导言辣椒疫病是巴西最重大的辣椒真菌病害,特别是在高温高湿条件下往往造成毁灭性的损失。巴西大多数的辣椒栽培种和杂交种都对疫病易感,因此选育抗疫病品种已是巴西辣椒育种的主要目标。其中利用抗性品种是最有效的一种手段(Fernandez,1988;Bosland,Lindsey,1991)。化学防治当 Introduction Phytophthora capsici is the most important chili fungal disease in Brazil, often causing devastating losses under conditions of high temperature and humidity. The majority of pepper cultivars and hybrids in Brazil are susceptible to the disease, so the selection of resistant varieties has been the main target of Brazilian pepper breeding. Among them, the use of resistant varieties is the most effective means (Fernandez, 1988; Bosland, Lindsey, 1991). Chemical control when