Etude des effets de la réduction de l'irrigation du pêcher à différents stades de développement du fruit sur sa composition : phénotypage métabolique et profils métabolomiques

Abstract : Irrigation deficits have been applied to the different stages of the fruit development of Prunus persica L. Batch in order to study their effects on the composition. High-throughput metabolic phenotyping allowed determining the influence of these water shortages on the main compounds (major sugars and organic acids, total proteins and amino acids). Metabolomic profiling of a sample selection allowed studying a larger number of primary and secondary metabolites. Polar compounds (organic acids, sugars and amino compounds) have been identified and quantified using 1H-NMR and the semi-polar compounds (flavonoids and hydroxycinnamates) with LC-MS-QTOF. Multivariate and uni-variate statistical analyses highlighted the compounds that are sensitive to irrigation deficit depending on the stage of application. The water stress on stage II that corresponds to stone formation, did not affect the diameter and the flesh composition of the ripened fruit. Water stresses applied during the others stages, and combined stresses, caused a delay of ripening and lowered the organoleptic and nutritional quality of the fruit flesh.
Document type :
Master thesis
File URL :
http://docnum.univ-lorraine.fr/prive/BUS_M_2013_NOBLET_AGATHE.pdf
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https://hal.univ-lorraine.fr/hal-01778414
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Submitted on : Wednesday, April 25, 2018 - 4:38:57 PM
Last modification on : Thursday, April 26, 2018 - 1:15:51 AM

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Agathe Noblet. Etude des effets de la réduction de l'irrigation du pêcher à différents stades de développement du fruit sur sa composition : phénotypage métabolique et profils métabolomiques. Sciences de l'environnement. 2013. ⟨hal-01778414⟩

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