Abstract
The response of 10 locally isolated ectomycorrhizae belonging to 9 genera alongwith 2 unidentified ones was assessed in in vitro for mycorrhizal colonization and plant growth in Kail pine (Pinus wallichiana). The studies revealed that typical ectomycorrhizae were established on inoculated plants within 3-4 weeks of inoculation. Maximum plant height and better mycorrhizal root colonization was noticed by Pisolithus tinctorius followed by Hebeloma crustuliniforme and Suillus sp. isolate 2. Maximum shoot and root dry weight of 265.0 and 36.5 mg plant-1 was recorded in P. tinctorius inoculated plants followed by H. crustuliniforme (229.3 and 29.8 mg), Suillus sp. isolate 2 (199.0 and 25.5 mg) and M-G1 (180.7 and 22.9 mg). The acid phosphatase activity of the isolates tested ranged from 140 to 330 m moles ρ nitrophenol phosphate g-1 with highest activity by P. tinctorius and lowest activity by Cenococcum granifrome.
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