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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