Investigating the influence of geometrical traits on light interception efficiency of apple trees: A modelling study with MAppleT

Han, Liqi; Costes, Evelyne; Boudon, Frédéric; Cokelaer, Thomas; Pradal, Christophe; Silva, David Da; Faivre, Robert

doi:10.1109/pma.2012.6524827

Cited by 17 publications

(15 citation statements)

References 27 publications

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“…Studies have used virtual plant approaches, and the light environment in the greenhouse and light interception on cut rose can be simulated to predict the local (per leaf) light absorption and photosynthesis (Buck-Sorlin et al, 2011). Han et al (2012) and Da Silva et al (2014) combined the 3D apple modeling tool MAppleT and light interception model VPlants to investigate the influence of the architectural parameters of apple trees on the light interception efficiency. In addition, the light interception efficiency of young Cunninghamia lanceolata canopies was calculated for growth simulation .…”

Section: Introductionmentioning

confidence: 99%

Light interception efficiency analysis based on three-dimensional peach canopy models

Tang

Hou

Huang

et al. 2015

Ecological Informatics

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Light interception capability is a critical factor affecting the growth, development, fruit yield and quality of fruit trees; thus, it is beneficial to cultivate optimal canopy types with high light interception efficiency. In this study, we present a quantitative method of analyzing light interception by tree canopies based on a virtual plant model. A detailed three-dimensional (3D) peach model with a natural growth shape was reconstructed and then the branches in the model were pruned to generate canopies with an open center form. These models were used to calculate the light interception and corresponding net photosynthesis. A solar radiation transfer model was used to determine the radiation intensity at the top of the canopy, and a ray tracing algorithm and turtle algorithm were utilized to simulate the spatial distribution of direct and diffuse radiation, respectively, in the tree canopy and obtain the photosynthetically active radiation (PAR) for each leaf. In the final step, we applied the photosynthesis model to calculate the canopy net photosynthetic rate. To compare the light interception efficiency among various plant canopy shapes, the net production rate at the whole-canopy scale and the average net photosynthetic rate per unit leaf area were calculated. The simulation results showed that peach canopies with an open center form provided better results compared with canopies with a natural form in terms of light penetration and air ventilation. Our method supports quantitative analysis of light interception and use efficiency for different types of canopy architectures at each time step and for individual leaf units. The approach was implemented in the interactive parametric individual 3D tree modeling software ParaTree. The extended ParaTree software is useful for fruit tree management applications because it provides an intuitive tool that can assist in tree pruning and design for ideal canopy architecture types.

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Section: Introductionmentioning

confidence: 99%

Light interception efficiency analysis based on three-dimensional peach canopy models

Tang

Hou

Huang

et al. 2015

Ecological Informatics

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“…At the tree scale, light interception is affected by the intrinsic architectural pattern of a cultivar and Explanation: Tr -treatment: 1 -no root pruning and no AMF application, 2 -root pruning alone, 3 -root pruning and AMF application; each value represents the mean of 3 replicates; the different lower-case letters in the same column stand for significant differences at 0.05 level within a year horticultural practices, such as training and pruning [Han et al 2012, Da Silva et al 2013. Although severe shoot pruning was performed, weaken vigor of control plant gave preference to apical dominances outside shoot tips and resulted in more shoots appeared in the outer canopy that thus prevented light penetration inwards.…”

Section: Discussionmentioning

confidence: 99%

Rejuvenating Older Apple Trees by Root Pruning Combined With Arbuscular Mycorrhizal Fungi

Zhang

Liu

Zhang

et al. 2017

Acta Sci. Pol. Hortorum Cultus

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Older apple trees often demonstrate physiologically unreasonable shoot distribution due to root system aging, which results in lower fruit yield and poor fruit quality. Therefore this study was conducted to test whether root pruning combined with arbuscular mycorrhizal fungi could restore growth potential of fortyyear-old Red Fuji apple trees (Malus × domestica Borkh.) in a commercial orchard in 2013, by root pruning along both sides of rows, 80 cm from the trunk, to a depth of 30 cm and application of 100 ml arbuscular mycorrhizal inoculum per plant. Results showed that the percentage of root colonized by mycorrhizal fungi increased as root pruning was combined with arbuscular mycorrhizal fungi, however mycorrhizal colonization was not seen in the control roots and roots only by root pruning. For control tree total number of shoots decreased by 28.22% in 2015 than in 2013 and shoots mainly distributed in the outer canopy accounting for 58.10% of the total, which caused the lower light intensity inside the canopy, followed by lower fruit yield and poor fruit quality. Compared to control plant, shoot reduced by 33.96 and 38.51% in the outer canopy but increased by 97.99 and 123.69% in the inner canopy in 2015, as well as 390.20 and 478.43% in the vertical height of 1.5 to 2.5 m canopy, respectively treated by root pruning alone and combined with arbuscular mycorrhizal fungi. Root pruning alone and combined with arbuscular mycorrhizal fungi also raised the relative light intensity by 38.71 and 60.26% in the inner canopy in 2015, subsequent fruit yield by 315.79 and 373.68% respectively, in comparison to control plant. Shoot re-distribution improved fruit quality such as increase in firmness and soluble solid. Data indicated that the effect of root pruning combined with arbuscular mycorrhizal fungi on the rejuvenation of older apple trees was stronger than root pruning alone. It is therefore concluded that root pruning combined with arbuscular mycorrhizal fungi can think of as a measure to renew the older apple trees.

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“…The model was used in virtual experiments in which apple trees were simulated and coupled with μ SLIM, that is, MultiScale Light Interception Model, which estimates radiation attenuation from statistical description of foliage at different scales (Da Silva et al ). In silico experiments explored different combinations of geometrical and topological traits and their effects on light interception, considered as one of the key parameters to optimize fruit tree production (Han et al ; Da Silva et al ; Da Silva et al ).…”

Section: Methodsmentioning

confidence: 99%

Using numerical plant models and phenotypic correlation space to design achievable ideotypes

Picheny¹,

Casadebaig²,

Trépos³

et al. 2017

Plant Cell & Environment

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1Numerical plant models can predict the outcome of plant traits modifications resulting from genetic variations, on plant performance, by simulating physiological processes and their interaction with the environment. Optimization methods complement those models to design ideotypes, i.e. ideal values of a set of plant traits resulting in optimal adaptation for given combinations of environment and management, mainly through the maximization of a performance criteria (e.g. yield, light interception). As use of simulation models gains momentum in plant breeding, numerical experiments must be carefully engineered to provide accurate and attainable results, rooting them in biological reality. Here, we propose a multi-objective optimization formulation that includes a metric of performance, returned by the numerical model, and a metric of feasibility, accounting for correlations between traits based on field observations. We applied this approach to two contrasting models: a process-based crop model of sunflower and a functional-structural plant model of apple trees. In both cases, the method successfully characterized key plant traits and identified a continuum of optimal solutions, ranging from the most feasible to the most efficient. The present study thus provides successful proof of concept for this enhanced modeling approach, which identified paths for desirable trait modification, including direction and intensity.

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Investigating the influence of geometrical traits on light interception efficiency of apple trees: A modelling study with MAppleT

Cited by 17 publications

References 27 publications

Light interception efficiency analysis based on three-dimensional peach canopy models

Light interception efficiency analysis based on three-dimensional peach canopy models

Rejuvenating Older Apple Trees by Root Pruning Combined With Arbuscular Mycorrhizal Fungi

Using numerical plant models and phenotypic correlation space to design achievable ideotypes

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