Characterization of the interactions between architecture and source–sink relationships in winter oilseed rape (Brassica napus) using the GreenLab model

Jullien, Alexandra; Mathieu, Amélie; Allirand, Jean-Michel; Pinet, A; Reffye, Philippe de; Cournède, Paul-Henry; Ney, Bertrand

doi:10.1093/aob/mcq205

Cited by 52 publications

(28 citation statements)

References 33 publications

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“…Current studies are performed on winter oilseed rape, which also exhibits two linear phases of leaf development with an abrupt change in the rhythm of leaf appearance at some stage, but, contrary to the sugar beet, it corresponds to an acceleration (Jullien et al, 2011 …”

Section: Discussionmentioning

confidence: 99%

Modelling the interindividual variability of organogenesis in sugar beet populations using a hierarchical segmented model

Baey¹,

Didier²,

Lemaire³

et al. 2013

Ecological Modelling

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Cournède. Modelling the interindividual variability of organogenesis in sugar beet populations using a hierarchical segmented model. Ecological Modelling, Elsevier, 2013, 263, pp.56-63. 10.1016/j.ecolmodel.2013 Modelling the interindividual variability of organogenesis in sugar beet populations using a hierarchical segmented model AbstractModelling the interindividual variability in plant populations is a key issue to enhance the predictive capacity of plant growth models at the eld scale. In the case of sugar beet, this variability is well illustrated by rate of leaf appearance, or by its inverse the phyllochron. Indeed, if the mean phyllochron remains stable among seasons, there is a strong variability between individuals, which is not taken into account when using models based only on mean population values.In this paper, we proposed a nonlinear mixed model to assess the variability of the dynamics of leaf appearance in sugar beet crops. the four parameters were signicant. Also, the rupture thermal time was found to be non signicantly correlated to the other three parameters. We compared our piecewise-linear formulation with other formulations such as sigmoïd orGompertz models, but they provided higher AIC and BIC.A method to assess the eects of environmental factors on model parameters was also studied and applied to the comparison of three levels of Nitrogen (control, standard and high dose). Taking into account the IIV, our model showed that plants receiving Nitrogen tended to have a later time of initiation, a higher rate of leaf appearance, and an earlier rupture time, but these dierences were not dose-dependent (no dierences between standard and high dose of Nitrogen). No dierences were found on the leaf appearance rate of the second phase between the three treatments.

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Section: Discussionmentioning

confidence: 99%

Modelling the interindividual variability of organogenesis in sugar beet populations using a hierarchical segmented model

Baey¹,

Didier²,

Lemaire³

et al. 2013

Ecological Modelling

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“…According to (Jullien et al 2011), the number of leaves can be modeled as a function of the thermal time having piecewise constant rst derivatives. Thus, estimating the thermal times corresponding to the boundaries of the dierent development stages amounts to nding the thermal times at which the slopes of this function changes.…”

Section: Statistical Modelingmentioning

confidence: 99%

“…& Louarn 2014). For these reasons, the leaf appearance rate is required by many plant models that integrates physiological processes of plant growth (Evers, Vos, Fournier, Andrieu, Chelle & Struik 2005;Jullien, Mathieu, Allirand, Pinet, de Reye, Cournede & Ney 2011). Studying the variations of these variables of plant development according to growing conditions makes it possible to improve the parameterization of plant models which will in turn increase the accuracy of model simulations and predictions (Gabrielle, Denoroy, Gosse, Justes & Andersen 1998).…”

Section: Introductionmentioning

confidence: 99%

“…For many species, this relationship is linear and the inverse of the slope is called the phyllochron, that is the time between the appearance of two leaves (Rickman & Klepper 1995). For some species, the number of leaves on the main stem ts with a piecewise linear continuous function with two change-points as observed on wheat (Baker, Allen, Boote, Jones & Jones 1990), rice (Tivet 2000;de Raissac, Audebert, Roques & Bolomier 2004), beetroot (Lemaire, Maupas, Cournede & de Reye 2008) and rapeseed (Jullien et al 2011;Gomez & Miralles 1990). …”

Section: Introductionmentioning

confidence: 99%

“…As far as oilseed rape is concerned, the rst phase corresponds to the rosette stage (Miralles, Ferro & Slafer 2001). The change-point had been manually estimated at 610 degree.day at the middle of January in the region of the north of France (Jullien et al 2011). In the second phase, the phyllochron is reduced (acceleration of the leaf appearance rate) and the second change-point is the anthesis developmental stage (end of leaf appearance and beginning of ower development).…”

Section: Introductionmentioning

confidence: 99%

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Change-Point Estimation in the Multivariate Model Taking into Account the Dependence: Application to the Vegetative Development of Oilseed Rape

Brault

Lévy‐Leduc

Mathieu

et al. 2018

JABES

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Biomass-Based Leaf Curvilinear Model for Rapeseed (Brassica napus L.)

Zhang¹,

Zhang²,

Ge³

et al. 2016

Computer and Computing Technologies in Agriculture IX

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Leaf is one of the most important photosynthetic organs of rapeseed (Brassica napus L.). To quantifyrelationships between the leaf curve and the corresponding leaf biomassfor rapeseed on main stem, this paper presents a biomass-based leaf curvilinear model for rapeseed. Various model variables, includingleaf length, bowstring length, tangential angle,and bowstring angle, were parameterized based on data derived from the field experiments withvarieties, fertilizer, andtransplanting densities during 2011 to 2012, and 2012 to 2013growingseasons. And then weanalysed the biological significance of curvilinear equation for straight leaves,constructed the straight leaf probabilistic modelon main stem,quantified the relationship between leaf curvature and the corresponding leaf biomass, and constructed the leaf curvilinear model based on the assumption and verification of the curvilinear equation form for curvingleaf. The probability of straight leaf can be quantified with piecewise function according tothe different trend in the normalized leaf ranks ((0, 0.4],and (0.4, 1]). The leaf curvature decreased with the increasing of leaf biomass, and can be described with reciprocal function. The curve of straight leaf and the curving leafcan besimulated by linear equation and thequadratic function, respectively. Our models were validated withthe independent dataset from the field experiment, and the results indicatedthat the model could effectively predict thestraight leaf probability and leaf curvature, which would be useful for linking the rapeseed growth model with the rapeseed morphological model, and set the stagefor the development of functional-structural rapeseed models.

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Characterization of the interactions between architecture and source–sink relationships in winter oilseed rape (Brassica napus) using the GreenLab model

Abstract: This work is a promising first step in the construction of a structure-function model for a plant as complex as WOSR. Once tested for other environments and/or genotypes, the model can be used for studies on WOSR architectural plasticity.

Cited by 52 publications

References 33 publications

Modelling the interindividual variability of organogenesis in sugar beet populations using a hierarchical segmented model

Modelling the interindividual variability of organogenesis in sugar beet populations using a hierarchical segmented model

Change-Point Estimation in the Multivariate Model Taking into Account the Dependence: Application to the Vegetative Development of Oilseed Rape

Biomass-Based Leaf Curvilinear Model for Rapeseed (Brassica napus L.)

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