Density of Pythium zingiberum Oospores in Relation to Infection of Chenopodium quinoa Seedlings
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概要
- 論文の詳細を見る
The infectivity tests were repeated and the average results obtained indicated that more than 1×10^4 oospores per gram oven dry soil (OPG) caused damping-off of 80% of Chenopodium quinoa seedlings. About 20% damping-off occurred with 1×10^3 OPG. With 1×10^2 OPG the average was 6%, and penetrating mycelium and oospores were easily recognized. Neither penetration nor disease incidence was found with 1×10 OPG. Thus, the minimum number of oospores capable of inducing disease was estimated to be 10-1×10^3/g oven dry soil. The fact that P.zingiberum needs much more oospores than P.butleri to induce disease may be connected with lower germinability of oospores of the former.
- 大阪府立大学の論文
- 1985-03-31
著者
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Ikeda Akihiro
Laboratory Of Plant Pathology College Of Agriculture:(present Address)aichi-ken Agricultural Researc
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ICHITANI Takio
Laboratory of Plant Pathology, College of Agriculture
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Ichitani Takio
Laboratory Of Plant Pathology College Of Agriculture
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