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Registros recuperados: 12
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Ability of new durum wheat pure lines to meet yield stability and quality requirements in low input and organic systems Organic Eprints
Colomb, B.; Desclaux, D.; Debaeke, P.; Justes, E.; Burger, P..
Low-input production schemes adopted in organic or conventional farms require crop varieties that combine good product quality and high yield stability under non optimal environmental conditions (Gooding et al., 1999). These traits are not yet found among the durum wheat genotypes available in France. Consequently the cultivation of this crop is hardly successful in stockless organic farms in southern France, which are characterised by very low nitrogen resources. Some hopes emerged with the identification of new durum wheat pure lines with a high grain protein content in breeding experiments conducted near Montpellier in 2001 and 2002. The aim of the present work was to confirm and elucidate the origin of the enhanced protein performance of these new...
Tipo: Conference paper, poster, etc. Palavras-chave: Breeding; Genetics and propagation Farm nutrient management.
Ano: 2004 URL: http://orgprints.org/6491/1/colomb.pdf
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An integrated study of the development of organic rice cultivation in the Camargue (France)- Organic Eprints
Mouret, J.C.; Hammond, R.; Dreyfus, F.; Desclaux, D.; Marnotte, P.; Mesléard, F..
In the Camargue, rice and durum wheat are associated in rotations that have an ambivalent ecological impact: on the one hand, these two crops contribute to the preservation of the surrounding ecosystem, while on the other hand, when cropped intensively, they can threaten the ecological equilibrium of this protected area. In this context, organic agriculture would seem to be an alternative adopted by a certain number of producers and processors. However, the pioneers of this practice encounter numerous problems, both agronomic and economic. The study presented here aims: to construct a pluridisciplinary approach to analyse the conditions of the development of organic cereal cultivation in the Camargue: to identify the principal factors that limit the...
Tipo: Conference paper, poster, etc. Palavras-chave: Cereals; Pulses and oilseeds Crop combinations and interactions.
Ano: 2004 URL: http://orgprints.org/6492/1/turin%2Driz.pdf
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Changes in the concept of genotype x environment interactions to fit agriculture diversification and decentralized participatory plant breeding: pluridisclipinary point of view Inra
Desclaux, D.; Nolot, J.M.; Chiffoleau, Y.; Gozé, E.; Leclerc, C..
The standardization of environments (E) encouraged by modern society and by the productivist model of agriculture has resulted in the standardization of genotypes (G) thereby reducing G × E interaction. New societal values call for the diversification of agriculture to fit contrasted environments. This process can be depicted by four models defined by two axes, one socio-economic (individual logics versus collective governance), and the other agro-ecological (reductionist versus systemic approaches). These models differ in (i) their objectives (from improvement in yield to the empowerment of farmers), (ii) their specific expectations with respect to genotypes (from inherited genetic resources to varieties that represent genetic, ethical and social...
Tipo: Journal Article Palavras-chave: INTERACTION GENOTYPE - ENVIRONNEMENT; SELECTION PARTICIPATIVE PLANT BREEDING; SOCIOTECHNICAL APPROACH; DIVERSITY OF AGRICULTURAL MODELS; HETEROGENEOUS ENVIRONMENTS; REPRESENTIVITY; ON-FARM SELECTION; EX-SITU; IN-SITU.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200830324511&uri=/notices/prodinra1/2010/08/
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Designing alternative cropping systems based on durum wheat introcrops in the south of France ; perfcom, an interdisciplinary project for integrated multi-scale analysis Inra
Lopez Ridaura, S.; Bernard, L.; Cohan, J.P.; Corre-hellou, G.; Desclaux, D.; Fustec, J.; Haefliger, M.; Justes, E.; Villenave, C.; Hinsinger, P..
Tipo: Conference Paper Palavras-chave: CULTURE INTERCALAIRE CROPPING SYSTEMS; AGRO-ECOSYSTEMS; SUSTAINABLE FARMING; CEREALS INTERCROPPING SYSTEMS; LEGUMES; DURUM WHEAT.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011db6320df&uri=/notices/prodinra1/2011/04/
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Developments in breeding cereals for organic agriculture Inra
Wolfe, M.S.; Baresel, J.P.; Desclaux, D.; Goldringer, I.; Hoad, S.; Kovacs, G.; Loschenberger, F.; Miedaner, T.; Østergard, H.; Lammerts van Bueren, E.T..
