Department of Entomology, Kansas State University, Manhattan, KS 66506, USA.
J Econ Entomol. 2012 Dec;105(6):2180-6. doi: 10.1603/ec12252.
The wheat curl mite, Aceria tosichella Keifer, is an important pest in the western plains of the United States as well as in most major wheat-growing regions of the world. This mite is a vector of the economically important diseases wheat streak mosaic virus (WSMV), Triticum mosaic virus (TriMV), and High Plains virus (HPV). This study looked at seven accessions of Aegilops tauschii (Coss) Schmal to determine if they exhibit antibiosis, tolerance, and/or antixenosis to the wheat curl mite using 'Jagger', a known wheat curl mite-susceptible variety, and OK05312, a known wheat curl mite-resistant variety, as controls. Four of the seven tested accessions showed antibiotic effects on the population growth of wheat curl mite, as demonstrated by low number of wheat curl mite adults and nymphs at the end of the experiment. Three accessions and the commercial wheat variety Jagger showed some level of tolerance to wheat curl mite infestations, as demonstrated by a significantly reduced percentage proportional tissue dry weight and by tolerance index values. Four accessions demonstrated a strong antixenotic effect on the wheat curl mite, as demonstrated by significantly reduced numbers of mite adults at the end of the experiment. This study also established an effective method for determining antixenosis to the wheat curl mite in wheat that can be used for future experiments. All accessions demonstrated at least one type of plant resistance that could provide a genetic source for control of the wheat curl mite that may have the potential to be transferred into commercial wheat varieties.
小麦卷叶螨，Aceria tosichella Keifer，是美国西部平原以及世界上大多数主要小麦种植区的重要害虫。这种螨虫是经济上重要的疾病小麦条纹花叶病毒（WSMV）、小麦 mosaic 病毒（TriMV）和高平原病毒（HPV）的载体。本研究观察了七个 Aegilops tauschii（Coss）Schmal 品系，以确定它们对小麦卷叶螨是否表现出抗生性、耐受性和/或抗生性，使用“Jagger”（一种已知的小麦卷叶螨易感品种）和 OK05312（一种已知的小麦卷叶螨抗性品种）作为对照。在测试的七个品系中，有四个品系表现出对小麦卷叶螨种群生长的抗生素作用，表现为实验结束时小麦卷叶螨成虫和若虫数量较少。三个品系和商业小麦品种 Jagger 表现出对小麦卷叶螨侵染的一定程度的耐受性，这表现为组织干重比例的显著降低和耐量指数值。四个品系对小麦卷叶螨表现出强烈的抗生性，表现为实验结束时螨的成虫数量明显减少。本研究还建立了一种在小麦中确定对小麦卷叶螨抗生性的有效方法，可用于未来的实验。所有品系都表现出至少一种植物抗性，这可为控制小麦卷叶螨提供遗传来源，这种方法可能具有被转移到商业小麦品种的潜力。
