Effects of Latent Infection of Stock Plants and Abundance of Thrips on the Occurrence of <Emphasis Type="Italic">Tomato spotted wilt virus </Emphasis>in Chrysanthemum Fields |
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| Authors: | Shohei MATSUURA Shigeru HOSHINO Hideaki HAYASHI Tetsuyuki KOHGUCHI Kyoji HAGIWARA Toshihiro OMURA |
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| Institution: | (1) Virology Laboratory, National Agricultural Research Center, Tsukuba 305–8666, Japan, JP;(2) Environmental Research Division, Hiroshima Prefectural Agriculture Research Center, Higashihiroshima 739-0151, Japan, JP |
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| Abstract: | DAS-ELISA proved to be reliable enough to detect a latent infection by Tomato spotted wilt virus (TSWV) in asymptomatic stock plants of chrysanthemum. A high density of Frankliniella occidentalis, the predominant vector, in the presence of latently infected stock plants resulted in a high incidence of disease in the chrysanthemum
production field. The incidence of disease was low when the vector thrips were not abundant in spite of the presence of latently
infected stock plants. These results suggest that an infestation of the vector thrips causes severe secondary spread of TSWV
originating from latently infected stock plants in chrysanthemum production fields.
Received 27 July 2001/ Accepted in revised form 27 November 2001 |
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| Keywords: | : Tomato spotted wilt virus chrysanthemum Frankliniella occidentalis latent infection |
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