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Master Thesis

Phénotypage de la tolérance aux stress du blé

Abstract : Climate change is expected to increase the variability of stress experienced by common wheat, jeopardizing the sustainability of production systems. In addition, drought, nitrogen and cryptogamic stresses (Septoria tritici) have a current and future major importance, by penalizing yields. Tolerance is an answer to these issues because it increases yield insurance in case of multiple stress by maintaining a high level of production despite the presence of symptoms. However, its phenotyping is complex; the development of reliable and inexpensive high-throughput methods is fundamental to improve the efficiency of varietal selection of tolerance. This study aims at generating large ranges of early and late stress, causing moderate IFVI and yield losses, to promote the expression of G×E variability in tolerance. The complementarity of conventional and high-throughput phenotyping (Phenofield®) should allow to meet the goals of the trial: identify the combination of stress expressing the largest tolerance range, the cultural traits related to tolerance and evaluate the accuracy and robustness of the proxies of the desired traits. This study is a first step in the phenotyping of tolerance by showing that the experimental setup has indeed enabled the establishment of a wide range of phenotypes. The combination of conventional and telemetry measures will ultimately allow a much more precise tolerance measurement to provide an answer to the previous goals.
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Master Thesis
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Submitted on : Thursday, December 5, 2019 - 4:25:29 PM
Last modification on : Monday, July 6, 2020 - 3:38:27 PM
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  • HAL Id : dumas-02395749, version 1



Mélanie Makarovsky. Phénotypage de la tolérance aux stress du blé. Sciences du Vivant [q-bio]. 2019. ⟨dumas-02395749⟩



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