UTILIZATION OF SUGARS AND STARCH AS CARBON SOURCES IN THE ROOTING OF ETIOLATED STEM SEGMENTS OF POPULUS NIGRA

Abstract

Stem segments of Populus nigra L. did not root in water or auxin alone but did so in 0.5% ribose, glucose and sucrose, sucrose being most effective. The addition of 0.1 mg/1 IAA or IBA to the medium stimulated rooting; IBA being more effective. Starch also induced rooting especially in combination with auxins. Starch was hydrolysed by enzymes that leached out of the segments and auxins enhanced their activity. Copyright © 1972, Wiley Blackwell. All rights reserved