目前北京地区番茄病毒病以烟草花叶病毒(TMV)的O株系和 1株系为主。在病重年份强丰等主栽品种仍发病较重,导致减产。所以选育抗病力更强、不易裂果.更加稳产高产的品种成为解决中熟番茄生产的重要任务。经严格地亲本选择、组合比较、多代抗病性鉴定筛选,选育出了中蔬4号和中杂4 At present, tomato virus disease in Beijing is dominated by O strain and one strain of tobacco mosaic virus (TMV). In the heavy years of strong abundance and other cultivars are still heavier incidence of disease, resulting in reduced production. Therefore, breeding more resistant to disease, not easy to crack fruit more stable and high yield varieties become an important task to solve the mid-ripe tomato production. Strict selection by the parents, the combination of comparison, multi-generation disease resistance identification screening, breeding in the vegetable No. 4 and mixed 4