ABSTRACT
Cucumber is one of the popular vegetable crops in America, Asia, and European countries. It suffers from viral diseases such as cucumber mosaic virus (CMV), zucchini yellow mosaic virus (ZYMV), and watermelon mosaic virus (WMV), which cause serious damage to both the plant body and the fruit yield. However, in many cases, new cucumber cultivars with the characteristics of viral resistance cannot be easily produced, as a result of the absence of useful plants with the characteristics of viral resistance for breeding purposes. If there is a wild plant with the characteristics of viral resistance, such a wild plant cannot be directly used for cucumber breeding, because of genetic barriers such as sexual incompatibility between donor and acceptor plants or the loss of desirable characteristics by breeding.
