 A third plant was chained to the first two plants, in which plant 3's roots were split between sharing Pot C with the second plant's roots and a new Pot D, and so on.In the study, six pea plants ("Pisum sativum") were chained together in seven pots.Drought was stimulated by adding mannitol, a sugar commonly used to initiate drought responses in plant studies, to Pot A such that only half the roots of the plant 1 were subjected to drought conditions.