A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute

ISSN - Print: 1021-3279 | Online: -

Heat treatment is often used for improve the dimensional stability of wood. In this study, the effect of heat treatment on physical and mechanical properties of Mahogany (Swietenia macrophylla King) and Acacia hybrid (Mangium x Auriculiformis) wood were examined. Samples were exposed to temperature levels of 110°C, 130°C and 150°C for time spans ranging from 3, 6 and 9 hours. Treated samples had higher mechanical properties compared to control samples. Based on the findings, dimensional stability of all types of wood samples improved with heat treatment. It seems that properties of these wood evaluated were more pronounced with increasing temperature and time durations.


Propagation and conservation by vegetative means were attempted for better preservation of true-to-type genetic characteristics with higher yield planting materials of Acacia hybrid. In this regard, in vitro micro propagation of Acacia hybrid through shoot tip culture was initiated from outdoor mature plant on MS basal medium supplemented with 1.0 mg/L BAP. The shoot tip cultures produced axillary shoot bud and used for multiple shoot production. The multiple shoot production rate was optimized on MS medium supplemented with different concentrations of cytokinins. The highest number (20) of multiple shoots per culture was recorded on MS medium augmented with 2.0 mg/L BAP after 8 weeks of culture. The rooting was initiated on Yi MS medium enriched with different concentrations of IBA. The best rooting rate 90% was obtained on medium having 2.0 mg/L IBA after 28 days of culture. The well-developed rooted plantlets were transferred to in vivo condition for further growth and acclimatization. More than 95% of transplanted plantlets survived and grew well in polybag under natural condition.

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