番茄晚疫病是番茄上重要病害之一，局部地区发生。番茄晚疫病保护地、露地均可发生，但主要危害保护地番茄。连续阴雨天气多的年份危害严重。发病严重时造成茎部腐烂、植株萎蔫和果实变褐色，影响产量。
Tomato late blight disease is a worldwide fatal disease for vegetable production,often break out, and cause great crop loss.
番茄晚疫病是一种毁灭性的世界蔬菜病害，易暴发成灾，给番茄生产带来巨大损失。
参考来源 - 番茄晚疫病抗性遗传分析Late blight of tomato is a cosmopolitan disease. It causes a significant yield losses and quality,degradation especially in spring tomato area.
番茄晚疫病是一种世界性病害,也是我国番茄产区的主要病害之一。
参考来源 - 番茄晚疫病抗性QTL分析·2,447,543篇论文数据，部分数据来源于NoteExpress
我国番茄晚疫病菌中有甲霜灵抗性菌株，抗性频率为8.7%。
Isolates of Phytophthora infestans from tomato which are resistant to metalaxyl have been found in China, the frequency is 8.7%.
为了使马铃薯抗晚疫病基因RB能够在番茄育种和生产中应用，构建了RB无选择标记载体。
We construct a marker-free vector of RB gene in order to apply with RB in the tomato late blight breeding and production.
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