@article{oai:ir.kagoshima-u.ac.jp:00015233, author = {奥田, 絢子 and OKUDA, Ayako and 曽根, 晃一 and SONE, Koichi and 畑, 邦彦 and HATA, Kunihiko}, journal = {鹿児島大学農学部演習林研究報告, Research bulletin of the Kagoshima University forests}, month = {Mar}, note = {In order to investigate the patterns of damage due to outbreak of zonate leaf blight of Camellia sasanqua, we observed in the field to classify types of lesions on the basis of morphological criteria and studied seasonal variations in the occurrence of each type. Consequently, these lesions were classified into five types; “without rim”, “brown with rim”, “white with rim”, “irregular”, and “with rim only”. “Without rim” caused defoliation, while the others didn’t. “Without rim”, “brown with rim”, and “irregular” produced propagules, which cause infection. Propagules were found throughout the year, especially in periods with high rainfall and the temperature from 15 to 28°C. “Without rim” appeared frequently in periods with high rainfall and mean temperature from 15 to 25°C. “Brown with rim” appeared frequently in high temperature seasons, while “white with rim” in low temperature seasons. It was suggested that a part of the former changed into the latter. Most of “irregular” appeared frequently on young leaves. “With rim only” was suggested that this type of lesion was just beginning to emerge, because this type was very small and appeared suddenly in early spring. From these properties, it was shown that “without rim” caused acute damage with defoliation, while “brown with rim” and “irregular” caused chronic damage. Therefore, it’s suggested that different types of lesions play different roles in expansion cycle of this disease.}, pages = {1--16}, title = {鹿児島県のサザンカにおける輪紋葉枯病の病斑のタイプ分けと季節変動}, volume = {44}, year = {2019}, yomi = {オクダ, アヤコ and ソネ, コウイチ and ハタ, クニヒコ} }