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ABSTRACT
The study was conducted to investigate the effect of Sodium Chloride (NaCl) on the growth of the two mushrooms, Pleurotus ostreatus and Marasmiellus inoderma. Culture plates supplemented with different concentrations of NaCl (0,0.4, 0.8 1.2, 1.6 and 2.0 g/200 ml) were inoculated with 5mm agar blocks of M. inoderma and P. ostreatus. After 3 days of inoculation, M. inoderma was observed to have completely colonizes the culture plates. Pleurotus on the other hand, took an average of 7-8 days to completely colonize the plats. The highest mycelia extension was recorded for M. inoderma (84.89±1.5mm) at 0.8g/200 ml, after 3days 0f inoculation. The least mycelia extension for M. inoderma (61.6±1.65mm) at the control. The highest mycelia extension recorded for P. ostreatus was 80.3±2.4mm at 0g/200ml after 7days of inoculation. The least mycelia extension for P. ostreatus was observed in 2g/200ml salt level (47.6±7.5mm) after 7days of inoculation. The growth rate of M. inoderma steadily increased from 0g/200ml to 2g/200ml. It decreases as concentration increases. The biomass of M. inoderma was highest (0.85±0.1) at 0.8g/200mm and highest for P. ostreatus (0.71±0.1) at 0g/200ml. The study shows that the test mushrooms vary depending on the salt concentrations. The work has revealed that NaCl at concentrations as high as 2g/200ml can support the growth of M. inoderma and P. ostreatus.
