中文摘要：温室白粉虱是番茄等许多作物上的重要害虫。许多野生番茄品种对白粉虱表现出更高的抗性。因此，找到这种抗性增强的来源并将其培育到商业番茄品种中，是降低这种虫害对作物影响的重要策略。本文通过比较温室白粉虱在野生醋栗番茄品种上与易感商业番茄品种“Elegance”上的产卵与取食数据，评估了醋栗番茄的抗虫性。并用EPG方法对这些番茄品种的抗性因子进行定位。研究结果表明，野生番茄对温室白粉虱的抗性存在两种模式：一种是渗透后、到达韧皮部前的抗性机制，还有一种是处于韧皮部的抗性因子。本研究结果可运用到将来的育种策略中，以增强商业番茄品种对温室白粉虱的抗性。
外文摘要：The glasshouse whitefly, Trialeurodes vaporariorum, is an important pest of many crop plants including tomato, Solanum lycopersicum. Many wild tomato species exhibit a higher resistance to whiteflies. Therefore, locating the source of this enhanced resistance and breeding it into commercial tomato species is an important strategy to reduce the impact of pests on crops. Here, we assessed the pest resistance of Lycopersicon pimpinellifolium by comparing oviposition and feeding data from T. vaporariorum on this wild tomato species with data collected from a susceptible commercial tomato, S. lycopersicum var. ` Elegance'. The location of resistance factors was examined by use of electrical penetration graph (EPG) studies on these tomato species. Results show that whiteflies preferentially settled on the commercial tomato more often in 80 % of the replicates when given free choice between the two tomato species and laid significantly fewer eggs on L. pimpinellifolium. Whiteflies exhibited a shorter duration of the second feeding bout, reduced pathway phase probing, longer salivation in the phloem and more non-probing activities in the early stages of the EPG on the wild tomato species compared to the commercial tomato. These findings evidence that a dual mode of resistance is present in this wild tomato against T. vaporariorum: a post-penetration, pre-phloem resistance mechanism and a phloem-located factor, which to the best of our knowledge is the first time that evidence for this has been presented. These findings can be used to inform future breeding strategies to increase the resistance of commercial tomato varieties against this important pest.
外文关键词：Trialeurodes vaporariorum；Lycopersicon pimpinellifolium；EPG；Plant-pest interactions；Breeding
作者：McDaniel, Thomas；Tosh, Colin R.；Gatehouse, Angharad M. R.；等
作者单位：Newcastle Univ
期刊名称：AGRONOMY FOR SUSTAINABLE DEVELOPMENT
期刊影响因子：4.141
出版年份：2016
出版刊次：3
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