title: Influence of deficit irrigation on strawberry (Fragaria × ananassa Duch.) fruit quality.
abstract: BACKGROUND
  Three different irrigation regimes - upper limit of field capacity (UFC), -12 kPa); lower limit of field capacity (LFC), -33 kPa; and deficit irrigation (DI), -70 kPa) were established on silty-loam soil and monitored with tensiometers. Yield and fruit quality of 'Flamenco' and 'Eva's Delight' ever-bearing strawberry cultivars were monitored. The aim of the study was to evaluate the effect of different irrigation regimes on the content of sugars, organic acids and phenolic compounds using high-performance liquid chromatography-mass spectrometry HPLC/HPLC-MS.
  
  
  RESULTS
  Deficit irrigation significantly increased the content of sugars (from 1.1- to 1.3 fold), organic acids (from 1.1- to 1.3-fold), their ratio (from 1.1- to 1.2-fold) and the content of most identified phenolics in cv. 'Flamenco'. Conversely, higher amounts of total sugars and organic acids (1.7- to 1.8-fold) were detected in 'Eva's Delight' strawberries at UFC and LFC irrigation. Deficit irrigation generally decreased strawberry yield of cv. 'Eva's Delight'.
  
  
  CONCLUSIONS
  The results suggest superior fruit quality and taste of strawberries grown under minor deficit irrigation for cv. 'Flamenco'. © 2016 Society of Chemical Industry.
authors.affiliation: Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000, Ljubljana, Slovenia.
authors.forename: Nika
authors.initials: N
authors.lastname: Weber
authors.affiliation: Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000, Ljubljana, Slovenia.
authors.forename: Vesna
authors.initials: V
authors.lastname: Zupanc
authors.affiliation: Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000, Ljubljana, Slovenia.
authors.forename: Jerneja
authors.initials: J
authors.lastname: Jakopic
authors.affiliation: Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000, Ljubljana, Slovenia.
authors.forename: Robert
authors.initials: R
authors.lastname: Veberic
authors.affiliation: Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000, Ljubljana, Slovenia.
authors.forename: Maja
authors.initials: M
authors.lastname: Mikulic-Petkovsek
authors.affiliation: Agronomy Department, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000, Ljubljana, Slovenia.
authors.forename: Franci
authors.initials: F
authors.lastname: Stampar
mesh_terms: D000144:Acids, Acyclic / Q000032:analysis / Q000378:metabolism; D057914:Agricultural Irrigation; D000975:Antioxidants / Q000032:analysis / Q000378:metabolism; D002934:Cinnamates / Q000032:analysis / Q000378:metabolism; D003247:Conservation of Natural Resources; D000069599:Crop Production; D018556:Crops, Agricultural / Q000737:chemistry* / Q000254:growth & development / Q000378:metabolism; D003433:Crosses, Genetic; D004040:Dietary Carbohydrates / Q000032:analysis; D005419:Flavonoids / Q000032:analysis / Q000096:biosynthesis; D063427:Food Quality; D031985:Fragaria / Q000737:chemistry* / Q000254:growth & development / Q000378:metabolism; D005638:Fruit / Q000737:chemistry* / Q000254:growth & development / Q000378:metabolism; D006801:Humans; D006880:Hydroxy Acids / Q000032:analysis / Q000378:metabolism; D055595:Mechanical Phenomena; D009753:Nutritive Value; D010636:Phenols / Q000032:analysis / Q000378:metabolism; D000069600:Plant Breeding; D012677:Sensation; D017524:Slovenia; D013045:Species Specificity; D013649:Taste
chemical_list: D000144:Acids, Acyclic; D000975:Antioxidants; D002934:Cinnamates; D004040:Dietary Carbohydrates; D005419:Flavonoids; D006880:Hydroxy Acids; D010636:Phenols
keywords: Strawberry; irrigation; organic acids; phenolic compounds; sugars