中文摘要：在大多数亚洲地区水稻上会同时发生褐飞虱和白背飞虱。褐飞虱被认为是极具破坏性的水稻害虫。两种害虫在水稻植株上的交互作用可能是积极的（种间促进）或是负面的（种间竞争）。然而，它们在抗性水稻品种上的交互作用结果很少受到关注，尽管它们可能会适应水稻抗性。本文研究了两种害虫的若虫在抗性水稻（IR62 和ADR52）和易感水稻（IR22）上的交互作用。初步研究结果表明：来自白背飞虱的竞争可能会使褐飞虱对抗性水稻的适应性变慢。褐飞虱对白背飞虱在抗性水稻上的促进作用可能取决于对两种飞虱抗性的相对优势，这种促进作用有望能提高白背飞虱的适应速率。
外文摘要：The planthoppers Nilaparvata lugens (StAyenl) and Sogatella furcifera (Horvath) co-occur on rice Oryza sativa L., throughout much of Asia. Nilaparvata lugens is regarded as the more destructive rice pest. Interactions between these two species on individual rice plants can be positive (interspecific facilitation) or negative (interspecific competition). However, the outcome of their interactions on resistant rice varieties has received little attention despite the potential consequences for adaptation to resistance. In this study, we examine interactions between nymphs of these two species on resistant (IR62 and ADR52) and susceptible (IR22) rice varieties. IR62 was resistant to N. lugens at all plant ages, but only older plants were resistant to S. furcifera. ADR52 was resistant to S. furcifera, and gained moderate resistance to N. lugens as the plants aged. Nilaparvata lugens facilitated weight gain in S. furcifera even on the resistant IR62 variety. However, facilitation by N. lugens was reduced on older ADR52 plants when resistance against S. furcifera was strongest. Sogatella furcifera reduced weight gain in N. lugens on susceptible varieties, but failed to out-compete N. lugens where plants expressed S. furcifera-resistance. Our preliminary results indicate that competition from S. furcifera could slow adaptation by N. lugens to resistant rice varieties. Facilitation by N. lugens of S. furcifera on resistant rice, which is expected to increase adaptation rates in the latter species, likely depends on the relative strengths of resistance against both planthoppers.
作者：Srinivasan, Thanga Suja；Almazan, Maria Liberty P.；Bernal, Carmencita C.；等
作者单位：国际水稻研究所
期刊名称：APPLIED ENTOMOLOGY AND ZOOLOGY
期刊影响因子：1.102
出版年份：2016
出版刊次：2
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