1. Department of Postharvest Science of Fresh Produce; ARO, the Volcani Center; P.O. Box 6 Bet Dagan 50250 Israel
2. Faculty of Agricultural, Food and Environmental Quality Sciences; Hebrew University of Jerusalem; Rehovot 76100 Israel
3. Department of Fruit Tree Crops; ARO, the Volcani Center; P.O. Box 6 Bet Dagan 50250 Israel