摘要
从病原、发生规律、预测预报、抗病育种和防治等5个方面对我国马铃薯晚疫病的研究进行了综述。目前,我国马铃薯晚疫病菌生理小种的组成仍以1、3、4的不同组合为主;我国已在6个省(区、市)发现了A2交配型。病种薯是马铃薯晚疫病主要的初侵染来源,中心病株的出现是发生的重要标志,6～8月份的降雨是流行的关键因素。培育具有水平抗性的品种是目前抗病育种的重点。为减少瑞毒霉抗性菌株的出现,可将瑞毒霉与瑞毒锰锌、大生和波尔多液等轮换施用。
The pathogen, development, forecast, resistant breeding and control of potato late blight in China are reviewed in this paper.At present, the constitution of physiological race of Phytophthora infestans is also mainly formed by the combinations of 1,3 and 4.A2 mating type has been found in six provinces(autonomous region or municipality).Diseased seed potato is the major preliminary infection source, the appearance of center disease plant is an important sign of occurrence, and the rainfall from June to August is a key factor of epidemics.To breed cultivars with horizontal resistance is stressed in late blight resistance breeding.In order to reduce the metalaxylresistance isolates, we can alternately apply Ridomil with Ridomilmongcin, Dithane or Bordeaux.
出处
《南京农专学报》
2003年第2期46-50,共5页
Journal of Nanjing Agricultural Technology College
关键词
马铃薯
晚疫病
病种薯
抗病育种
病原
发生规律
预测预报
防治措施
potato
Phytophthora infestans
physiological race
A_2 mating type
horizontal resistance
metalaxyl-resistance isolate
