An analysis of the balance between root and shoot activity in Lolium perenne cv. Melvina. Effects of CO concentration and air temperature.

This study investigated the mechanisms which control the partitioning between roots and shoots in plants subjected to changes in environment. Two types of analyses were used: firstly, an examination of the cost and revenue associated with investment in different plant parts, and secondly, a test of the principle of functional equilibrium between roots and shoots, i.e.