Abstract
Abstract A description is provided for Pythium oligandrum . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Ananas comosus, Antirrhinum majus, Beta vulgaris, Brassica oleracea, Carthamus tinctorius, Citrullus vulgaris, Citrus sp., Cucumis sativa, Cucurbita pepo, Daucus carota, Euphorbia pulcherrima, Ipomoea batatas, Lactuca sativa, Lathyrus odoratus, Lycopersicon esculentum, Malus pumila, Papaver rhocas, Persea gratissima, Phaseolus acutifolium, P. vulgaris, Pisum sativum, Prunus amygdalus, Rheum rhaponticum, Stipa sp., Triticum aestivum, Viola tricolor and in soil and compost. DISEASES: Causing damping-off of seedlings, also stem and root rot of a wide range of plants including peas, beans, sweet potato, tomato, rhubarb, sugar beet, sweet peas, pansy and wheat. Also associated with a fruit rot of cucumber and water melon. GEOGRAPHICAL DISTRIBUTION: Africa (South Africa), Asia (Israel); Australasia & Oceania (Australia, Hawaii); Europe (Cyprus, Great Britain, Italy); North America (U.S.A.); South America (Argentina). TRANSMISSION: Soil-borne.
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