Anon. (1996). The National Collection Databases for Victoria, New South Wales, Tasmania and Queensland. Institute for Horticultural Development, Department of Natural Resources and Environment, Victoria. Chambers, S.C. (1982) Lists of diseases recorded on ornamentals, native plants and weeds in Victoria before 30 June, 1980. Dep. Ag. Report. Tech. Report 61 Crop Protection Compendium (1999) - Global Module CAB International CD-Rom Loffler, HJM & Rumine, P. (1991) Virulence & vegetative compatibility of Dutch and Italian isolates of F. oxysporum f. sp. lilii. J. Phytopath. 132:12-20. [42] Moore, W. C. (1979). Diseases of Bulbs. [2nd Ed.] Ministry of Agriculture, Fisheries and Food. Her Majesty’s Stationery Office, London. 205 pp. [45] Smith, I M Dunez, J Lilliott, R A Phillips, D H and Archer, S A [1988]. [Eds]. European Handbook of Plant Diseases. Blackwell Scientific Publications. 583 pp. Westcott, C [1989]. Plant Disease Handbook. [4th Ed]. Revised by R Kenneth Horst. Van Nosstrand Reingold Co, New York. 803 pp.
43.
Fusarium oxysporum f. sp. narcissi Snyder & Hansen ['mitosporic fungi']
Synonyms or changes in combination: Fusarium bulbigenum Cooke & Massee. Common name(s): Narcissus basal rot. Host(s): Narcissus (daffodil). Plant part(s) affected: Whole plant affected including bulbs, flowers & leaves. Distribution: Europe (no specific details of presence in Netherlands but assumed to be present), UK. There is one record of this fungus in Western Australia (Shivas, 1989) and F. oxysporum is reported on Narcissus in Victoria. However, these records in Australia do not indicate whether or not Koch’s postulates or in vitro tests were undertaken to confirm pathogen identity up to specialis level. Biology: Detailed information specific to the specialis narcissi is not available. The fungus causes very destructive rot of bulbs resulting in stunted plants, leaf tip damage and deformed flowers due to rotting of bulbs and limited root development. Particularly a problem when bulbs are stored incorrectly at high temperatures.
The fungus could survive for many years as dormant chlamydospores or as a saprobe in plant debris. During favourable conditions chlamydospores germinate and infect susceptible plants through roots. On death of the host, micro and macro conidia can be dispersed by water splash droplets. Movement of infested soil or plant material may transmit the fungus more widely. Entry potential: High, as the bulbs and roots can be infected. Establishment potential: High, hosts are present in Australia.