辣椒疫病是为害辣椒的世界性、毁灭性病害。70年代以来,我国的新疆、甘肃、吉林、北京及江苏等地辣椒疫病逐年加重,造成的损失愈来愈大。以往,我国对辣椒疫病的研究主要在病原鉴定、发生规律及防治方面,对病原菌的侵入活动研究报道不多。1991～1993年,我们对辣椒疫霉游动孢子在不同基因型辣椒根表侵入活动进行了研究。 1 辣椒疫霉游动孢子在不同基因型辣椒根表侵入时间、数量及形态的变化 Pepper blight is a worldwide, devastating disease that damages peppers. Since the 1970s, the epidemic of peppers in Xinjiang, Gansu, Jilin, Beijing and Jiangsu in our country has been increasing year by year, causing more and more losses. In the past, the research on pepper blight in our country mainly included the identification of pathogen, the regularity of occurrence and prevention and cure, and few reports on the invasion of pathogen. From 1991 to 1993, we studied the invasion activity of Phytophthora capsici at the root surface of different genotypes of pepper. 1 Change of Time, Quantity and Morphology of Phytophthora capsici invaded by Different Genotypes of Pepper Root Table