白菜型油菜品质好、含油量较高,生育期较短、适合两熟制,在四川省栽培较广。但一般品种抗病毒病力弱,产量很不稳定。据新都1959年报告:白菜型油菜常年因病损失约5—10％,重病田则高达80％以上。根据我们的观察,不同品种问的抗病毒病能力显然有所不同,因此,从1954年就开始了选育抗病毒病品种的工作,现已获得一定结果,育成了白菜型抗病毒品种协作一号及协作二号。 Cabbage-type rapeseed has good quality, high oil content, short growth period, suitable for two-crop system, cultivated in Sichuan Province. However, the general varieties of anti-virus disease is weak, the yield is very unstable. According to the report of Xindu in 1959, the annual loss of cabbage-type rape due to illness is about 5-10%, while that of severe illness is as high as 80% or more. According to our observation, the ability of different varieties to ask for anti-virus diseases obviously varies. Therefore, the work of breeding anti-virus varieties has been started since 1954 and some results have been obtained. It has bred a cabbage-type anti-virus variety Number and collaboration on the 2nd.