一、育种依据黄瓜是我市周年生产的主要蔬菜之一,冬春温室及塑料大棚生产中,有百分之七十以上的面积是栽培黄瓜。它在蔬菜周年供应上起着重要作用。但是由于黄瓜受霜霉、白粉、枯萎等多种病的危害,产量极不稳定。遇有病害流行年份,露地黄瓜每亩只收二、三千斤,塑料大棚黄瓜每亩也只能产五千斤左右,病害严重的地块甚至没有收成,影响菜农收入。如我市郊区的尖山、黑牛城、南 First, the breeding basis Cucumber is one of the main vegetables produced in our city, winter and spring greenhouse and plastic shed production, more than 70 percent of the area is cultivated cucumber. It plays an important role in the annual supply of vegetables. However, due to cucumber by downy mildew, white powder, wilt and other diseases, the output is extremely unstable. In case of epidemics of the year, only half per mu of open cucumbers received, three thousand pounds, plastic cucumbers can only produce about five kilograms per mu, the plot of serious diseases or even no harvest, affecting farmers income. Such as the city’s suburbs Jianshan, Black Bull City, South