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KMID : 0379119830110040163
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Korean Journal of Mycology
1983 Volume.11 No. 4 p.163 ~ p.167
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Effect of Sulfur Dioxide on Growth of the Fruit Body of Oyster Mushroom , Pleurotus ostreatus
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Abstract
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Oyster mushroom, Pleurotus ostreatus, was exposed to 0.625, 1.25, 2.5 and 5.0 ppm SO₂ for 15, 30, 60, 120 and 180 minutes at the tiny button stage in order to study the effect of sulfur dioxide on growth and cap discoloration of the mushroom. The cap color was changed from grey to greyish blue at low dosage of sulfur dioxide, and with the lapse of exposing time and racing sulfur dioxide concentration up, the color was changed to light brown and dark brown. The cap dicoloration was begun by the exposure of sulfur dioxide to 0.625 ppm for 120 minutes, to 1.25 ppm for 30 minutes and to 2.5 ppm for 15 minutes. By the exposure of sulfur dioxide to 1.25 ppm for 120 minutes, to 2.5 ppm for 30 minutes, its growth was inhibited, but the fruit body was died by the exposure of the gas to 2.5 ppm for 180 minutes and to 5.0 ppm for 60 minutes. Sulfur dioxide inhibited conspicuously the development of basidia and basidiospores of the mushroom and 20 to 25 percent of basidiospores formed were abnormal. Ethylene production by mushroom exposed io sulfur dioxide was not recognized.
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