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A review of white rust ( Puccinia horiana Henn.) disease on chrysanthemum and the potential for its biological control with Verticillium lecanii (Zimm.) Viégas
Author(s) -
WHIPPS J. M.
Publication year - 1993
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1993.tb04025.x
Subject(s) - biology , rust (programming language) , basidiospore , spore , biological pest control , puccinia , germination , botany , verticillium , spore germination , fungus , horticulture , computer science , mildew , programming language
Summary The biology, aetiology and epidemiology of Puccinia horiana , the cause of white rust disease of chrysanthemum ( Chrysanthemum spp.) is reviewed in relation to current environmental, cultural and chemical methods for its control. Importantly, basidiospore release, germination and infection can take as little as 5 h at optimum r.h. (96%) and temperature (between 17–24°C). Recent developments using the fungus Verticillium lecanii for the control of insects on glasshouse‐grown all‐year‐round chrysanthemums rely upon the maintenance of r.h. during night periods in excess of 95%, thus predisposing plants to white rust attack. However, V. lecanii is unusual in that it can also parasitise spores and fruiting structures of a range of rust fungi including P. horiana . This mycoparasitic ability is also reviewed, and against this background, the potential for an integrated insect and white rust control programme on all‐year‐round chrysanthemums is assessed.