黄瓜霜霉病是发生极为普遍的病害,无论保护地或露地均有发生,如遇适合的流行条件可造成严重减产,造成很大损失。为了防治该病害,通常采用药剂防治措施,虽然起到了一定的防效,但也给黄瓜果实积累了一定的残毒。为了给人们提供低毒或无公害蔬菜,选用抗病品种是最为根本有效的措施。近年来为了选育抗病品种,在人 Cucumber downy mildew is a very common disease that occurs both in the protected area and in the open field. In case of suitable epidemic conditions, it may cause serious yield loss and cause great losses. In order to control the disease, usually using chemical control measures, although played a certain control effect, but also to the cucumber fruit has accumulated a certain residual drug. In order to provide people with low-toxic or pollution-free vegetables, the selection of resistant varieties is the most fundamental and effective measures. In recent years in order to breed resistant varieties, in people