Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Rice Stripe Virus (RSV) Acquisition and Infection Rates According to Wing Form, Sex and Life Stage of Small Brown Planthopper (Laodelphax striatellus)

애멸구의 날개형태, 성별, 그리고 발육단계별 Rice stripe virus (RSV) 보독률과 이병률

  • Yi, Hwi-Jong (Department of Southern Area Crop Science, NICS, RDA) ;
  • Kang, Mi-Hyeong (Crop Foundation Division, NICS, RDA) ;
  • Choi, Man-Young (Technology Transfer Division, NICS, RDA) ;
  • Koo, Hyun-Na (Department of Plant Medicine, College of Agriculture, Life and Environment Sciences, Chungbuk National University) ;
  • Kim, Gil-Hah (Department of Plant Medicine, College of Agriculture, Life and Environment Sciences, Chungbuk National University)
  • 이휘종 (국립식량과학원 남부작물부 논이용작물과) ;
  • 강미형 (국립식량과학원 기초기반과) ;
  • 최만영 (국립식량과학원 기술지원과) ;
  • 구현나 (충북대학교 농업생명환경대학 식물의학과) ;
  • 김길하 (충북대학교 농업생명환경대학 식물의학과)
  • Received : 2015.10.27
  • Accepted : 2015.11.05
  • Published : 2015.12.01
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Abstract

Small brown planthopper (SBPH), Laodelphax striatellus, gives a lot of damage to the rice by insect vector of rice stripe virus (RSV). This study compared the RSV acquisition and infection rates according to wing form, sex, and life stage of SBPH. The RSV acquisition rate in macropterous and brachypterous was 60.7% and 63.1%, respectively. The RSV acquisition rate by sex was 61.9% in female and 52.2% in male. However, there was no difference in significance. The RSV acquisition rate of nymphs and adults was 51.2% and 58.7%, respectively. The RSV infection rate by wing form was 53.3.% in macropterous and 48.2% in brachypterous. According to life stage, nymphs was 38.2% and adults was 42.6%. There was no difference in significance. On the other hand, female and male of RSV infection rate was 50.5% and 22.3%, respectively. There was a significant difference. Additionally, developmental periods of SBPH by RSV infection, the longest when inoculated with RSV-infected SBPH in healthy rice, while the shortest when inoculated healthy SBPH in healthy rice.

애멸구(Laodelphax striatellus)는 rice stripe virus (RSV)의 매개충으로 벼에 큰 피해를 주는 해충이다. 본 연구에서는 애멸구의 장 단시형, 암 수, 약 성충에 대한 RSV 보독률과 이병률을 비교하였다. 애멸구의 장 단시형의 RSV 보독률은 각각 60.7%, 63.1%로 크게 차이는 없었다. 암 수에 대한 RSV 보독률은 각각 61.9%, 52.2%로 암컷의 보독률이 더 높았으나 유의성은 없었다. 약 성충의 보독률을 비교한 결과 각각 51.2%, 58.7%로 역시 크게 차이가 나지는 않았다. RSV에 감염된 애멸구에 노출된 건전한 벼의 이병률은 장시형은 53.3%, 단시형은 48.2%를 보였으며, 약 성충의 이병률은 각각 38.2%, 42.6%를 보여 유의성은 없었다. 반면 암컷은 50.5%의 이병률을 보이고 수컷은 22.3%의 이병률을 보여 암컷이 수컷에 비해 22.3% 이병률이 높아 유의성이 있었다. 또한 벼와 애멸구의 RSV 감염여부에 의한 애멸구의 발육기간은 건전한 벼에 RSV 감염 애멸구를 접종 했을 때 가장 긴 것으로 나타났으며, 건전한 벼에 건전한 애멸구를 접종 했을 때 발육기간이 가장 짧은 것으로 나타났다.

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