Man made vegetable is

The man-made vegetable is Rutabaga.
A man-made (or person-made) vegetable is one that humans have created through cross-breeding and selective breeding. This helps science and the food industry create new varieties of foods with attractive qualities like appearance, texture and flavour.
Rutabaga roots are eaten as human food in a variety of ways and the leaves can be eaten as a leaf vegetable. The roots and tops are also used for livestock, either fed directly in the winter or foraged in the field during the other seasons.