Articles
OCCURRENCE AND SPREAD OF THE PATHOGENS ON WALNUT (JUGLANS REGIA) IN SHANDONG PROVINCE, CHINA
Article number
1050_47
Pages
347 – 351
Language
English
Abstract
The occurrence of walnut (Juglans regia) diseases was observed by a sentinel survey in walnut orchards of Shandong Province, China since 2007. Pathogens causing these diseases were identified by morphology and molecular methods.
The result showed that the serious diseases of walnut were walnut anthracnose, walnut blight, walnut canker, walnut shoot dieback and walnut brown apical necrosis.
Walnut anthracnose was caused by Colletotrichum gloeosporioides; the complex infection of Xanthomonas arboricola pv. juglandis, Pantoea agglomerans and Alternaria spp. would induce walnut blight and brown apical necrosis; walnut canker was caused by Botryosphaeria dothidea; B. dothidea and Phomopsis sp. could be isolated from walnut dieback.
The report of the occurrence and spread of these pathogens on walnut in Shandong Province of China will facilitate the integrated disease management on walnut orchards.
The result showed that the serious diseases of walnut were walnut anthracnose, walnut blight, walnut canker, walnut shoot dieback and walnut brown apical necrosis.
Walnut anthracnose was caused by Colletotrichum gloeosporioides; the complex infection of Xanthomonas arboricola pv. juglandis, Pantoea agglomerans and Alternaria spp. would induce walnut blight and brown apical necrosis; walnut canker was caused by Botryosphaeria dothidea; B. dothidea and Phomopsis sp. could be isolated from walnut dieback.
The report of the occurrence and spread of these pathogens on walnut in Shandong Province of China will facilitate the integrated disease management on walnut orchards.
Publication
Authors
Y.F. Zhu, Y.F. Yin, W.W. Qu, K.Q. Yang
Keywords
walnut anthracnose, walnut blight, brown apical necrosis, walnut canker, walnut shoot dieback
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