The need for increased sustainability of performance in cereal varieties, particularly in organic agriculture (OA), is limited by the lack of varieties adapted to organic conditions. Here, the needs for breeding are reviewed in the context of three major marketing types, global, regional, local, in European OA. Currently, the effort is determined, partly, by the outcomes from trials that compare varieties under OA and CA (conventional agriculture) conditions. The differences are sufficiently large and important to warrant an increase in appropriate breeding. The wide range of environments within OA and between years, underlines the need to try to select for specific adaptation in target environments. The difficulty of doing so can be helped by...
Tipo: Journal Article Palavras-chave: ARTHROSE; CULTURE DIRECT AND INDIRECT SELECTION VARIETY TESTING; PARTICIPATORY PLANT BREEDING WIDE AND SPECIFIC ADAPTATION CROP DIVERSITY; ORGANIC AGRICULTURE.
Ano: 2008 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008ad8265e2&uri=/notices/prodinra1/2011/05/
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Developments in breeding cereals for organic agriculture Organic Eprints
Wolfe, M.S.; Baresel, J.P.; Desclaux, D.; Goldringer, I.; Hoad, S.; Kovacs, G.; Löschenberger, F.; Miedaner, T.; Østergard, H.; Lammerts van Bueren, E.T..
The need for increased sustainability of performance in cereal varieties, particularly in organic agriculture (OA), is limited by the lack of varieties adapted to organic conditions. Here, the needs for breeding are reviewed in the context of three major marketing types, global, regional, local, in European OA. Currently, the effort is determined, partly, by the outcomes from trials that compare varieties under OA and CA (conventional agriculture) conditions. The differences are sufficiently large and important to warrant an increase in appropriate breeding. The wide range of environments within OA and between years, underlines the need to try to select for specific adaptation in target environments. The difficulty of doing so can be helped by...
Tipo: Journal paper Palavras-chave: Food security; Food quality and human health Breeding; Genetics and propagation.
Ano: 2008 URL: http://orgprints.org/15284/1/wolfe%2Detal%2D2008%2DEUPH%2DOrganic_breeding%2Dp323%2D346.pdf
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From Ideotype to Realtype concept: Dynamic management of plant breeding by a multidisciplinary and participatory way. Example of organic durum wheat Organic Eprints
Desclaux, D.; Chiffoleau, Y.; Nolot, J.M..
A travers l’exemple du blé dur, les auteurs explorent l’évolution temporelle de la notion d’idéotype mais aussi comment la diversification actuelle des environnements en AB influe sur la diversification des idéotypes et rend nécessaire une démarche dynamique et participative d’amélioration des plantes. Cette façon renouvelée de concevoir et gérer la sélection amène à dépasser la notion d’idéotype, qui reste associée à des critères de sélection a priori, pour préférer le terme de « realtype », qui traduirait la mise à l’épreuve de l’idéotype à la réalité des terrains. Ce n’est donc pas la construction de l’idéotype « par rapport à » mais bien « dans » le contexte qui est recherché et permise par un dispositif collectif représentant la diversité des acteurs...
Tipo: Journal paper Palavras-chave: Breeding; Genetics and propagation.
Ano: 2013 URL: http://orgprints.org/26253/1/Desclaux_2013_CIAG_Vol32.pdf
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Innovation and research in organic farming: A multi‐level approach to facilitate cooperation among stakeholders Organic Eprints
Bellon, S.; Desclaux, D.; LE PICHON, V..
A wider range of stakeholders is expected to be involved in organic research. A decision‐support tool is needed to define priorities and to allocate tasks among institutions. Based on research and management experience in organic research, the authors have developed a framework for experimental and research projects. The framework is based on a multi‐level approach. Each level is defined according to the directness of the innovation impact on the organic systems. The projects carried out for each level were assessed over a ten-year period. Two applications are presented: analysis of crop protection strategies in horticulture and plant breeding programmes. When combined with four development models of organic...
Tipo: Conference paper, poster, etc. Palavras-chave: Farming Systems; Research methodology and philosophy.
Ano: 2010 URL: http://orgprints.org/19501/1/Bellon_et_al_2011_19501_Conference_Paper.pdf
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Needed complementarity of actors for variety innovation Inra
Desclaux, D.; Nolot, J.M.; Triboulet, P.; Lorentz, B.; Chiffoleau, Y..
