An innovative method of production of planting stock of Hopea odorata, Hopea helferi and Hopea wightiana in the shade houses
2003
Tsan, F.Y. | Ahmad Fauzi, M.S. | Wan Rasidah, K.
Production of planting materials of Hopea odorata, Hopea helferi and Hopea wightiana was limited by the recalcitrant behaviour of their seeds. These seeds generally survived 2-4 weeks after they shed from their mother trees. Only H. odorata seeds retained their viability of above 60% when cold stored for a period of up to 2 months at 18+- 2 deg C. The seedlings of three species, however, could be maintained at a slow growth phase at densities of 300-600 seedlings/m2 in the shade houses of 20% and 30% RLI, depending of the species. The survival rates were above 70% while the height and stem diameter growth was only approximately 10cm and 0.2cm respectively at one year after storage under such low light conditions.
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