Abstract

A study was designed to evaluate seed storage, imbibition capacity and seed pre-sowing treatments on Newbouldia laevis. This was with a view to determining the optimum method(s) of seed storage, enhancement of imbibition capacity and the pre-sowing treatments. In the initial studies these were recognized as impediments to good seed germination. Significantly varied results (P < 0.05) were obtained during the period of storage (12 months). The control, 2 weeks after harvest had 100% viability, 1 month 95% viability while at 12 months 15% viability was obtained. Rapid imbibition was observed in the study; within 24 h moisture gain was 2.0% over the initial. It stabilized at 2.0% moisture gain up to 88 h. Soaking in water under room temperature for 24 h yielded the highest mean value of 60% germination while the control had 10%. Lowest mean value of 40% germination was obtained in hot water pre-sowing treatment. Evidence from the study showed that a maximum storage period of 1 month, imbibition period of 24 h and soaking in water under room temperature for 24 h are optimum for germinating and raising seedlings of N. laevis.

Key words: Newbouldia laevis, imbibition, pre-sowing treatment, seed storage.