POSTHARVEST HANDLING AND QUALITY PRESERVATION OF SELECTED NOVEL LEAFY ORNAMENTALS SHIPPED BY SEA TRANSPORT
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.
Philosoph-Hadas, S., Shtein, I., Perzelan, Y., Shahar-Ivanov, Y., Salim, S., Kochanek, B. and Meir, S. (2015). POSTHARVEST HANDLING AND QUALITY PRESERVATION OF SELECTED NOVEL LEAFY ORNAMENTALS SHIPPED BY SEA TRANSPORT. Acta Hortic. 1097, 63-72
chilling injury, Dodonaea, Eucalyptus gomphocephala, Grevillea, leaf blackening, postharvest treatments, water balance