Effects of humidity and temperature on ascospore discharge of <Emphasis Type="Italic">Graphostroma platystoma</Emphasis> in the laboratory and in the field |
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Authors: | Email author" target="_blank">Mitsutoshi?TsunodaEmail author |
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Institution: | (1) Forestry and Forest Products Research Institute, Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan |
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Abstract: | The effects of air humidity and temperature on the ascospore discharge of Graphostroma platystoma were experimentally investigated. The ascospores were not discharged from the stromata in air at 100% relative humidity (RH). However, they were discharged from the wetted stromata at 3°, 10°, and 24°C under 100% RH or nearly so. The amount of the discharged ascospore was large at 24°C, medium at 10°C, and small at 3°C. The ascospores in the rainwater that washed down the stromata were counted after rainfall in the field. The discharge was observed from September to the following May. |
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Keywords: | Ascospore Discharge Graphostroma platystoma |
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