クワモザイク病の病徴発現と温度との関係 : 第2報ヒダ葉と糸葉の比較

概要

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We have compared on the kinds and intensity of symptoms appeared under the different temperatures, i. e., l5°, 23°and 30℃, between the filiform and the enation of mulberry plants, characteristic to mulberry mosaic disease. On the fillform materials, conspicuous filiform symptoms and some ring spots developed, but nothing showed enation symptoms. On the other hand, enations, ring spots and yellowing spots were shown from the enation materials, while filiform symptoms did not developed from them. Effect of temperature on the intensity of symptoms was very different between the enation and fillform materials. On the enation materials collected from Gumma Prefecture, severe symptoms developed when the plants were kept at 23°and 5℃, but no symptom at 30℃, although the enation materials from Shiga Prefecture showed symptoms so slightly that could not discuss the relationships between symptom appearance and temperature. On the filiform materials, symptoms developed severely at 23°and 30℃, and the intensity of symptoms on plants kept at 23℃ was higher than those at 30℃, but when plants were grown at l5℃, symptoms were almost masked. (Received February 8, l966)
日本植物病理学会の論文
1966-09-30