期刊
SCIENTIA HORTICULTURAE
卷 219, 期 -, 页码 335-343出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scienta.2017.03.001
关键词
Ethylene; Flesh firmness loss; Fruit quality; I-AD; Prunus persica (L.) Batch; Ripening season
类别
资金
- INIA fellowship from the Ministry of Science and Innovation of the Spanish government
On-tree and postharvest softening of 11 yellow flesh nectarine cultivars with different commercial harvest seasons (early, mid and late) were studied under Mediterranean conditions (Lleida, NE-Spain). Fruit were harvested weekly at five consecutive harvest dates (from H1 to H5) over three consecutive years (2009-2011). Diameter, percentage of skin overcolor (SC), flesh firmness (FF), I-AD index (the difference in absorbance between 670 and 720 nm), visible reflectance spectra, soluble solids content (SSC), titratable acidity (TA), ethylene synthesis, objective skin color and postharvest softening rate were measured. The decline in flesh firmness and the IAD were both significantly affected by cultivar and ripening season. Low acid (TA < 6 g of malic acid L-1) cultivars such as 'Big Top', 'Nectareine', 'Honey Royale', 'Big Nectared' and 'Nectalady', had a lower firmness decline than acid ones (TA >= 6 g of malic acid L-1), both on-tree and during postharvest, resulting in a better commercial and postharvest performance. A high and significant positive correlation was found between IAD and flesh firmness (r = 0.72, P <= 0.01). Early cultivars tended to lose flesh firmness and IAD faster than mid and late cultivars. The softening rate during the postharvest period was mainly dependent on ripening season. Early ripening nectarines soften faster than mid and late ones. (C) 2017 Elsevier B.V. All rights reserved.
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