Co-Authors:
Philosoph-Hadas, S., Dept. of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Shtein, I., Dept. of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Perzelan, Y., Dept. of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Shahar-Ivanov, Y., Dept. of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Salim, S., Dept. of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Kochanek, B., Dept. of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Meir, S., Dept. of Postharvest Science of Fresh Produce, Agricultural Research Organization (ARO), Volcani Center, Bet Dagan, Israel
Abstract:
Four Australian leafy ornamentals products with high export potential as decorative foliage were selected and protocols were developed for optimum postharvest handling to allow successful sea shipment from Israel to Europe. The selected foliage included: Dodonaea 'Dana', an Israeli hybrid of Dodonaea viscosa L., displaying purple tinted leaves and red decorative fruits; Grevillea robusta, which has dark green delicately bipinnatifid or fernlike leaves, with grayish-white or rusty undersides; Grevillea baileyana, which has unique bicolored appearance, being green on the upper side and bronze/gold on the lower side of the leaf; Eucalyptus gomphocephala 'Kaduri- Kkl', an Israeli hybrid of E. gomphocephala producing a shrub of globular form, displaying leaves which are reddish when young and green when mature. The postharvest problems encountered during the export of these ornamentals include: leaf wilting (Dodonaea 'Dana', E. gomphocephala 'Kaduri-Kkl'), leaf blackening (G. robusta), and chilling injury (CI) (G. baileyana). Various strategies were used to overcome these problems and enable successful sea transport (11-12 days/2°C) without loss of quality. For Dodonaea 'Dana', abscisic acid (ABA) treatments combined with silver thiosulfate (STS) were applied to reduce leaf transpiration and wilting. G. robusta was pulsed with quaternary ammonium compounds and surfactants (TOG-11), in combination with STS, in order to achieve reduced leaf blackening and wilting. For G. baileyana, an acclimatization 24-h period at 7°C prior to shipment at 2°C reduced CI symptoms. E. 'Kaduri-Kkl' pulsing with 0.5% Long Life formulation (0.42% glucose and preservatives) reduced wilting and extended vase life. These postharvest treatments, which can assist in preserving the quality and vase life of these selected, novel foliage products during shipment, can significantly increase their potential for use in floriculture.
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