In France, farmers may use only registered crop varieties, listed in the annual French or European official catalogue of species and varieties. For arable species, that represents the context of this paper, a variety is defined by official legislation as being distinct, uniform and stable (DUS) and is evaluated for its value for cultivation and use (VCU) on environments homogenized by an intensive cropping system. The evaluation is mainly focused on the yield and the industrial quality. But new demands are emerging resulting in -or in response to- the diversification of agriculture. Consequently the demand for a diversity of varieties well adapted to new cropping system and to new outlets is increasing. Our objective is to study the equilibrium between...
Tipo: Conference Paper Palavras-chave:  VARIETY INNOVATION; GxE INTERACTIONS; PARTICIPATORY PLANT BREEDING; ORGANIC BREEDING; PLANT IMPROVMENT.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011c1e6adeb&uri=/notices/prodinra1/2011/03/
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Participatory Plant Breeding Methods for Organic Cereals Organic Eprints
Desclaux, D..
Formal breeding methods were not always suitable to address the very large diversity of both environmental conditions and end-user needs. Both were frequently encountered either in marginal areas of developing countries or in organic farms of EEC. Participatory plant breeding (PPB) methods represent alternatives aimed to improve local adaptation breeding, to promote genetic diversity, to empower farmers and rural communities. The term PPB refers to a set of breeding methods usually distinguished by the objectives (functional or process approach), institutional context (farmer-led or formal-led), forms of interaction between farmers and breeders (consultative, collaborative or collegial), location of breeding (centralized or decentralized), stage of...
Tipo: Conference paper, poster, etc. Palavras-chave: Systems research and participatory research Breeding; Genetics and propagation.
Ano: 2005 URL: http://orgprints.org/6493/1/driebergen.pdf
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Participatory plant breeding methods for organic cereals : review and perspectives Inra
Desclaux, D..
Formal breeding methods were not always suitable to address the very large diversity of both environmentalconditions and end-user needs. Both were frequently encountered either in marginal areas of developingcountries or in organic farms of EEC. Participatory plant breeding (PPB) methods represent alternatives aimed toimprove local adaptation breeding, to promote genetic diversity, to empower farmers and rural communities. Theterm PPB refers to a set of breeding methods usually distinguished by the objectives (functionnal or processapproach), institutional context (farmer-led or formal-led), forms of interaction between farmers and breeders(consultative, collaborative or collegial), location of breeding (centralized or decentralized), stage of...
Tipo: Conference Paper Palavras-chave: SELECTION PARTICIPATIVE; INNOVATION VARIETALE; INTERACTION GENOTYPE - ENVIRONNEMENT PLANT BREEDING; ORGANIC BREEDING; GENOTYPE X ENVIRONMENT INTERACTION; ON-FARM TRIALS; DURUM WHEAT.
Ano: 2005 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200887427ad6&uri=/notices/prodinra1/2009/01/
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Pluralité des agricultures biologiques: Enjeux pour la construction des marchés, le choix des variétés et les schémas d’amélioration des plantes Inra
Desclaux, D.; Chiffoleau, Y.; Nolot, J.M..
Dans le contexte actuel de diversification des systèmes agricoles, l’Agriculture Biologique (AB) est souvent réduite à une voie de diversification parmi d’autres, ou à un prototype innovant d’agriculture. Or, des observations, enquêtes et expérimentations menées dans le cadre de recherches participatives, fondent la nécessité de considérer l’AB comme plurielle. Inspirés des travaux de Sylvander et al. (2006), cette pluralité peut être illustrée à travers 4 modèles d’agriculture, définis selon un axe socioéconomique opposant les logiques individuelles à une gouvernance collective, et un axe agroécologique distinguant approches analytiques et systémiques. La considération de cette pluralité modifie-t-elle la manière d’envisager les innovations variétales,...
Tipo: Journal Article Palavras-chave: FILIERE; TERRITOIRE; DIVERSITE DES SYSTEMES DE CULTURE; SELECTION PARTICIPATIVE; INTERACTION GENOTYPE X ENVIRONNEMENT; APPROCHES SOCIOTECHNIQUES; MODELISATION; INNOVATION VARIETALE DIVERSITY OF CROPPING SYSTEMS; PARTICIPATORY PLANT BREEDING; GENOTYPE X ENVIRONMENT; INTERACTION; SOCIO-TECHNICAL APPROACHES; MODELLING; VARIETAL INNOVATION.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2009a27d6a56&uri=/notices/prodinra1/2010/09/
Registros recuperados: 12
Primeira ... 1 ... Última
 

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