Tropical Forests and Their CropsThe tropics are the source of many of our familiar fruits, vegetables, oils, and spice, as well as such commodities as rubber and wood. Moreover, other tropical fruits and vegetables are being introduced into our markets to offer variety to our diet. Now, as tropical forests are increasingly threatened, we face a double fold crisis: not only the loss of the plants but also rich pools of potentially useful genes. Wild populations of crop plants harbor