The Influence of Storage Conditions and Fruit Quality Parameters on the Minimization of Surface Pitting in Sweet Cherries
2025
Pavol Suran | Veronika Danková | Tomáš Nečas | Pavlína Knapová | Lucie Plecitá
Surface pitting is a key postharvest disorder in sweet cherries (<i>Prunus avium</i> L.) that reduces visual quality and shortens shelf life. A three-year study evaluated 35 sweet cherry accessions (32 breeding lines, 3 cultivars) to assess the role of genotype, fruit quality traits, and storage treatments in minimizing pitting damage. Mechanical damage-induced surface pitting was quantified using a resistance index (RI), which ranged from 1.31 ± 0.26 (‘10072’) to 2.72 ± 0.45 (‘16806’), highlighting strong genotypic differences. Fruit firmness showed a strong negative correlation with the resistance index (RI) (r = −0.606). In contrast, soluble solids content (SSC) and fruit size had weak or non-significant correlations with RI, with correlation coefficients of r = −0.022 and r = −0.070, respectively. Only in the second harvest, ultra-low oxygen (ULO) storage resulted in the lowest RI (2.35 ± 0.13). Pre- and post-treatment with 1-methylcyclopropene (1-MCP) gave similar results (2.50 ± 0.06 and 2.50 ± 0.15). Ozone pre-treatment was moderately effective (2.66 ± 0.14). Ozone post-treatment had the highest RI (2.85 ± 0.08). The results emphasize the importance of applying protective treatments prior to mechanical damage-induced surface pitting and selecting genotypes with high firmness and storage stability. This study provides a comprehensive framework for breeding and storage conditions aimed at reducing surface pitting in sweet cherries.
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