ISHS Acta Horticulturae 682: V International Postharvest Symposium
EFFECT OF PREHARVEST AND POSTHARVEST CALCIUM TREATMENTS ON CHILLING INJURY AND DECAY OF COLD STORED ´FORTUNE´ MANDARINS |
| Authors: | S. D'Aquino, A. Palma, M. Tedde, F. Fronteddu |
| Keywords: | calcium, chilling injury, cold storage, lecitin |
| DOI: | 10.17660/ActaHortic.2005.682.81 |
| Abstract:
‘Fortune’ mandarins are very susceptible to chilling injury during cold storage. Calcium is reported to alleviate chilling injury in different horticultural products. In this experiment, the effect of foliar and postharvest application of calcium alone or in combination with soy lecithin on visual appearance, chilling injury and decay was studied. Trees were sprayed on 20 October, 19 November, 18 December 2002 or 21 January 2003 with a solution of 500 g/hl of a commercial product containing calcium. Fruit were harvested on 16 April and subjected to the following treatments of dipping in solution/emulsion of calcium, lecithin or calcium plus lecithin. Fruit were stored at 5°C for 2 months. Calcium reduced the severity of chilling injury either as preharvest or in postharvest application. Lecithin had also a beneficial effect in reducing the severity of peel alterations but showed no positive interaction in combination with calcium. However all treatments increased the incidence of decay especially when preharvest calcium spray was combined with postharvest calcium dipping. | |
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