MAppleT: simulation of apple tree development using mixed stochastic and biomechanical models

Functional Plant Biology : FPB
Evelyne CostesChristophe Godin

Abstract

Construction of tree architectural databases over years is time consuming and cannot easily capture event dynamics, especially when both tree topology and geometry are considered. The present project aimed to bring together models of topology and geometry in a single simulation such that the architecture of an apple tree may emerge from process interactions. This integration was performed using L-systems. A mixed approach was developed based on stochastic models to simulate plant topology and mechanistic model for the geometry. The succession of growth units (GUs) along axes and their branching structure were jointly modelled by a hierarchical hidden Markov model. A biomechanical model, derived from previous studies, was used to calculate stem form at the metamer scale, taking into account the intra-year dynamics of primary, secondary and fruit growth. Outputs consist of 3-D mock-ups - geometric models representing the progression of tree form over time. To asses these models, a sensitivity analysis was performed and descriptors were compared between simulated and digitised trees, including the total number of GUs in the entire tree, descriptors of shoot geometry (basal diameter, length), and descriptors of axis geometry (incli...Continue Reading

References

May 29, 1998·Journal of Theoretical Biology·C Godin, Y Caraglio
Jun 1, 1997·Plant, Cell & Environment·R P Hangarter
Oct 13, 2001·Journal of Theoretical Biology·Y GuédonE Costes
Jul 9, 2002·Annals of Botany·E Costes, Y Guédon
Mar 3, 2006·Tree Physiology·Gaby DeckmynTim J Randle
Jun 5, 2007·Genome Génome / Conseil National De Recherches Canada·V SeguraE Costes

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Citations

Dec 27, 2016·SpringerPlus·Fabio Takeshi MatsunagaMiroslava Rakocevic
May 12, 2020·Annals of Botany·Frédéric BoudonFrédéric Normand
Jul 5, 2011·Annals of Botany·Mikolaj CieslakJim Hanan
Mar 22, 2014·Annals of Botany·Michael Renton, Pieter Poot
Jun 20, 2017·Plant, Cell & Environment·Victor PichenyEvelyne Costes
Sep 21, 2021·Tree Physiology·Francesca GrisafiSergio Tombesi

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