Gardening

It won't hurt them a bit. The leaves might get slightly droopy. You should probably pull a few of the bottom ones off, anyway, since they would just rot in the soil or water.

I'd also suggest using a rooting hormone powder (sold at most any garden center) if you try rooting them in soil

The callousing process that the cut wound will undergo as it sits exposed to the air is important - -the plant starts making corky tissue which repels disease organisms.

Dracaena marginata is a tough plant, you should find it easy to root. Be patient, though, it can take a couple of months for the cane sections to start showing any development.