ISHS Acta Horticulturae 682: V International Postharvest Symposium
RETAIN® MAINTAINS ´PINK LADY´™ FRUIT QUALITY DURING LONG TERM STORAGE |
| Authors: | J. Golding, S. Satyan, A.C. Rath, J. Jobling, H. James |
| Keywords: | Malus x domestica, storage, CA, ethylene, firmness, AVG, shelf life, fruit quality |
| Abstract:
‘Pink Lady’™ apples were harvested from two growing regions (South Australia and Victoria) and at two harvest maturities (early and late). Fruit were treated with aminoethoxyvinylglycine (AVG, ReTain®) at two different times in the orchard (7 and 21 days before harvest). Fruit were harvested according to maturity and stored at 0°C in controlled atmosphere (CA) storage (2% O2 and 1% CO2) or regular air storage. Fruit quality (internal ethylene concentration, firmness, background colour, starch, soluble solids content) were assessed at two monthly intervals for up 10 months storage. Fruit were subject to a two week shelf life at 20°C after six months storage. All air stored fruit were removed at six months storage. The ReTain® treatment significantly reduced ethylene production across all treatment and storage regimes, compared to the untreated control. Ethylene production was also lower in the ReTain® treatments during the 14 days shelf life at 20°C after six months storage. Flesh firmness (measured by penetrometer) was generally higher in the fruit stored in CA and in the ReTain® treated fruit. This effect was maintained during the entire storage period. The results show that the preharvest application of ReTain® on ‘Pink Lady’™ apples can be a useful tool for managing harvest and ensuring postharvest fruit quality after both air and CA storage. | |
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