The present invention relates to a packaging system for storing and/or transporting different kind of fruits packaged in clamshell, punnets or trays during long periods of time, comprising a collapsible structure including four vertical columns with side walls collapsible on a pallet-type base, exhibiting an arrangement of internal trays or grids, and wrappable curtains configuring front and rear walls, such that it doesn't require the use of cardboard, wood or plastic boxes; preferably the system also comprises cooling means, gas-generating means and controlling means.