neb:

 

It's not treated but bred for extended shelf life, which tends to select for longevity over taste.  This is why fruit sold in, and in NZ imported from, the US, has almost no taste.  It's also why things like peaches and plums from your backyard, half-life a few days, taste vastly better than anything from a supermarket, half-life several weeks, and often picked half-ripe and cool-stored.

 

It lends credence to local food movements. Some produce such as pineapples & bananas are unavoidably transported long distances, since they mostly grow in the tropics.