Rooting of lignotubers of some Eucalypts with Indole - 3 Butyric Acid
Rooting of lignotubers of some Eucalypts with Indole - 3 Butyric Acid
A. B. I. Igboanugo
ABSTRACT
Lignotubers, obtained from three year old seedling of
Eucalyptus cloeziana, E. tereticronis and E. grandis
growing in the nursery, were soaked in 25,50, 75 and
100ppm concentrations of Indole-3 Butyric Acid (IBA) and
in distilled water for 3, 6, 12 and 24 hours and left in
Petri dishes, in order to asses their rooting abilities.
After four weeks, when most of the un-rooted lignotubers
had started drying up, the lignotubers were assessed for differences in root number and length. The lower the
concentration if IBA, and the fewer the number of hours
soaked the higher the number of adventitious roots
formed. However, in higher concentrations of IBA,
rooting was achieved in longer hours of soaking only.
Root length increased with the concentration of IBA, but
no roots were formed in 75ppm concentration. There is
the potential for raising planting stocks of E.
cloeziana and the other eucalypts from lignotubers.
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September 1987
Vol. 37, Iss. 3
