GROWTH BEHAVIOUR OF ECTOMYCORRHIZAL FUNGI WITH DIFFERENT PHYSICAL FACTORS IN VITRO CONDITIONSB.N. JHA, G.D. SHARMA AND A.K. SHUKLA
Impact of physical factors namely, temperature, relative humidity, light intensity and pH were investigated on the growth of mycorrhizal fungi Collybia radicata, Laccaria laccata, Pisolithus tinctorius and Rhizopogon luteolus. Most of the fungi grew well at 25 °C but growth of R. luteolus and P. tinctorius was found better at 20 °C and 30 °C temperature respectively. High humidity level enhanced the growth of fungi on solid medium however; the growth of P. tinctorius was favoured by low level of humidity. Fungi grew well between 5 to 6 pH ranges. Acid phosphatase activity of ectomycorrhizal fungi was higher at 30 °C, low humidity, pH 3 and under light condition. Acid phosphatase activity was always higher than alkaline phosphatase activity.
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