黄蜀葵の黒斑病

概要

論文の詳細を見る
Since 1913, an undescribed bacterial leaf sports of Hibiscus has been under observation in Korea. The most noticeable lesions in leaves are found as irregular black sports which cause the distortion of the leaves. The causal bacteria have been isolated repeatedly and its pathogenicity proved by inoculation with pure culture. The disease is briefly described as follows: Symptoms: The disease affects the cotyledons, especially young leaves when 2-3 leaves are expanded, but reduced when the plants matured. The first signs of the disease are minute circular black spots which enlarge in size gradually and take circular or irregular outlines, then finally the margins become angular linited by the veins. The outer parts of the spots take on obscure whitish yellow colour or water soaked appearence, and when the leaves are severely attacked the whole platns become blackend and dry out.
日本植物病理学会の論文