AusdemInstitutfürWeinanalytikundGetränkeforschung derHochschuleGeisenheimUniversity Prof.Dr.HelmutDietrich unddem InstitutfürPŇanzenbauundPŇanzenzüchtungII derJustusͲLiebigͲUniversitätGießen ProfessurfürBiometrieundPopulationsgenetik Prof.Dr.MatthiasFrisch Microclimaticinfluencesongrapequality Dissertation zurErlangungdesGradeseinesDoktors derAgrarwissenschaften imFachbereich Agrarwissenschaften,OekotrophologieundUmweltmanagement JustusͲLiebigͲUniversitätGießen Vorgelegtvon MatthiasFriedelausAlzenau Gießen,31.03.2017 Selbständigkeitserklärung Icherkläre:IchhabedievorgelegteDissertationselbständigundohneunerlaubte fremde Hilfe und nur mit den Hilfen angefertigt, die ich in der Dissertation angegebenhabe.AlleTextstellen,diewörtlichodersinngemäßausveröffentlichten Schriften entnommen sind, und alle Angaben, die auf mündlichen Auskünften beruhen,sindalssolchekenntlichgemacht.Beidenvonmirdurchgeführtenundin der Dissertation erwähnten Untersuchungen habe ich die Grundsätze guter wissenschaftlicher Praxis, wie sie in der „Satzung der JustusͲLiebigͲUniversität Gießen zur Sicherung guter wissenschaftlicher Praxis“ niedergelegt sind, eingehalten. Declarationofauthorship Ideclare: thisdissertationsubmittedisaworkof myown,writtenwithoutany illegitimate help by any third party and only with materials indicated in the dissertation. I have indicated in the text where I have used text from already publishedsources,eitherwordforwordorinsubstance,andwhereIhavemade statements based on oral information given to me. At any time during the investigationscarriedoutbymeanddescribedinthedissertation,Ifollowedthe principlesofgoodscientificpracticeasdefinedinthe“StatutesoftheJustusLiebig UniversityGiessenfortheSafeguardingofGoodScientificPractice”. Ort,Datum MatthiasFriedel &RQWHQWV Chapter1 GeneralIntroduction.........................................................................1 Chapter2 Comparisonofdifferentmeasurementtechniquesandvariable selectionmethodsforFTͲMIRinwineanalysis1.............................11 Chapter3 Impactoflightexposureonfruitcompositionofwhite'Riesling' grapeberries(VitisviniferaL.)2.......................................................20 Chapter4 Lightpromotesexpressionofmonoterpeneandflavonolmetabolic genesandenhancesflavourofwinegrapeberries(VitisviniferaL. cv.Riesling)3....................................................................................32 Chapter5 Influenceofberrydiameterandcolouronsomedeterminantsof winecompositionofVitisviniferaL.cv.Riesling4...........................45 Chapter6 GeneralDiscussion..........................................................................57 Chapter7 Summary.........................................................................................71 Kapitel8 Zusammenfassung..........................................................................74 Appendix............................................................................................85 1FriedelM.,PatzC.D.&DietrichH.2013.Comparisonofdifferentmeasurementtechniques andvariableselectionmethodsforFTͲMIRinwineanalysis.FoodChemistry141(4),4000Ͳ 4007 2FriedelM.,StollM.,PatzC.D.,WillF.&DietrichH.2015.Impactoflightexposureonfruit compositionofwhite‘Riesling’grapeberries(VitisviniferaL.).Vitis54(3),107Ͳ116 3FriedelM.,FrotscherJ.,NitschM.,HofmannM.,BogsJ.,StollM.&DietrichH.2016.Light promotesexpressionofmonoterpeneandflavonolmetabolicgenesandenhancesflavour ofwinegrapeberries(VitisviniferaL.cv.Riesling).AustralianJournalofGrapeandWine Research22(3),409Ͳ422 4FriedelM.,SorrentinoV.,Blank,M.&SchüttlerA.2016.Influenceofberrydiameterand colouronsomedeterminantsofwinecompositionofVitisviniferaL.cv.Riesling.Australian JournalofGrapeandWineResearch22(2),215Ͳ225 i &KDSWHU 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