Inhibitory Effect of Two Insecticides on <i>Tomato yellow leaf curl virus</i> （TYLCV） Transmission by <i>Bemisia tabaci</i> Q-biotype （Hemiptera: Aleyrodidae）

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  • Higuchi Satoshi
    Institute of Agro-environmental Research, Kumamoto Prefectural Agricultural Research Center
  • Furuie Tadashi
    Institute of Agro-environmental Research, Kumamoto Prefectural Agricultural Research Center
  • Goto Chie
    NARO Agricultural Research Center
  • Sakamaki Yositaka
    Entomological Laboratory, Faculty of Agriculture, Kagoshima University
  • Tsuda Katsuo
    Entomological Laboratory, Faculty of Agriculture, Kagoshima University

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  • <i>Tomato yellow leaf curl virus</i>（TYLCV）を保毒したタバココナジラミ（カメムシ目：コナジラミ科）バイオタイプQに対する2種薬剤の感染抑制効果
  • Tomato yellow leaf curl virus (TYLCV)を保毒したタバココナジラミ(カメムシ目:コナジラミ科)バイオタイプQに対する2種薬剤の感染抑制効果
  • Tomato yellow leaf curl virus (TYLCV)オ ホドクシタ タバココナジラミ(カメムシモク:コナジラミカ)バイオタイプ Q ニ タイスル 2シュ ヤクザイ ノ カンセン ヨクセイ コウカ

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Abstract

The whitefly Bemisia tabaci （Gennadius） is an important economic pest, being a vector of Tomato yellow leaf curl virus （TYLCV）. In this study, we evaluated the inhibitory effect of two insecticides on TYLCV transmission by whiteflies. Tomato plants pretreated with pyrifluquinazon or dinotefuran （0 and 7 days before inoculation） were significantly less infected with TYLCV than untreated plants, while plants pretreated 14 day before inoculation did not show any difference. In contrast, the survival rates of viruliferous whitefly on pretreated plants 0, 7, 14 days before inoculation were significantly lower than those on untreated plants. These results indicate that sprays of these insecticides at 7-day intervals were effective in inhibiting the incidence of TYLCV transmission by whiteflies.

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