Tina Hajdinjak (Author), Nataša Štajner (Author), Tjaša Cesar (Author), Robert Veberič (Author), Metka Hudina (Author), Jerneja Jakopič (Author)

Abstract

A relatively new, non-destructive, method for the assessment of optimal blueberry fruit maturity directly on the plant uses a DA-meter (delta absorbance) to measure chlorophyll absorbance (IAD). Here, ‘Aurora’ fruit quality parameters (peel color, fruit firmness), chemical composition (individual sugars, organic acids and phenolics) and the relative expression of anthocyanidin synthase (ANS) genes were examined at four different maturity stages (immature, light purple, darker purple, fully ripe). All observed parameters changed significantly during ripening and sometimes exhibited high correlation with IAD values, as R2 values ranged between 0.61 and 0.97. Peel lightness (L*), chroma (C*), fruit firmness and organic acids significantly decreased during ripening, while sugars, sugar/organic acid ratio, total phenolics and relative expression of ANS significantly increased. The current study is the first to determine IAD values during different maturity stages of ‘Aurora’ fruit using a DA-meter and to evaluate their correlation with the most commonly used quality parameters of ripe fruit, fruit chemical composition and relative expression of ANS.

Keywords

borovnica;parametri zrelosti;fenoli;antocianidin sintaza;klorofilna fluorescenca;fenolne spojine;highbush blueberry;DA-meter;maturity parameters;phenolics;anthocyanidin synthase;chlorophyll fluorescence;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
UDC: 634.1/.7
COBISS: 150548483 Link will open in a new window
ISSN: 2311-7524
Views: 307
Downloads: 51
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: Slovenian
Secondary keywords: borovnica;parametri zrelosti;fenoli;antocianidin sintaza;klorofilna fluorescenca;fenolne spojine;
Type (COBISS): Article
Pages: 14 str.
Volume: ǂVol. ǂ9
Issue: ǂiss. ǂ4, art. 501
Chronology: 2023
DOI: 10.3390/horticulturae9040501
ID: 18721692