Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Characteristics of Feeding Behavior of the Rice Brown Planthopper, Nilaparvata lugens, Using Electrical Penetration Graph (EPG) Technique on Different Rice Varieties

EPG를 이용한 벼 재배품종별 벼멸구의 섭식행동특성

  • Kim, N.S. (Department of Applied Biology, College of Agriculture & Life Sciences, Chungnam National University) ;
  • Seo, M.J. (Department of Applied Biology, College of Agriculture & Life Sciences, Chungnam National University) ;
  • Youn, Y.N. (Department of Applied Biology, College of Agriculture & Life Sciences, Chungnam National University)
  • 김남성 (충남대학교 농업생명과학대학 용용생물학과) ;
  • 서미자 (충남대학교 농업생명과학대학 용용생물학과) ;
  • 윤영남 (충남대학교 농업생명과학대학 용용생물학과)
  • Published : 2005.09.01
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Abstract

For the comparison of feeding behavior of Nilaparvata lugens among different rice varieties, electrical penetration graph (EPG) technique was used. Ten rice varieties were selected from national-widely recommended rice varieties cultivating in Chungnam province. The correlation between feeding duration and honeydew amount excreted was investigated, and the types of EPG pattern were analyzed among rice varieties. The EPG patterns divided into 6 types according to electrical specific feature, respectively. Type 1 pattern was a searching feeding sites, resting or wandering on a rice plant. Type 2 pattern was appeared when the insect untaken from phloem sieve element. Type 3 pattern was observed when the insect piercing into the rice plant. Type 4 pattern was observed when the insect salivating in rice plant. Type 5 pattern was observed when the insect ingesting from the xylem. Type 6 pattern was observed when the stylet moving in cell. Feeding duration time on Gum-nam was significantly shorter than Dong-jin, Dae-ahn, Dong-ahn, Dae-san. Also, on Gun-nam, it was shown that the brown planthopper did not penetrate the cuticle for a long time. The total number of excreted honeydew droplets by the brown planthopper was the greatest in Dong-jin variety and the least in Gum-nam variety. In proportion to phloem feeding time, the number of honeydew droplets had been increased. According to the results of EPG patterns and honeydew droplets analysis, N. lugens seems to prefer Dong-jin, Dong-ahn, Dae-san, and Dae-ahn to Gum-nam, Da-san, and Nam-chun rice plant variety.

충남지방에서 많이 재배되고 10개의 벼 품종을 대상으로 벼멸구(Nilaparvata lugens)의 섭식행동을 EPG 패턴으로 분석하였다. 또한 벼의 섭식시간과 감로분비량의 관계를 알아보고 측정한 EPG 패턴을 비교분석하였다. 벼멸구의 각 EPG type을 전기적인 특성에 따라 1-6까지의 6가지로 분류하였다. 이중 Type 1은 구침을 꽂지 않고 쉬거나 돌아다닐 때 나타나는 패턴이고 Type 2는 체관을 흡즙할 때 나타나는 패턴이고 Type 3은 처음으로 구침을 꽂을 때, Type 4는 타액 분비시, Type 5는 물관의 흡즙시, Type 6은 구침의 세포내 이동시 나타난다. 벼멸구의 각 품종에 대한 섭식시간은 금남벼에서는 짧은 시간동안 이루어졌고 동전벼, 대안벼, 동안벼, 대산벼에서는 오랜 시간 흡즙을 하였다. 또한 금남벼에서는 장시간 구침을 삽입하지 않는 시간이 길었다. 감로의 분비량은 동진벼에서 가장 많았고 금남벼에서 가장 적은 감로를 분비했다. 이 감로의 분비량은 체관의 흡즙시간과 비례하여 나타났다. EPG type과 감로의 분비량을 분석한 결과 벼멸구가 선호하는 품종은 동진벼, 동안벼, 대산벼, 대안벼 등이었고 그렇지 않은 품종은 금남벼, 다산벼, 남천벼 등이었다.

Keywords

References

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