During a field survey in 1994, five cucumber (Cucumis sativus) cv. Hokushin plants showing symptom of yellowing, mottling, and vein banding on the leaves were collected from a commercial field of the Federal District. By electron microscopy, quasi-spherical particles with double membrane, typical
The chrysanthemum (Dendranthema grandiflorum), whose planted area comprises more than 6,000 ha in Japan, is one of the most important ornamental cut flower crops. In August 2006, necrotic streaks on stems, chlorotic and necrotic spots and rings on leaves, and leaf distortions were observed on
Summer-to-autumn flowering chrysanthemums (Dendranthema grandiflora Tzvelev. cv.) are grown outdoors in containers and are characterised by a uniform ball-shaped growth habit. Development of new cultivars expanded the production of marketable plants from end of July until end of October. During the
Paris daisy (Argyranthemum frutescens) is an economically important crop on the Riviera Ligure (Northern Italy), where approximately 10 million plants per year are produced for export. In September 1997, a serious wilt of plants (cv. Camilla) grown in plastic pots (14 to 18 cm in diameter) was
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