Abstract:

To understand cultural and physiological characteristics of ectomycorrhizal fungi was the key to utilize them in large scale production. In this paper the growth characteristics of two ectomycorrhizal fungi, Boletus edulis and Leccinum scabrum were studied on different media, temperature, pH value, different kinds of carbon and nitrogen, and also the resistance to salinity and alkalinity of the two fungi were investigated. The results showed that B. edulis adapted to grow on MMN media and utilized glucose, starch and beef extract best, and L. scabrum was well to grow on media of PDA, MMN and MRD with glucose and beef extract as the sources of carbon and nitrogen; The two fungi could use (NH₄)₂SO₄ and KNO₃ very well;and could be able to grow at a pH range 4～9,and grew best at 5～6;the best growth temperature for them was 25～30 ℃. The test also indicated that they had an ability of tolerance to salinity and alkalinity, but the mycelia dry mass dropped down evidently under a double stresses of pH and salt treatment.

Key words: Boletus edulis, Leccinum scabrum, Physiological characteristic, Salinity and alkalinity resistance