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Disease Note.

Cucumber Vein Yellowing Virus in Cucurbitaceae in Turkey. M. A. Yilmaz, Department of Plant Protection, Agricultural Faculty, Qukurova University, Adana, Turkey. M. Ozaslan, and D. Ozaslan. Department of Plant Protection, Agricultural Faculty, Qukurova University, Adana, Turkey. Plant Dis. 73:610. Accepted for publication 21 November 1988. Copyright 1989 The American Phytopathological Society. DOI: 10.1094/PD-73-0610A.

Symptoms of vein yellowing, veinclearing, stunting, and yield red uction were observed on Cucumis sativus L. 'Cool Green' and C. melo L. 'Hasanbey.' The causal agent was rarely transmitted to plants by mechanical inoculation but was easily transmitted in a semi persistent manner by Bemisia tabaci Genn. to C. sativus, C. melo, Cucurbita pepo L. 'Sakiz Kabagi,' and Citrullus lanatus L. 'Washington.' Chenopodium quinoa Willd., Datura stramonium L., Gomphrena globosa L., and Turkish tobacco (Nicotiana sp.) did not show any symptoms, and the virus was not recovered from experimentally inoculated plants. Rod-shaped viral particles (76(}--810 X 15-20 nm) were observed in the leaftissue of Cucumis plants by electron microscopy (2). By means of membrane feeding (1), the virus was transmitted by B. tabaci to Cucumis, melon, squash, and watermelon plants. This is the first report of cucumber vein yellowing virus in Turkey.

References: (I1) G. L. Rana et al. Phytopathology 65:1143, 1975. (2) Sela et al. Phytopathology 70:226, 1980.