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Poster communications

Relative influence of cropping systems, injury profiles and institutional determinants on the spatio-temporal structure of bread wheat diversity in France

Rémi Perronne 1 David Makowski 2 Céline Schott 3 Mourad Hannachi 4 Robin Goffaux 5 Pierre Montalent 6 Jean-Noel Aubertot 7 Vincent Cellier 8 Stephane Lemarié 9 Aline Fugeray-Scarbel 9 Claude Pope de Vallavieille 10 Marc Leconte 10 Jerome Enjalbert 6 Isabelle Goldringer 6
1 UREP - Unité Mixte de Recherche sur l'Ecosystème Prairial - UMR
2 Agronomie
3 ASTER Mirecourt - Agro-Systèmes Territoires Ressources Mirecourt
4 SADAPT - Sciences pour l'Action et le Développement : Activités, Produits, Territoires
5 FRB - Fondation pour la recherche sur la Biodiversité
6 GQE-Le Moulon - Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale)
7 AGIR - AGroécologie, Innovations, teRritoires
8 DIJ EPOISSES - Domaine expérimental d'Époisses
9 GAEL - Laboratoire d'Economie Appliquée de Grenoble
10 BIOGER - BIOlogie et GEstion des Risques en agriculture
Abstract : In the current context of increasingclimate instabilities and new pest pressures, in situ crop diversity has been recognized as a relevant way to avoid crop failure, ensure yield inter-annual stability while reducing the use of synthetic inputs. However, before implementing any future deployment of within-crop diversity, a detailed nowledge of the main drivers affecting this diversity appears necessary. The temporal evolution of in situ genetic diversity of bread wheat has been previously shown to be spatially structured among regions in France over the period 1980-2006. Our study was carried out to identify the main drivers of this spatio-temporal structure of crop diversity at a fine spatio-temporal scale. We conducted a series of statistical analyses and expert surveys to identify the effects of three main catergories of drivers : agricultural systems, pathogen pressures and institutional determinants of the formal wheat sector. We hypothesized that this set of drivers could have a higher explanatory power of the varietal diversity - i.e. based only on the varietal denomination which allows varietal choice by drivers - the cultivation area of bread wheat, the nature and the diversity of the preceding crops, and the pressure of some pathogens - explained the spatio-temporal structure of varietal diversity more than the genetic one. We highlighted a correlation between bread wheat varietal and genetic diversity and a greater diversity of preceding crops, suggesting that more diversified agroecsystems seemed also promoted a higher within-crop diversity.
Keywords : triticum aestivum L. varietal diversity genetic diversity temporal change spatial structure cropping system preceding crop pathogen pressure institutional determinant of the formal wheat sector
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Poster communications
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https://hal.inrae.fr/hal-02737850
Contributor : Migration Prodinra <>
Submitted on : Tuesday, June 2, 2020 - 7:56:22 PM
Last modification on : Thursday, April 15, 2021 - 3:32:13 AM

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  • HAL Id : hal-02737850, version 1
  • PRODINRA : 423259

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INRAE | INRA | AGRONOMIE | GAEL | AGROPARISTECH | CNRS | UGA

Citation

Rémi Perronne, David Makowski, Céline Schott, Mourad Hannachi, Robin Goffaux, et al.. Relative influence of cropping systems, injury profiles and institutional determinants on the spatio-temporal structure of bread wheat diversity in France. 4. Young Natural History scientists Meeting, Feb 2017, Paris, France. 169 p., 2017, YNHM : Young Natural History scientists Meeting. ⟨hal-02737850⟩

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