20.500.12556/RUL-145623 Correlation between destructive and non-destructive measurements of highbush blueberry (Vaccinium corymbosum L.) fruit during maturation 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 (I$_{AD}$). 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 I$_{AD}$ values, as R$^2$ 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 I$_{AD}$ 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. highbush blueberry DA-meter maturity parameters phenolics anthocyanidin synthase ANS chlorophyll fluorescence borovnica parametri zrelosti fenoli antocianidin sintaza klorofilna fluorescenca fenolne spojine true false true Angleški jezik Slovenski jezik Članek v reviji 2023-04-26 15:35:39 2023-04-26 15:35:45 2024-02-16 14:35:41 0000-00-00 00:00:00 2023 0 0 14 str. iss. 4, art. 501 Vol. 9 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 634.1/.7 2311-7524 10.3390/horticulturae9040501 150548483 horticulturae-09-00501.pdf horticulturae-09-00501.pdf 1 F02A5200C4720792EC00A612F285B9DE 95764ff1297fad07e968f6aec8993cc8b3eda19edee77178c2a2c3cf76ba868b 750f2f6d-e437-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=168569 https://www.mdpi.com/2311-7524/9/4/501 1 0e8aabba-e437-11ed-a314-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=168568 Biotehniška fakulteta 0 0 0