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Master Thesis

Analyse de la variabilité génotypique de la tolérance du tournesol à l'orobanche (Orobanche cumana Wallr) au sein des ressources génétiques de Maïsadour Semences

Abstract : The broomrape is a parasite that causes significant economic losses for the sunflower crop, especially in Eastern Europe. This parasite attaches to the roots of the host plant and diverts the vascular system in his favor. The sunflower has a qualitative resistance to broomrape populations from A to E and quantitative resistance to broomrape populations F and >F. The construction of a reference collection of 351 lines using a 32 SSR markers, was performed with the software PowerMarker to maximize the diversity of available genetic resources at Maïsadour Semences. The morphological criteria and the response to broomrape were studied in this collection in two infected places with different broomrape populations to study the genetic determinants of sunflower tolerance to broomrape. The evolution of development and vigor of the plant and the precocity of different genotypes were found interesting to study the impact of broomrape on culture.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-01084025
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Submitted on : Tuesday, November 18, 2014 - 1:27:34 PM
Last modification on : Monday, July 6, 2020 - 3:38:21 PM
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Aurore Gautier. Analyse de la variabilité génotypique de la tolérance du tournesol à l'orobanche (Orobanche cumana Wallr) au sein des ressources génétiques de Maïsadour Semences. Sciences agricoles. 2014. ⟨dumas-01084025⟩

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