to describe (1) the 3D path of the main shoot, (2) the volume occupied by the foliage around this path and (3) the orientation of individual leaf surfaces. Moreover, the light interception efficiency and local variations of light transmittance within and between experimental plots can be correctly simulated.

Some case studies

Some recent studies using Topvine:

- Garin G, Fournier C, Andrieu B, et al (2014) A modelling framework to simulate foliar fungal epidemics using functional–structural plant models. Annals of Botany 114:795–812. doi: 10.1093/aob/mcu101

- Louarn G, Dauzat J, Lecoeur J, Lebon E (2008) Influence of trellis system and shoot positioning on light interception and distribution in two grapevine cultivars with different architectures: an original approach based on 3D canopy modelling. Australian Journal of Grape and Wine Research. doi: 10.1111/j.1755-0238.2008.00016.x

- Prieto JA, Louarn G, Perez Peña J, et al (2012) A leaf gas exchange model that accounts for intra-canopy variability by considering leaf nitrogen content and local acclimation to radiation in grapevine (Vitis vinifera L.): Modelling intra-canopy variability on gas exchange. Plant, Cell & Environment 35:1313–1328. doi: 10.1111/j.1365-3040.2012.02491.x