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International Journal of Medicinal Mushrooms
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ISSN Druckformat: 1521-9437
ISSN Online: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v16.i4.70
pages 365-374

Mycelial Growth Rate and Macro- and Micromorphological Characteristics of Medicinal Species of Genus Ganoderma (Higher Basidiomycetes) from Iran

Somayeh Keypour
Bioscience Faculty, Shahid Beheshti University, Evin, Tehran, Iran
Hossein Riahi
Bioscience Faculty, Shahid Beheshti University, Evin, Tehran, Iran
Naser Safaie
Department of plant Pathology, College of Agriculture, Tarbiat Modares University, Tehran, Iran
Ali Borhani
Agriculture and Natural Research Center of Mazandaran, Passand Forest and Rangeland Research Station, Behshahr, Iran


Mycelial growth rate is a distinguishing quality that demonstrates continuous variation in different isolates collected from various hosts and locations. The objectives of this research were (1) to reinvestigate the previous identification of Iranian species, and (2) to recognize the best native isolate(s) for cultivation of different Ganoderma species. Of 78 samples collected from different hosts and sites, only 43 mycelia could be purified and examined for further study. Growth rate (GR; Δd/Δt) and growth coefficient (GC; dgh/t) were analyzed by growing isolate culture on 2% malt-extract agar medium (pH 5.5) incubated at 25°C. Macro- and micromorphological studies on mycelia and fruiting bodies such as basidiospore and cutis microcharacters as well as fruiting body quality were used for precise identification. Results revealed that samples belonged to 4 species: G. lucidum, G. applanatum, G. resinaceum, and G. australe. Among all samples, the isolate morphologically identified as G. applanatum showed the best GR (12 mm/day) and good GC (128 mm/day), followed by the 2 other isolates identified as G. resinaceum (GRs and GCs of 11 and 55 mm/day and 10.9 and 43.6 mm/day, respectively).

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