Collection and Chemical Composition of Pure Phloem Sap fromZea maysL.

摘要

Pure phloem sap was collected from leaf sheaths ofZea maysL. by the insect laser technique, and its chemical composition was analyzed. Sucrose was the only sugar detected. The predominant inorganic ions were K+and Cl−. The adenylate energy charge of phloem sap was between 0.72 and 0.8