1·Potato late blight caused by Phytophthora infestans is a serious and destructive disease worldwide.
晚疫病菌引起的马铃薯晚疫病是危害全球马铃薯生产的严重病害。
2·Isolates of Phytophthora infestans from tomato which are resistant to metalaxyl have been found in China, the frequency is 8.7%.
我国番茄晚疫病菌中有甲霜灵抗性菌株，抗性频率为8.7%。