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Pathogens & Hosts

Several Oidium species have been reported to occur in Hawaii (Raabe, et al., 1981). The following is a list of the reported pathogens from this genus (Oidium) and the hosts they infect. The list is organized by the scientific name of the pathogen species (CAPITAL LETTERS), followed by the symptom or disease a given pathogen causes on the listed hosts.

OIDIUM CARICAE

Powdery Mildew:

• papaya (Carica papaya)

OIDIUM SP.

Powdery Mildew:

• candlenut tree (Aleurites moluccana)
• angelonia (Angelonia salicariaefolia)
• aster (Aster sp.)
• rex begonia (Begonia rex-cultorum)
• rutabaga (Brassica campestris var. napobrassica)
• coffee senna (Cassia occidentalis)
• florist's chrysanthemum (Chrysanthemum morifolium)
• Coreopsis sp.
• cosmos (Cosmos bipinnata)
• cucumber (Cucumis sativus)
• winter squash (Cucurbita maxima)
• pumpkin (Cucurbita pepo)
• summer crook-neck squash (Cucurbita pepo var. melopepo)
• gourd (Cucurbita pepo var. ovifera)
• Cucurbita sp.
• Dahlia ?variabilis
• Dahlia sp.
• Flora's painbrush (Emilia sonchifolia)
• Erigeron sp.
• wili wili (Erythrina sandwicensis)
• strawberry (Fragaria chiloensis var. ananasa)
• Transvaal daisy
• soybean (Glycine max)
• Jerusalem artichoke (Helianthus tuberosus)
• okra (Hibiscus esculentus)
• hydrangea (Hydrangea macrophylla)
• Hydrangea sp.
• lettuce (Lactuca sativa)
• bottle gourd (Lagenaria siceraria)
• Macroptilium atropurpureum
• cassava (Manihot esculenta)
• alfalfa (Medicago sativa)
• bitter melon (Momordica charantia)
• mung bean (Phaseolus aureus)
• garden bean (Phaseolus vulgaris)
• pea (Pisum sativum)
• edible-podded pea (Pisum sativum var. macrocarpon)
• tea rose (Rosa odorata)
• Rosa sp.
• chayote (Sechium edule)
• mamane (Sophora chrysophylla)
• stephanotis (Stephanotis floribunda)
• Verbena sp.
• Vigna radiata
• Xanthium italicum
• Xanthium saccharatum
• cultivated zinnia (Zinnia elegans)
• Zinnia sp.

Other:

• Euphorbia sp.

Taxonomy

KINGDOM: Mycetae (fungi)

DIVISION: Eumycota

SUBDIVISION: Deuteromycotina (The imperfect fungi)

CLASS: Hyphomycetes

ORDER: Hyphales (Moniliales)

Characteristics

No information is available for this section at the moment, please check future Knowledge Master Versions.

Disease Types

No information is available for this section at the moment, please check future Knowledge Master Versions.

Management

No information is available for this section at the moment, please check future Knowledge Master Versions.

References

Agrios, G.N. 1988. Plant Pathology, 3rd edition. Academic Press, Inc: San Diego. 803 pp.

Farr, , D.F., G.F. Bills, G.P. Chamuris, and A.Y. Rossman. 1989. Fungi on Plants and Plant Products in the United States. APS PRESS: St. Paul, Minnesota. 1252 pp.

Raabe, Robert D., Ibra L. Conners, and Albert P. Martinez. 1981. Checklist of Plant Diseases in Hawaii. Hawaii Institute of Agriculture and Human Resources, College of Tropical Agriculture and Human Resources, University of Hawaii (Information Text Series 022).

Streets, R.B. 1982. The Diagnosis of Plant Diseases: a field and laboratory manual emphasizing the most practical methods for rapid identification. The University of Arizona Press: Tucson, Arizona.

JUNE 1994

1-OIDIUM

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