The xylem of a radish contains ducts, fibers and parenchyma cells. The ducts are conduits that transport water upwards, the fibers are the scaffolding that supports the root form, and the parenchyma cells are the places where nutrients are stored.
The fiber content of radish xylem is very low, and the taste is more delicate. At the same time, when growing, the secondary xylem will differentiate into a large number of thin-wall cells to store nutrients and water, so the water of radish is very sufficient and the taste is crisp.
Why is Loeb so brittle because it's full of water
Radish is crunchy because it contains a lot of water and tastes crunchy.
Because there is water inside the radish, the head is relatively tender and brittle