中文摘要：在过去的二十年中，菜豆金黄花叶病毒属病害在巴西番茄作物中的重要性增加。巴西主要的管理策略是使用杀虫剂控制介体烟粉虱，但经常失败。文章目的在于研究巴西中部两个加工番茄生产区病害的时空进展。研究结果表明，中心地块和边缘地块症状植物的分布可能是三种传播机制导致的结果：一个初级随机传播和两种聚合（一个真的和一个假的二级传播）。本文还对这些病害差异管理的影响进行了讨论。
外文摘要：Over the last two decades, begomovirus diseases have increased in importance in Brazilian tomato crops. The major management strategy in Brazil is the application of insecticides to control the whitefly vector, but this is often unsuccessful. The objective of this work was to study the spatial and temporal progression of the disease in two processing tomato production areas in Central Brazil. A total of 24 plots (225 plants each) in six fields were evaluated weekly by visual inspection for plants with begomovirus symptoms. The predominant begomovirus in symptomatic tomato plants in all fields was Tomato severe rugose virus, and it was also detected in weeds and other crop plants. No correlation between incidence of begomovirus disease and whitefly population was found. The disease progression was rapid, with a slightly aggregated distribution of symptomatic plants. No relevant differences were observed in the temporal and spatial analyses, although an important difference was detected between plots located at the centre (PC) and the edge (PE) of the fields. In the temporal analysis, the begomovirus incidence and area under disease progress curve values were lower in PC than in PE. In the spatial analysis, plants with begomovirus symptoms were more aggregated in PC than in PE. These results suggest that the distribution of symptomatic plants in PC and PE could be a result of three dissemination mechanisms: one random (primary) and two aggregated, a real secondary spread, and a false secondary spread. The implications of these differences on disease management are discussed.
外文关键词：begomovirus, primary inoculum, tomato, ToSRV
作者：MA Macedo, TM Costa, JC Barbosa, 等
作者单位： Bayer Crop Science Vegetable Seeds
期刊名称：Plant Pathology
期刊影响因子：2.383
出版年份：2017
出版刊次：5
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