INCREASE IN EARLY GROWTH AND NUTRIENT UPTAKE OF <em>SHOREA</em> <em>SEMINIS</em> SEEDLINGS INOCULATED WITH TWO ECTOMYCORRHIZAL FUNGI
Keywords:
Dipterocarpaceae, ectomycorrhiza, spore, mycelium, nutrient uptake, reforestation, tropical rain forestAbstract
TURJAMAN, M., TAMAI, Y., SEGAH, H., LIMIN, S. H., OSAKI, M. & TAWARAYA, K. 2006. Increase in
early growth and nutrient uptake of Shorea seminis seedlings inoculated with two ectomycorrhizal fungi.
Seedlings of Shorea seminis were inoculated with spores or mycelium of two ectomycorrhizal (ECM) fungi,
Pisolithus arhizus and Scleroderma columnare, and were grown in pots containing sterilized peat soil for seven
months. The percentage of ECM colonization was 35–37% in roots inoculated with mycelium and 61–65%
in roots inoculated with spores. ECM colonization increased shoot height and biomass of S. seminis. It also
increased shoot nitrogen (N) and phosphorus (P) uptakes in S. seminis. A positive relationship was found
between N or P uptake and shoot biomass of S. seminis inoculated with both ECM fungi. This has implications
for the successful regeneration of dipterocarps seedlings and rehabilitation in degraded tropical rain forests.