Review of literature on camellia flower blight caused byCiborinia camelliae
作者:
C. H. Taylor,
P. G. Long,
期刊:
New Zealand Journal of Crop and Horticultural Science
(Taylor Available online 2000)
卷期:
Volume 28,
issue 2
页码: 123-138
ISSN:0114-0671
年代: 2000
DOI:10.1080/01140671.2000.9514132
出版商: Taylor & Francis Group
关键词: Ciborinia camelliae;camellia flower blight;distribution;epidemiology;apothecia;sclerotia;control
数据来源: Taylor
摘要:
Ciborinia camelliaeKohn is the most destructive pest or disease problem of camellias (Camelliaspp.) The pathogen is related to common and widespread plant pathogens in the generaSclerotiniaandBotrytinia(anamorph=Botrytis). Sclerotia form in infected petals and remain dormant in plant debris until the next season. In early spring, apothecia are produced from the sclerotia and release windborne ascospores. Infection causes the petals to turn brown and the flowers to fall prematurely. The disease has been identified in Japan (1919), the United States (1938), New Zealand (1993), and parts of Europe (1999). It has now spread over the lower North Island and upper South Island of New Zealand, with isolated outbreaks in Christchurch and Auckland. Control of this disease has proved difficult even though: (1) only camellia flowers are infected, (2) there is no secondary infection, and (3) ascospores are present for only 2–3 months each year. To date, fungicides have given less than satisfactory control of the disease and possible control measures are reviewed. Interest in potential biocontrol agents is growing but remains an unexplored alternative. Resistant varieties offer the best management option for the future.
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