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Les cépages résistants, du labo à la vigne. Quand l’expérimentation met à l’épreuve les pratiques vitivinicoles, les variétés de vigne et les propriétés du vin

Abstract : Vine varieties resistant to mildew (caused by Plasmopara viticola) and powdery mildew (caused by Erysiphe necator) are being selected in France. Their particularity, which lies in their potential ability to counter the attacks of two major vine pathogens, is a promise to reduce the use of phytosanitary products in vineyards. However, their agronomic, oenological and organoleptic qualities are little known. This thesis aims to take another look on varietal selection, which usually seeks to determine the intrinsic properties of a variety by disconnecting it from its uses. On the contrary, I suggest to consider that the properties of the vine, whether they are linked to resistance or to the quality of the wines, change in meaning and character according to testing, the places where they are put to the test, and their uses. Empirically, this thesis is mainly based on three fields in the South of France, which allow us to follow different experiments with resistant grape varieties: - the mobilisation of some actors in Languedoc to be allowed to test resistant grape varieties that are protected by the breeder; - the unique experience of a winegrower who decided to experiment on his own the French and foreign resistant grape varieties he managed to obtain, from vine caring to wine bottling; - the monitoring of a project to create resistant grape varieties for the typicity of Rosé wines from Provence. I have shown that the instability of living organisms, which I describe with the case of resistance to pathogens and its risks of bypassing, requires a reconsideration of the role of the winegrower, who until now has been put aside or hidden in the varietal creation process.
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Submitted on : Thursday, December 16, 2021 - 9:44:08 AM
Last modification on : Sunday, June 26, 2022 - 3:25:47 AM
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  • HAL Id : tel-03482568, version 1

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Sophie Tabouret. Les cépages résistants, du labo à la vigne. Quand l’expérimentation met à l’épreuve les pratiques vitivinicoles, les variétés de vigne et les propriétés du vin. Sociologie. Université Paris sciences et lettres, 2021. Français. ⟨NNT : 2021UPSLM033⟩. ⟨tel-03482568⟩

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