2000
DOI: 10.1051/ocl.2000.0329
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EVALUATION DE L’IMPACT ENVIRONNEMENTAL : GeneSys-Colza : un modèle des effets à moyen et à long terme des systèmes de culture sur les flux de gènes entre champs de colza et repousses dans un espace agricole

Abstract: Résumé :On a beaucoup parlé, lors de l'examen des demandes d'autorisation de mise en culture de variétés transgéniques de colza, des risques d'hybridation interspécifique du colza avec les crucifères sauvages, et d'introgression de transgènes dans les espèces adventices [1,2]. Les flux de gènes intraspécifiques ont moins attiré l'attention du grand public ; ils sont pourtant bien plus probables. Les transgènes peuvent être disséminés dans le temps, par l'intermédiaire de repousses de colza apparaissant dans le… Show more

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Cited by 4 publications
(2 citation statements)
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“…The detailed structure of the GENESYS model is presented by Colbach et al [1][2][3]. Only the main aspects will be described here.…”
Section: Model Presentationmentioning
confidence: 99%
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“…The detailed structure of the GENESYS model is presented by Colbach et al [1][2][3]. Only the main aspects will be described here.…”
Section: Model Presentationmentioning
confidence: 99%
“…In order to forecast the spread and behaviour of transgenes and their impacts in a wide range of situations, modelling is a key element as it is impossible to evaluate gene flow solely with field experiments. Consequently, the GENESYS model [1][2][3] was developed by INRA, in collaboration with Cetiom, to quantify the effects of cropping systems on transgene escape from rapeseed crops to rapeseed volunteers in neighbour fields and uncultivated areas, and in the subsequent crops. The aim of this model is to evaluate the influence of cropping systems (regional crop distribution, crop succession, cultivation techniques), in order to determine those cropping systems with a high dispersal risk, to design new cropping systems that limit gene flow, to evaluate the effect of changing practices and to identify rapeseed cultivar characteristics increasing/decreasing risk of gene flow.…”
mentioning
confidence: 99%