Why Are There Two Types Of Potato 'Lateral Roots'?

TWO TYPES OF 'ROOTS'

Something else interesting about the new laterals developing from the potato root we saw last week are the two apparently different types of 'root': thick ones (pink) and thin ones. Are they both roots or just the thicker ones with the root hairs? Can't see how they could be tuber* rhizomes, since these arise from stems. I know adventitious roots also come from stems. But not from the same source, surely. But the two types seem to be attached to the parent at different angles.

Too soon to determine any of this. Not even clear whether each of these types of 'root' is attached to the main root. See what develops.

* A potato tuber is a bulky short terminal part of an underground stem (rhizome) whose 'eyes' are really buds at nodes. Shoots and roots grow from these eyes upon planting. We often see these on old potatoes in the cupboard which have started to grow. The main bud is at the end of the tuber and exerts dominance over the other lesser 'eyes' in the way expected in stem terminal buds.