Mycorrhizal associations in Hong Kong Fagaceae

摘要

Castanopsis fissaRehd.Wils. is widely distributed from the tropics to the temperate regions of China and Japan and is an important forest component in Hong Kong. Pot-grownC. fissaseedlings inoculated with vegetative mycelial inocula of seven ectomycorrhizal fungi for 20 weeks were analysed for growth performance and mineral nutrient uptake of N, P, K and Ca. Shoot growth stimulation in all fungal treatments generally occurred in the first 4–8 weeks of seedling development. Uptake of P was generally enhanced by all fungi inoculated. Seedlings inoculated withPisolithus tinctorius(Pers.) Coker and Couch andCenococcum geophilm(Sow.) Fredinard et Winge, which colonized 22 and 33 of roots respectively, exhibited growth stimulation. The results indicate thatP. tinctoriusandC. geophilumare suitable for use in large-scale nursey inoculatio