Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Soybean Seed Injury by the Bean Bug, Riptortus clavatus (Thunberg) (Hemiptera: Alydidae) at Reproductive Stage of Soybean (Glycine max Linnaeus)

콩 생식생장단계별 톱다리개미허리노린재(Riptortus clavatus)흡즙에 의한 콩 종실 피해

  • Published : 2005.12.30
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Abstract

Soybean seed injury was analyzed in the experiments that soybean pods were allowed to be sucked by adults of the bean bug, R. clavatus, and were picked with a specimen pin. While attack by the bean bug at podding stage of soybean caused the increase of empty pods and completely-undeveloped seeds, attack at full seed stage caused the increase of seeds wi distinct injury mark on seed-coat. The ratio of deformed seed was lower than those of injury-marked seed and undeveloped seed when attacked during all stages. In at full bloom stage hardly produced injury-marked seeds and deformed seeds. When the injured seeds were dyed with acid-fuchsine solution, stylet sheaths of R. clavatus formed on seed-coat were observed in 83% of undeveloped seeds formed under attack during podding stage and in 91% of injury-marked seeds formed during full seed stage. In pods injured with a specimen pin at full seed and full maturity stages, no healthy seeds could be obtained from the pods. And the more picked at full seed stage, the more deformed seeds were produced and the higher weight reduction of injury-marked seed occurred. However, pin-injury at full maturity stage didn't give rise to weight reduction of seeds.

콩 생식생장 단계별로 톱다리개미허리노린재를 접종하거나, 침으로 꼬투리를 치르는 인위적 가해를 통해 콩 종자 피해를 조사하였다. 착협기에 톱다리개미허리노리재 성충을 섭식시켰을 때, 빈 꼬투리와 종자로 전혀 발육하지 못한 판형종자의 생성비율이 종실비대성기에서의 가해보다 높은 것이 관찰되었다. 종실비대성기에 섭식시켰을 때는 종자모양은 거의 정상적이나 종피에 피해흔적이 뚜렷한 종자 수가 유의적으로 증가하였다. 종자모양이 많이 변형되거나 불완전하게 성숙한 기형종자의 비율은 처리 사이에 차이가 없었고 다른 종자형태들에 비해 상대적으로 낮은 비율을 차지하였다 착협시 피해에서 생성된 판 종자의 83%, 종실비대성기에 생성된 피해흔적이 있는 종자의 91%에서 종자 표면 위에 실험곤충의 빨대피막이 관찰되었다. 개화기 섭식은 피해종자 생성에 거의 영향을 주지않았다. 종실비대성기와 성숙기에 침을 이용하여 콩 꼬투리를 찔러 물리적인 가해를 하였을 때, 수확기에 건전한 종자들을 발견할 수 없었고, 피해gms적이 있는 종자의 비율이 기형종자 보다 많았다. 종실비대성기에 침으로 찌른 회수가 많은 경우 판형종자와 기형종자의 비율이 증가하였고, 피해흔적 종자 비율은 상대적으로 감소하였는데 무게감소 비율은 적게 찌른 경우 보다 상대적으로 켰다. 그러나 성숙기 인위적 가해에서는 수확종자의 무게감소가 나타나지 않았다.

Keywords

References

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