The researchers studied how early potato plants grow stolons and form tubers under different conditions. They looked at how quickly stolons appeared, how they grew, and when tubers started forming. They also checked how stolon growth varied with different conditions. By changing the environment in three experiments, they could see how these features changed. They found differences in stolon growth patterns, timing of tuber initiation, and intensity of tuber formation. The study showed that the growth conditions affected how stolons developed and formed tubers.